FN:s tredje Världskonferens om de Minst Utvecklade Länderna (MUL III) i Bryssel 14 - 20 maj 2001
In: Konferensrapport FN
In: Aktstycken / Utrikesdepartementet
In: N.S. 2 56
In: Konferensrapport FN
In: Aktstycken / Utrikesdepartementet
In: N.S. 2 56
In: Statsvetenskaplig tidskrift, Band 113, Heft 4, S. 393-398
ISSN: 0039-0747
The purpose of this document is the following investigation: Political scientists who study environmental issues face major challenges. One is that much future research needs to be developed -- for example, that we may help to better determine and predict the conditions for developing countries and future generations for living a decent life -- in close collaboration with other natural sciences. The thesis postulates that such cross-faculty interdisciplinary research is challenging and will shift our methodological and epistemological bounds. One consequence of this may be that some of our discipline's more well-rehearsed truths about what constitutes good science -- for example, questions about a scientific problem is, whether to research results that can serve as a guide for policy makers, the explanations of historical processes are preferable to forward-looking issues and that we would be better to work with well-defined cases and data than try to give us the and explore large systems (theories) -- can be questioned. Adapted from the source document.
In: Swiss political science review: SPSR = Schweizerische Zeitschrift für Politikwissenschaft : SZPW = Revue suisse de science politique : RSSP, Band 17, Heft 1, S. 51-74
ISSN: 1662-6370
Abstract: Der Aufsatz beschäftigt sich vorwiegend aus einer theoretischen Perspektive mit Korruption als einer bestimmten Form von Devianz in Kleinstaaten, insbesondere Mikrostaaten: Weisen sie Besonderheiten im Hinblick auf Korruptionsanfälligkeit, das Kosten‐Nutzen‐Verhältnis von Korruption sowie die Korruptionsbekämpfung auf? Zunächst wird eine grobe Kosten‐Nutzen‐Analyse für Kleinstaaten im Hinblick auf Korruption skizziert. Es folgt ein Versuch, darüber hinausgehend strukturelle korruptionserhöhende oder korruptionsreduzierende Einflussfaktoren für das Korruptionsniveau in kleinen politischen Systemen zu benennen. Daraufhin wird anhand eines Stufenmodells diskutiert, wann und gegebenenfalls in welcher Weise Kleinstaaten aktiv Korruptionsbekämpfung betreiben. Einige der in den verschiedenen Abschnitten entwickelten Überlegungen werden am Beispiel Liechtensteins punktuell veranschaulicht. Der Beitrag versteht sich als theoretische Vorstudie für weiterführende empirische Analysen.
Climate changes point to the needs to find sustainable materials for residential multistorey housing as a growing proportion of populations across the world live in urban areas. Despite positive environmental effects, wood has a limited use in multistorey constructions even in countries with a strong tradition to use wood in residential housing, such as Sweden. As new materials, techniques were developed and studies of properties of wood as a construction material were communicated, and legislation was altered in Sweden in the mid-1990s, allowing for the use of wood in multistorey housing. The expected market growth was slow and uneven even when incentivizing programs were developed. This chapter explains consumer perspectives in a town, Växjö, where the tradition of using wood in multistorey construction is strong. It points to the needs of knowing more about consumers' perspectives—in order to communicate added values, that is, environmental benefits, in suitable market channels.
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A special regulatory regime applies to products of recombinant nucleic acid modifications. A ruling from the European Court of Justice has interpreted this regulatory regime in a way that it also applies to emerging mutagenesis techniques. Elsewhere regulatory progress is also ongoing. In 2015, Argentina launched a regulatory framework, followed by Chile in 2017 and recently Brazil and Colombia. In March 2018, the USDA announced that it will not regulate genome-edited plants differently if they could have also been developed through traditional breeding. Canada has an altogether different approach with their Plants with Novel Traits regulations. Australia is currently reviewing its Gene Technology Act. This article illustrates the deviation of the European Union's (EU's) approach from the one of most of the other countries studied here. Whereas the EU does not implement a case-by-case approach, this approach is taken by several other jurisdictions. Also, the EU court ruling adheres to a process-based approach while most other countries have a stronger emphasis on the regulation of the resulting product. It is concluded that, unless a functioning identity preservation system for products of directed mutagenesis can be established, the deviation results in a risk of asynchronous approvals and disruptions in international trade.
