Development of Geospatial Ecological Indicators in Jiangxi Province, China
Peng Guo and Xiaoling Chen
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).
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.
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...
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.
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
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.
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.
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.
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.