Wetlands impacted

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  • 15 Development of Geospatial Ecological Indicators in Jiangxi Province, China Peng Guo and Xiaoling Chen 15.1 INTRODUCTION Comprehensive evaluation of ecological environments is necessary for environmental sustainability and management planning, which can provide quantitative documents as scientific guides for informed decision making. The existence of several environmental impact assessment (EIA) methods makes it difficult to make on an appropriate choice (Sankoh 1996).

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  • Avoiding and Minimizing Impacts to Wetlands Donald M. Kent and Kevin McManus - Ước tính gần đây về mức độ các vùng đất ngập nước toàn cầu khoảng 5-8,6 triệu ha (Mitsch, 1995). Tăng bằng chứng cho thấy rằng mức độ lịch sử của vùng đất ngập nước toàn cầu lớn hơn nhiều. Ví dụ, tại Nhật Bản, 45% các bãi triều có bị phá hủy từ năm 1945 (Hollis và đồ giường, 1994). Miền bắc Hy Lạp đã bị mất 94% vùng đầm lầy của nó kể từ năm 1930.

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  • Field and laboratory studies were conducted to evaluate the use of bacterial growth on aquatic insects as a metric for determining the existence of nutrient impacts in wetlands. Results from field investigations indicated that elevated concentrations of nitrate and phosphate...

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  • Geographic Information Systems (GIS) has emerged as one of the most important and widely used softwares for the social scientists in last two decades. Economists, sociologists, political scientists, public administrators, and geographers alike use GIS for capturing, storing, analyzing, and presenting spatially referenced socio-economic data. Election campaigns have been using GIS in a rapidly increasing manner. It has also been substantially used by urban and regional planners, natural resources scientists, and civil engineers.

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  • In China, where population size is the biggest in the world and environmental destruction is proceeding due to the rapid economic growth and urbanization, there is a serious water pollution problem.

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  • The idea for this book arose during the planning phases of an International Conference in Edmonton, Canada in July 2004 entitled “The Science of Changing Climates — Impacts on Agriculture, Forestry and Wetlands.” The conference was organized jointly by the Canadian Societies of Animal Science, Plant Science and Soil Science with support from Natural Resources Canada/Canadian Forest Service because they saw climate change as one of the most serious environmental problems facing the world....

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  • An outstanding feature of the lower Mekong region is the dynamic energy of its natural systems and how intimately tied most of the population is to that seasonal force. Productivity in agriculture and fisheries, for example, depends on annual floodplain inundation and nutrient dispersal. The immense scale and impact of this natural cycle is well illustrated in the annual flooding of Tonle Sap Lake in Cambodia and the Mekong River Delta which it shares with Vietnam.

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  • Global warming and changes in climate have already had observed impacts on natural ecosystems and species. Natural systems such as wetlands, mangroves, coral reefs, cloud forests, Arctic and high latitude ecosystems are especially vulnerable to climate‐induced disturbances. Enhanced protection and management of biological resources and habitats can mitigate impacts and contribute to solutions as nations and communities strive to adapt to climate change. Biodiversity is the foundation and mainstay of agriculture, forests, and fisheries.

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  • Pollution prevention practices include low impact development techniques, installation of green roofs and improved chemical handling (e.g. management of motor fuels & oil, fertilizers and pesticides). Runoff mitigation systems include basin infiltration basins, bio retention systems, constructed wetlands, retention basins and similar devices. Thermal pollution from runoff can be controlled by storm water management facilities that absorb the runoff or direct it into groundwater, such as bio retention systems and infiltration basins.

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  • Having defined long-term objectives it is necessary to assess how the present situation matches the desired situation. The key issue is identification of the potential of, and constraints upon, the present management capacity and capability in relation to carrying out the management functions defined in the long-term objectives. Such aspects as suitability of institutional framework, number of staff, recruitability of relevant new staff, educational background, and availability of financial resources should be considered.

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