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This study investigates the contribution of forest carbon sequestration to a cost-efficient EU climate policy from 2010 to 2050 under conditions of uncertainty. We note that there is a trade-off between sequestration and alternative uses of forests such as bioenergy and timber production. A dynamic and probabilistic cost-minimization model is developed, which includes fossil fuel use within the EU Emissions Trading System and forest management in the EU-27 countries. The results suggest that if policy makers wish to meet emissions targets with 80% certainty, this goal will be eight times more expensive than when they were unconcerned with uncertainty. Policy makers' risk attitudes affect forest management strategy primarily through the inclusion of wood products, where potential carbon emissions reductions are high but also highly uncertain. Excluding wood products from a climate strategy can be expensive if policy maker are insensitive to uncertainty.
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In: Statsvetenskaplig tidskrift, Band 113, Heft 2, S. 209-227
ISSN: 0039-0747
Theoretically, gender research deals with two discourses, sameness/difference and power. I argue against male critics who flatly deny that there can be a power relation between the sexes or critizise it as a holistic concept without much connection with reality. Within gender research, I criticize the postmodernistist thought that all apparent realities are social constructs. In queer theory the identities of individuals as men and women are purely social constructs to be dissolved. In that way one can avoid the power question altogether: no political groups exist, only individuals. A political theory dealing with the relationship between the sexes has yet to be developed. Formal equality is a first step, the difficult question is how to deal with power, the preferential interpretation of the dominant group of what is important and valuable in society. The division in a public and a private sphere is inadequately dealing with family as an institution. Are women in countries where the state is minimal, where they marry very young and have thirteen children, "free"? Adapted from the source document.
This thesis is about Environmental Impact Assessment (EIA) practice in Sweden. Impact Assessment (IA) is expected to play a crucial role in enabling democratic and enlightened decision making. EIA practice seems however not to be in accordance with best IA practice norms and legislation in many countries. We therefore need a more thorough understanding of IA practice and its outcomes and about what is gained through EIA and thus also be able to suggest, on a more profound basis, how the practice can be improved. This thesis presents an analysis of the two cases EIA practice on cumulative effects and the final disposal for spent nuclear fuel. The methods and approaches used are qualitatively and include literature review, document analysis, individual interviews and focus group interviews. The results were analysed using social psychology theory and community of practice theory. The case of cumulative effects clearly demonstrated that a positive attitude towards including cumulative effects was in place, but the conditions to change the knowledge base were not. In the investigated case for a final disposal for spent nuclear fuel it was revealed that a shared practice and social learning over time might result in difficulties for the authority in mapping out a clear role and identity for itself in relation to the proponent. It also showed that the shared practice that has developed between the industry, and the competent authorities, has over time resulted in the adoption of a shared understanding and similar perspectives, concerning at least two points. The first concerns downgrading the need to more thoroughly investigate alternate technical methods to the main alternative, while the second concerns the need to avoid delays in the planning process. Communication and the shared practice that has developed over a long period of time, can have a significant and not necessarily positive impact on power relations and thus hamper knowledge production, diffusion of roles and identities.
