千岛湖国家重要湿地生态环境质量评价

利用中国环境监测总站生态遥感数据库和浙江大学遥感与GIS实验室的遥感影像数据,结合地面监测网调查,按照中国环境监测总站制定的《生态环境质量评价技术规定》标准,运用层次分析法,选取生物丰度指数等5个指标分析区域内生物、植被、水资源、土地以及环境污染等情况,通过赋予各指标不同的权重,计算区域生态环境质量指数,综合评价区域总体生态环境质量。结果表明,千岛湖湿地生物丰度指数、植被覆盖指数、水网密度指数、土地退化指数和污染负荷指数分别为89.12、76.28、96.61、0.17和3.56,生态环境质量指数90.76,生态环境质量优。

The Eco-environmental Quality Evaluation on the Thousand-isles Lake National Important Wetland

Based on the ecology RS database of the Chinese National Environmental Monitoring Center(CNEMC) as well as the remote sensing image data of Zhejiang University RS & Geographical Information System(GIS) Laboratory,and combined with the investigation of the ground monitoring network,according to the criteria of the Eco-environmental Quality Evaluation Technology Regulations made by CNEMC,the Analytic Hierarchy Process(AHP) method were used;the situation of the biology,vegetation,water resource,soil and environmental pollution in this region were analyzed selecting species abundance index and other five indices;regional ecological environmental quality indices were calculated by giving different weights on each index;regional total ecological environment quality were comprehensively evaluated.Result shows that the Biological Abundance Indices,Vegetation Cover Indices,Water-network Density Indices,Land Degradation Indices and Pollution Load Indices in the Thousand-isles Lake are respectively 89.12,76.28,96.61,0.17 & 3.56;the eco-environmental quality indices are 90.76;the eco-environmental quality is excellent.