Study on Evaluation of Regional Ecological Environment Quality

Ecologically and environmentally, considering Guixi County, Jiangxi Province as research area, supported by RS, GIS, GPS technology and conventional statistical method, natural factors, human activities and social economics elements are chosen to evaluate regional ecological and environment quality with model in which weight values are derived from experts and fuzzy method. Evaluating factors are acquired from interpreting CBERS1/CCD data with 20meters resolution, 1 to 100000 digital geographical data, surveying data with GPS and statistics data etc., including climate, water resource, land use, forest coverage, pollution releasing, farmland per person, food yield per unit area, and GDP etc. Index system is structured. Results show that the ecological environment quality in study site arrives at second grade, which behave in good conditions compared with the other counties in some aspects like forest coverage (61%), farmland per person (0.06hm²), food yield per unit area (8025kg·hm^-2), water and soil losses area (61974hm²), biology diversity being protected well. GDP ranks in front of the Province that is beneficial to protect and harness ecological environment. Also there are some problems such as the unsatisfied water quality (third grade),frequent weather disasters and potential danger of soil erosion.

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