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This document summarises the outcome of a regional training workshop, "Interactive and dynamic approaches on forest and land use planning in Southern Africa". It was organised in December 2001 by the government of Botswana in cooperation with organisations in Zimbabwe and South Africa and with Swedish financial and technical support. The workshop aimed at exposing the participants to new cross sector approaches on strategic forest and land use planning, including the Area Production Model (APM) and concept, and to provide a platform for possible future development work in this field. It concerned such issues as the role of planning in relation to policies and local development, information and data needs in planning, the use of scenario modelling in land use planning, how to narrow the gap between "planning from above" and "planning from below", and the roles and interaction of different stakeholders in the planning process. The workshop had been proposed by the participating countries following an international training programme on policy and strategy development in Sweden. The 18 participants from three countries included central and local government staff concerned with forest and land use planning at the national and sub-national level, researchers and NGOs. The workshop consisted of two weeks of lectures, seminars and field based case studies and a concluding seminar, in which the participants presented their experiences and conclusions about the APM concept to a broader group of decision makers. Some of the main conclusions drawn by the participants were that the APM was a useful tool for promoting dynamic and multi-sector planning. At the same time the Model has a number of technical shortcomings that needs to be addressed. Those shortcomings were identified and discussed throughout the workshop. The need to keep the model simple and transparent was acknowledged. It was proposed that "homes" should be identified for the model in each country. Those homes should build up and maintain capacity to develop and adapt the model to the local conditions and priorities. INTRODUCTION. The workshop "Interactive and dynamic approaches on forest and land-use planning in Southern Africa" was arranged in Botswana in December 2001. It aimed at exposing the participants to new cross sector approaches on strategic forest and land use planning, including the Area Production Model (APM), and to provide a platform for possible future development work in this field. The workshop was the concluding step of a process that had been running for several years. It provides important lessons on approaches to cross-sectoral land use planning in Southern Africa. The process started in 1998, when there were several participants from Botswana, South Africa and Zimbabwe in an annual international course "Development of National Forest Policies and Strategies", organised by the Swedish National Board of Forestry and funded by Sida. Those participants strongly suggested that the Area Production Model, (APM), which had been demonstrated during the course, might be highly relevant in Southern Africa. As a response, the Country Capacity Building (CCB) project (a Sida funded project aiming at forest policy issues), set up a training programme in discussions with the three countries. As a first step, key personnel from the forest authorities in Botswana, South Africa and Zimbabwe, underwent a post graduate course at the Swedish University of Agricultural Sciences (SLU) in Umea, Sweden. The course took place in March 2000 and was focused on the ideas and applications of the APM. In a second step, a workshop designated for a wider audience, including governmental as well as non governmental organisations, was planned for mid 2000. The workshop was originally intended to be a two-phase arrangement. The first phase to be arranged in Zimbabwe, focusing on model theory with only limited field work, and a second phase, were the participants would split up and work a realistic case in a designated study area in each of the three countries involved. Unfortunately, the political situation in Zimbabwe during spring 2000 made it necessary to postpone the workshop. About a year later, in spring 2001, it was agreed among the interested countries to move it to another country in the Region, after the Ministry of Agriculture, Botswana, had generously accepted to host the workshop. The two-phase design of the workshop was by now reduced to a single event, with the joint study-area around Serowe in the eastern part of Botswana. The APM is a simulation model developed by Professor Nils-Erik Nilsson in co-operation with FAO. The Model, including an application concept, has been further developed by the Swedish University of Agricultural Sciences (SLU), Department of Forest Resource Management and Geomatics. The Swedish team of resource persons in the Botswana workshop have all been instrumental in the previous development work of the Model. The APM has been field tested on numerous occasions in South and Southeast Asia. This workshop, however, is the first occasion the model is used in Southern Africa. In spite of the simplicity and flexibility that characterises the model, the new setting was considered a major challenge when planning the workshop. The workshop results have given new and partly unexpected results in terms of both usefulness and applicability of the model. The Country Capacity Building project focuses on forest policy development. In modem terminology, nfp (national forest programmes) is a highly relevant term. Key strategies include support to demand driven processes, investment in human knowledge and, not least, a belief that personal commitment is as important for success as political commitments. On behalf of the organisers, I would like to thank the Ministry of Agriculture, Botswana, and the key persons from Botswana, South Africa and Zimbabwe. Without their commitment and enthusiasm, the positive outcome of the workshop would not have been possible.
