At Ifpra's World Congress in Hong Kong, the decision was taken to set up a new Scientific Task Force (STF). One of the main activities of this Task Force is to provide state-of-the-art knowledge on different aspects of parks. A major challenge is of course to find scientific proof for the benefits provided by urban parks, benefits that we often take for granted. In order to make sure that parks are part of political agendas at different levels, sound evidence of park benefits has to be provided. This need can be met by a review of existing scientific literature (best external evidence), carried out in a systematic way. By applying a systematic method the usefulness of such a document will increase, since the findings will meet the standards for evidence-based decisions.
Cities are growing in terms of economic activities, space and population thus over spilling in peri urban areas. Low population densities and land values have made the peri urban areas the target for land acquisition to accommodate planned expansion processes. In Tanzania, the Government initiated the 20,000 Plots Project in 2002 to among others, address critical shortage of planned and surveyed plots in the city and check proliferation of informal settlements. The Project was implemented in 12 areas in the City of Dar es Salaam, one of them being Wazo-Mivumoni. This study explored the processes and impacts of land acquisition on the livelihoods of peri urban households. It also built an understanding of peri urban areas in the Tanzanian context and further contextualized peri urban livelihoods in Wazo-Mivumoni. Data was collected through official, households and key informants interviews, likewise documentary review. An overarching understanding was drawn from the National Constitution (1977) that provides for the right of residents to own properties, the right to protection of their properties and payment of fair and adequate compensation subject to lawfully acquisition. Although the principal legislations for land acquisition recognize market values, government-regulated rates were instead used in Wazo-Mivumoni. The implementation process was characterized by lack of appreciation of the drivers of peri urban livelihoods, non-adherence to legal provisions and non-observarance of professional ethics. Further, the laws were found to be insufficient to adequately respond to present social and economic conditions. The implementation of the project amidst these conditions resulted to loss of assets, disruption of social networks and family ties. All these undermined household's capacity to sustain livelihoods after project implementation. Among the strategies adopted to overcome these impacts include intensification and increased innovation on farming and animal keeping; reliance on family support as well as reduction of family sizes. Despite the shortcomings, some positive gains including establishment of new economic activities (private schools, retail business and access to planned and surveyed plots) were realized. Residents participation and awareness creation during and after implementation is seen as paramount considerations for successful interventions. Others include establishment of a land cadastre to realise effective and efficient land administration system, establishment of a neutral body to verify valuation reports as well as provision of alternative plots as a measure to restore affected households to same condition as prior to acquisition.
The World Health Organisation reports a big deficit in the supply of animal protein in developing countries. Pig production in the tropics has been recommended as a likely solution to this deficiency, which also provides important sources of income (Ajala, 2007; Kagira et al., 2010; Lekule & Kyvsgaard, 2003). Pigs have high reproducibility with early maturation and a short generation interval as well as high feed conversion efficiency and comparatively small space requirements. Therefore, in many countries it is a governmental goal to promote pig production (Ajala, 2007; Kagira et al., 2010; Lekule & Kyvsgaard, 2003; Muhanguzi et al., 2012; Mutua et al., 2010).
Social sustainability in urban places is undervalued in urban planning due to the intangible nature of the concept. By valuing lived experiences of place, this research connects social and environmental sustainability pillars to support planning for socioenvironmental justice from a citizen's perspective. The quality of the urban outdoor environment is explored in relation to safety and individual and collective efficacy for social wellbeing which contextualises the role of urban green space. This study suggests socio-environmental sustainability is related at an individual and collective level. Safe social environments can support place attachment processes and safe green spaces can support self-regulation of emotions that influences behaviours. The urban outdoors can be viewed as a social learning environment. An inductive interpretative phenomenological analysis (IPA) led enquiry has been conducted which suggests urban places for social wellbeing can be explained by a framework that integrates social and environmental psychology and spatial politics theories. This study suggests that place attachment is at the heart of dynamic social environments and influences social learning behaviours through vicarious learning and the manifestation of social spaces as framed by Scannell and Gifford's Tripartite Framework of Place Attachment, Bandura's Social Cognitive Theory and Lefebvre's Theory of Produced Social Space. Designing for socio-environmental justice is associated with understanding human irrationality due to poor social and environmental quality. This research suggests the right to feeling safe and the quality of the urban environment, including safe green spaces, becomes an issue for the operation of democracy and facilitating self and collective efficacy, by recognising the invisible bricks that form urban places for social wellbeing.
Many urban trees are located on private property in residential areas, but these trees are infrequently included in urban forest strategies and plans, meaning that for most local governments, the complete urban residential tree population, its potential for supplying ecosystem services and its dynamics are unknown. This thesis examined the assessment methodologies of ecosystem services provided by trees in the attempt to provide valuable information about residential trees. The abundance of trees on individual residential properties was tested against potential decision-driving variables, collected using field work, remote sensing, questionnaire surveys and spatial property information. While residents reported positive attitudes to trees and benefits they provide, this did not necessarily result in greater tree abundance on individual properties. It was found that long-term of validation of sampling methods is required for monitoring of urban trees. Remote sensing could be seen as a reliable and non-invasive way to determine canopy cover using publicly available information in residential areas. This thesis improved understanding of residential urban trees and the ecosystem services they provide as the part of the urban forest. These assessment should include social and spatial variables influencing their development to allow residential trees to become integrated into local governance arrangement structure in order to develop informed management approaches for the entire urban forest.