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Displaying 861 - 865 of 1605Effects of rapid urban sprawl on urban forest carbon stocks: Integrating remotely sensed, GIS and forest inventory data
Research on the effects of urban sprawl on carbon stocks within urban forests can help support policy for sustainable urban design. This is particularly important given climate change and environmental deterioration as a result of rapid urbanization. The purpose of this study was to quantify the effects of urban sprawl on dynamics of forest carbon stock and density in Xiamen, a typical city experiencing rapid urbanization in China.
Drivers of wetland disturbance and biodiversity impacts on a tropical oceanic island
Wetlands are biologically important elements of landscapes and among the most threatened ecosystems on Earth. On the island of Mauritius, many remaining wetlands are being rapidly converted and fragmented by intense land-use demands. We surveyed 209 coastal wetlands on Mauritius to assess their biophysical attributes, land-use activities, and patterns of disturbance, to help identify factors that threaten wetland biodiversity. Most wetlands exhibited severe edge-related disturbances and more than half were fragmented.
Fertile ground? Options for a science–policy platform for land
The United Nations Convention to Combat Desertification (UNCCD) remains the only ‘Rio Convention’ that is not well served by the scientific community and lacks the equivalent of an IPCC (Intergovernmental Panel on Climate Change) or the proposed IPBES (Intergovernmental Science–Policy Platform on Biodiversity and Ecosystem Services).
South Africa's national REDD+ initiative: assessing the potential of the forestry sector on climate change mitigation
Reducing emissions from deforestation and forest degradation in developing countries (REDD+) is regarded by its proponents as one of the more efficient and cost effective ways to mitigate climate change. There was further progress toward the implementation of this mechanism at the 16th Conference of Parties (COP) in Cancun in December 2010. Many countries in southern African, including South Africa, have not been integrated (do not participate) into the UN-REDD+ programme, probably due to their low forest cover and national rates of deforestation.
dominant erosion processes supplying fine sediment to three major rivers in tropical Australia, the Daly (NT), Mitchell (Qld) and Flinders (Qld) Rivers
The tropics of northern Australia have received relatively little attention with regard to the impact of soil erosion on the many large river systems that are an important part of Australia's water resource, especially given the high potential for erosion when long dry seasons are followed by intense wet season rain. Here we use ¹³⁷Cs concentrations to determine the erosion processes supplying sediment to two major northern Australian Rivers; the Daly River (Northern Territory), and the Mitchell River (Queensland).