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Antimicrobial resistance (AMR) is one of the biggest threats against public health in the world. Antimicrobial substances are used within all different sectors and contribute to development of AMR. Global action against irresponsible use of antibiotics and further development of AMR has been of great concern in the last years and risk factors are being pointed out. Low- and middle-income countries (LMICs) have a precarious role in the matter. Insufficient health care systems, poor law enforcement and, high accessibility of over-the-counter drugs (OTCs) are contributing to the unregulated use of antibiotics. Poorly developed surveillance programmes make it hard to correctly analyse the situation of both antimicrobial use (AMU) and AMR. Bangladesh, like its neighbouring countries, faces a lot of challenges regarding public health. One of the major concerns related to public health is access to safe food. Food products can be contaminated with toxins, chemical substances, and microbial organisms, including AMR-bacteria. Furthermore, national programmes for surveillance of AMU and AMR are inadequate. In this study, data from previously done field studies by Bangladesh Livestock Research Institute (BLRI), Bangladesh Food Safety Authority (BFSA), International Livestock Research Institute (ILRI), and International Food Policy Research Institute (IFPRI) and newly collected information from interviews were put together to analyse the AMR situation in Bangladesh. Sampling of food products (tomato, chicken, fish) from traditional markets and supermarkets was done at three locations representing rural, peri-urban, and urban areas from November 2018 to June 2019. Samples were tested for prevalence of Salmonella spp, Escherichia coli, Vibrio cholerae. Samples positive for bacteria were tested for antimicrobial susceptibility through disc diffusion test. As a supplement to the analysis of samples, questionnaires to the vendors of the food products were made to provide background information. During 2020, statistical analysis of previously collected data and interviews with stakeholders working with AMR was made. The interviews aimed to serve as baseline information about current conditions regarding AMU and AMR. 320 cultivations of 1589 (20.1%) were positive for bacterial prevalence. 319 of these were tested for antimicrobial susceptibility where 203 (63.6%) were found to be multidrug-resistant (MDR) (resistant to three or more antibiotic groups). Furthermore, interviews with stakeholders stated that surveillance of AMU and AMR in Bangladesh is inadequate, especially within the animal and agriculture sector, and that a one health approach on a government level is needed to improve the situation. To be able to fully analyse the AMR situation in Bangladesh, a nation-wide study would need to be conducted, within all sectors, including both AMU and AMR testing.
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The policy term green infrastructure highlights the need to maintain functional ecosystems as a foundation for sustainable societies. Because forests are the main natural ecosystems in Europe, it is crucial to understand the extent to which forest landscape management delivers functional green infrastructures. We used the steep west-east gradient in forest landscape history, land ownership, and political culture within northern Europe's Baltic Sea Region to assess regional profiles of benefits delivered by forest landscapes. The aim was to support policy-makers and planners with evidence-based knowledge about the current conditions for effective wood production and biodiversity conservation. We developed and modeled four regional-level indicators for sustained yield wood production and four for biodiversity conservation using public spatial data. The western case study regions in Sweden and Latvia had high forest management intensity with balanced forest losses and gains which was spatially correlated, thus indicating an even stand age class distribution at the local scale and therefore long-term sustained yields. In contrast, the eastern case study regions in Belarus and Russia showed spatial segregation of areas with forest losses and gains. Regarding biodiversity conservation indicators, the west-east gradient was reversed. In the Russian, Belarusian, and Latvian case study regions, tree species composition was more natural than in Sweden, and the size of contiguous areas without forest loss was larger. In all four case study regions, 54-85% of the total land base consisted of forest cover, which is above critical fragmentation thresholds for forest landscape fragmentation. The results show that green infrastructures for wood production and biodiversity conservation are inversely related among the four case study regions, and thus rival. While restoration for biodiversity conservation is needed in the west, intensified use of wood and biomass is possible in the east. However, a cautious approach should be applied because intensification of wood production threatens biodiversity. We discuss the barriers and bridges for spatial planning in countries with different types of land ownership and political cultures and stress the need for a landscape approach based on evidence-based collaborative learning processes that include both different academic disciplines and stakeholders that represent different sectors and levels of governance.
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Biodiversity loss can degrade ecosystems and impactthe ability of ecosystems to contribute to people. The last 20 years of ecosystem service research has increased society's interest in fighting the consequences of ecosystem degradation. During the last decades, attitudes towards conservation have been shaped in many ways. According to Mace (2014), "nature for itself" was a key principle during 1960s–1970s supporting concepts such as protected and wilderness areas. Human pressures on nature during the 1980s and early 1990s resulted in extinctions, habitat loss, and pollution, which made it urgent to act for"nature despite of people". That period was followed by a "nature for people" period, in which biodiversity challenges were mainstreamed via concepts such as ecosystem approach, ecosystem services and economic values. The latest paradigm, which was developed by Mace (2014) is called "people and nature". Key concepts in conservation circles include environmental change, resilience, adaptability and socio-ecological systems. Several assessments of the state and trends of biodiversity, ecosystems and ecosystem services have been carried out via various initiatives, such as Millennium Ecosystem Assessment (MA, 2005), followed by the Economics of Ecosystems and Biodiversity (TEEB) assessments and the Aichi biodiversity targets of the Convention on Biological Diversity (CBD). In Europe, Mapping and Assessment of Ecosystems and their Services (MAES) has generated a lot of new knowledge on the quantification of ecosystem services and use of this information in decision-making. Today, more and more open data is available through research infrastructures, for example, remote sensing data through the Copernicus programme of the European Union and European Space Agency. Naturebased solutions and green and blue infrastructure are becoming popular in landscape planning and highlight different aspects of the socio-ecological (synon. coupled human-environment) systems and their sustainable management. The most significant attempt to highlight the importance of biodiversity and ecosystem services globally, has been the establishment of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES). IPBES has launched a series of thematic and geographical assessments. The European and Central Asian regional assessment has been ongoing parallel to this Nordic IPBES-like assessment that has focused on coastal ecosystems and their services. This assessment covers the Nordic countries, i.e. Denmark, Finland, Iceland, Norway and Sweden, and autonomous areas such as Åland, Faroe Islands and Greenland, which are a unique "biocultural" piece of Earth with unique nature values and well-established societies.
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In this literature review, measures of reducing the ammonia (NH3) emissions from pig production are described, with focus on systems that can be used under Swedish conditions. The entire production chain with feed, housing, manure storage and application on the field is described and taken into consideration. However, in order to limit the study, the production of crops for feed is not included. As compared to many other countries, emissions of NH3 in Swedish pig production are already low, due to low protein levels in the feed, housing systems with a small excretory area, and storage of slurry outside the building. Lowering the crude protein level from 14.5 % to 12.5 % would reduce NH3 emission by 20 % from the pig house. Including fiber in the feed, leads to a shift from nitrogen in the urine towards more nitrogen in the faeces. In combination with removing the manure daily from the pig house, this might give opportunities for reducing NH3 emissions. A reduction in NH3 emission of up to 50 % might be possible. However, using fiber leads to higher methane (CH4) emissions (from animal and housing), and therefore this should be combined with biogas production. More research is needed in this field. Adding acids or salts to the feed could reduce NH3 emission by up to 40 %, while also improving feed conversion efficiency. Of course, good practice when preparing the feed must be followed. By applying multi-phase feeding and feeding according to the sex of the animals, NH3 emissions could be reduced by 5-15 %. By reducing feed spillage, offering a good environment for the pigs and maintaining good pig health, nitrogen losses could also be reduced with about 5 – 15 %. The importance of having clean pens is also discussed in this literature survey. Swedish housing systems, having a relatively high percentage of solid flooring (with some bedding) and a small excretory area in the pen, provides an opportunity for reducing NH3 emissions from the housing system. However, one prerequisite for this is that the pigs keep the pens clean, and therefore the room temperature should not be too high. This means that during hot periods, the air has to be conditioned before entering the pig house, e.g., by taking in the air via channels under the building. Removing manure daily by means of scrapers (reduction up to 40 %) and cooling the manure under the slats (reduction up to 50 %) are measures that are already implemented in Swedish pig production. The effect of air temperature, air flow and ventilation system are also discussed. Cleaning the exhaust air using bio-filters (up to 65 % reduction), bio-scrubbers (up to 70 % reduction) and chemical scrubbers (up to 96 % reduction) is also an option. By only purifying the exhaust air from the manure channels, the costs for this method can be reduced substantially. The emissions of CH4 and nitrous oxide (N2O) from the housing system are also discussed. Removal of the manure under the slats appears to reduce CH4 emission from the building. The use of deep-litter bedding may in many cases result in high N2O emissions. More research is needed in this field. Treating the manure with sulphuric acid, in combination with aeration and re-circulation in the pig house, can reduce NH3 emissions by up to 70 %. Pumping slurry between different compartments in a pig house is not allowed according to the Swedish Welfare Legislation. Therefore it is not certain that the acidification of slurry, inside the pig house, can be applied in Sweden. Anaerobic treatment of biogas production, as another treatment of manure, may not reduce NH3 emissions when storing and spreading the manure, but it results in increasing the nitrogen availability for the crops. In that way nitrogen losses can be reduced since less nitrogen has to be spread per hectare. Besides, biogas production reduces odour problems as well as emissions of green house gas (GHG) by the production of energy and lower CH4 emissions. Aerobic treatment of manure, can reduce the emissions of NH3 and GHG. However, poorly controlled aeration processes can have the opposite effect. Storage of slurry in a tank having a cover lid has been pointed out in many investigations, to be the easiest and most effective way of reducing NH3 and CH4 emissions. The straw used for fattening pigs is mainly consumed by the pigs, and it is rare that a naturally stable crust will be developed on the slurry. However, within piglet production a crust on the slurry tank is often found. This crust can cause problems when the slurry tank is covered. Technical solutions have to be developed to solve this problem. On pig farms, the main crops are cereals, and the slurry is mainly applied either in the spring during tillage work, or band spread in the early summer on growing cereals. Incorporation of the slurry, e.g., by harrowing in the spring, effectively reduces the NH3 losses if it takes place as soon as possible after spreading, preferably directly or at least within 4 hours after spreading. Another possibility is to band spread the slurry onto the growing cereals because the canopy provides a microclimate which reduces the NH3 losses, as compared to spreading on a bare field. Late application during the vegetation period or spreading before the autumn sowing, often results in lower nitrogen utilization by the plants, and thereby higher risks of nitrogen leakage. Due to interactions between different sources on a farm, reduction in NH3 emission from the individual sections of the livestock production system cannot be simply added to give the net reduction in emission from the total system. Thus a whole farm system approach is needed for devising control strategies for reducing NH3 emission. Four scenarios were evaluated in this report. Scenario 1 consists of: Reduction of the crude protein in the feed from 14.5 % to 12.5 %, relatively simple technique inside the pig house to reduce NH3 emission, covering the slurry tank and new technique when spreading manure. Scenario 2 consists of: Using biproducts from industry (16.5 % crude protein instead of 14.5 %) and cleaning of exhausting air, covering the slurry tank and new technique when spreading manure. Scenario 3 comprises conditions similar to those of Scenario 1, including high dietary feed fiber content in combination with biogas production. Scenario 4 comprises conditions similar to those of Scenario 2, including high dietary feed fiber content and in combination with biogas production. Preliminary calculations indicate that the scenarios may reduce emissions by 47-68 %. It should be pointed out that the calculations are still very uncertain. The calculations show that Scenario 3 appears to be the most effective way of reducing NH3 emissions. So the combination of using low protein feed with high fiber content together with the production of biogas appears to be a promising method for future development. Even Scenario 1, which used only simple techniques, has a significant result: lowering the protein content affects the entire chain from feed to the field. From the literature review, it can be concluded that one should consider whole farm systems when trying to reduce NH3 emissions. Having a roof on the manure storage, using band spreading together with incorporation, e.g. harrowing, within a few hours after spreading, are the most important and easiest ways of reducing NH3losses. When discussing the method of animal keeping, feeding and housing, a low protein level in the feed has a positive effect along the entire production chain, and appears to be the most effective means of reducing NH3 emissions. Using more fiber or acids/salts in the feed will reduce the NH3 emission even more. When biproducts from industry are used in the pig feed, cleaning the exhausting air from the manure channel may be an option. More research is needed before recommendations can be given.
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The global growth in energy demand continues, but the way of meeting rising energy needs is not sustainable. The use of biomass energy is a widely accepted strategy towards sustainable development that sees the fastest rate with the most of increase in power generation followed by strong rises in the consumption of biofuels for transport. Agriculture, forestry and wood energy sector are the leading sources of biomass for bioenergy. However, to be acceptable, biomass feedstock must be produced sustainably. Bioenergy from sustainably managed systems could provide a renewable and carbon neutral source of energy. Bioenergy systems can be relatively complex, intersectoral and site- and scale-specific. The environmental benefits of biomass-for-energy production systems can vary strongly, depending on site properties, climate, management system and input intensities. Bioenergy supply is closely linked to issues of water and land use. It is important to understand the effects of introducing it as well as it is necessary to promote integrated and synergic policies and approaches in the sectors of forestry, agriculture, energy, industry and environment. Biofuels offer attractive solutions to reducing GHG emissions, addressing energy security concerns and have also other socio-economic advantages. Currently produced biofuels are classified as first-generation. Some first-generation biofuels, such as for example ethanol from corn possibly have a limited role in the future transport fuel mix, other ones such as ethanol from sugarcane or biodiesel made from oils extracted from rerennial crops, as well as non-food and industrial crops requiring minimal input and maintenance and offering several benefits over conventional annual crops for ethanol production are promising. Sugarcane ethanol has greenhouse gas (GHG) emissions avoidance potential; can be produced sustainably; can be cost effective without governments support mechanisms, provide useful and valuable co-products; and, if carefully managed with due regard given to sustainable land use, can support the drive for sustainable development in many developing countries. Sugarcane ethanol - currently the most effective biofuel at displacing GHG emissions - is already mitigating GHGs in Brazil. Jatropha curcas L., a multipurpose, drought resistant, perennial plant has gained lot of importance for the production of biodiesel. However, it is important to point out that nearly all of studies have overstated the impacts of first-generation biofuels on global agricultural and land markets due to the fact that they have ignored the role of biofuel by-products. However, feed by-products of first-generation biofuels, such as dried distillers grains with soluble and oilseed meals are used in the livestock industry as protein and energy sources mitigates the price impacts of biofuel production as well as reduce the demand for cropland and moderate the indirect land use consequences. The production of second generation biofuels is expected to start within a few years. Many of the problems associated with first-generation biofuels can be solved by the production of second generation biofuels manufactured from abundant ligno-cellulosic materials such as cereal straw, sugar cane bagasse, forest residues, wastes and dedicated feedstocks (purpose-grown vegetative grasses, short rotation forests and other energy crops). These feedstocks are not food competitive, do not require additional agricultural land and can be grown on marginal and wasteland. Depending on the feedstock choice and the cultivation technique, second-generation biofuel production has the potential to provide benefits such as consuming waste residues and making use of abandoned land. As much as 97-98% of GHG emissions could be avoided by substituting a fossil fuel with wood fuel. Forest fertilization is an attractive option for increasing energy security and reducing net GHG emission. In addition to carbon dioxide the emissions of methane and nitrous oxides may be important factors in GHG balance of biofuels. Forest management rules, best practices for nitrogen fertilizer use and development of second generation technologies use reduce these emissions. Soils have an important role in the global budget of greenhouse gases. However, the effects of biomass production on soil properties are entirely site and practice-specific and little is known about long-term impact. Soil biological systems are resilient and they do not show any lasting impacts due to intensive site management activities. Land management practices can change dramatically the characteristic and gas exchange of an ecosystem. GHG benefits from biomass feedstock use are in some cases significantly lower if the effects of direct¹ or indirect (ILUC²) land use change are taken into account. LUC and ILUC can impact the GHG emission by affecting carbon balance in soil and thus ecosystem. To understand carbon fluxes in an ecosystem large ecosystem units and time scale are critical. Mitigation measures of the impact of land use change on greenhouse gas emissions include the use of residues as feedstock, cultivation of feedstock on abandoned arable land and use of feedstock by-products as substitutes for primary crops as animal feed. Cropping management is the other key factor in estimating GHG emissions associated with LUC and there is significant opportunity to reduce the potential carbon debt and GHG emissions through improved crop and soil management practices, including crop choice, intensity of inputs, harvesting strategy, and tilling practices. Also a system with whole trees harvesting with nutrient compensation is closely to being greenhouse-gas-neutral. Biochar applied to the soil offers a direct method for sequestrating C and generating bioenergy. However, the most recent studies showing that emissions resulting from ILUC are significant have not been systematically compared and summarized and current practices for estimating the effects of ILUC suffer from large uncertainties. Therefore, it seems to be delicate to include the ILUC effects in the GHG emission balance at a country level. The land availability is an important factor in determining bioenergy sustainability. However, even though food and biofuel/biomass can compete for land, this is not inevitably the case. The pattern of completion competition will e.g. depend on whether food security policies are in place. Moreover, the great potential for uncomplicated biomass production lies in using residues and organic waste, introduction of second generation biofuels which are more efficient in use of land and bioresources as well as restoration of degraded and wasted areas. Agroforestry has high potential for simultaneously satisfying many important objectives at ecosystems, economic and social levels. For example, as a very flexible, but low-input system, alley cropping can supply biomass resources in a sustainable way and at the same time provide ecological benefits in Central Europe. A farming system that integrates woody crops with conventional agricultural crops/pasture can more fully utilize the basic resources of water, carbon dioxide, nutrients, and sunlight, thereby producing greater total biomass yield. Overall, whether food prices will rise in parallel to an increase in biofuel demand will depend, more on trade barriers, subsidies, policies and limitations of marketing infrastructure than on lack of physical capacity. There are plant species that provide not only biofuel resources but also has the potential to sequestrate carbon to soil. For example, reed canary grass (RCG, Phalaris arundinacea L.) indicates the potential as a carbon sink. Harvest residues are increasingly utilized to produce energy. Sweden developed a series of recommendations and good-practice guidelines (GPG) for whole tree harvesting practices. Water has a multifarious relationship to energy. Biofuel production will have a relatively minor impact on the global water use. It is critically important to use low-quality water sources and to select the crops and countries that (under current production circumstances) produce bioenergy feedstock in the water-efficient way. However, local and regional impacts of biofuel production could be substantial. Knowledge of watershed characteristics, local hydrology and natural peak flow patterns coupled with site planning, location choice and species choice, are all factors that will determine whether or not this relationship is sustainable. For example, bioethanol's water requirements can range from 5 to 2138 L per liter of ethanol depending on regional irrigation practices. Moreover, sugarcane in Brazil evaporates 2,200 liters for every liter of ethanol, but this demand is met by abundant rainfall. Biomass production can have both positive and negative effects on species diversity. However, woodfuel production systems as well as agroforestry have the potential to increase biodiversity. A regional energy planning could have an important role to play in order to achieve energy-efficient and cost-efficient energy systems. Closing the loop through the optimization of all resources is essential to minimize conflicts in resource requirements as a result of increased biomass feedstock production. A systems approach where the agricultural, forestry, energy, and environmental sectors are considered as components of a single system, and environmental liabilities are used as recoverable resources for biomass feedstock production has the potential to significantly improve the economic, social, and environmental sustainability of biofuels. The LCA (life cycle analysis) approach takes into account all the input and output flows occurring in biomass production systems. The source of biomass has a big impact on LCA outcomes and there is a broad agreement in the scientific community that LCA is one of the best methodologies for the GHG balance calculation of biomass systems. Overall, maximizing benefits of bioenergy while minimizing negative impacts is most likely to occur in the presence of adequate knowledge and frameworks, such as for example certification systems, policy and guidelines. Criteria for achieving sustainability and best land use practices when producing biomass for energy must be established and adopted. ___________ ¹ Direct land-use change occurs when feedstock for biofuels purposes (e.g. soybean for biodiesel) displace a prior land-use (e.g. forest), thereby generating possible changes in the carbon stock of that land. ² Indirect land-use change (ILUC) occurs when pressure on agriculture due to the displacement of previous activity or use of the biomass induces land-use changes on other lands.
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