摘要
以三峡库区大宁河流域为例,在生态环境质量评价指标体系的基础上,采用生态环境质量变化动态模型,对流域30年间的生态环境质量变化情况进行了分析研究。在对研究区总体生态环境质量变化格局、不同生态环境质量等级间的转变、以及区域的生态稳定性进行细致深入分析的基础上,阐明了研究区的生态环境现状、生态环境质量变化活跃程度以及引起变化的主要因素,并提出应加强对流域内生态环境优良地区的保护,加强对流域内的生态环境中度变化区及较强度变化区的生态环境恢复和重建工作,避免该类地区出现环境恶化。
The ecological environmental quality change during 30 years of Daninghe River watershed was studied in the paper based on ecological environmental quality assessment index and dynamical assessment model. Environ- mental quality status, degree of changes and its influencing factors were illustrated by particularly analyzing the change pattern of environmental quality, the conversion of different grade and environmental stability of the water- shed. It was brought forward that fine environmental quality area protection should＇ be strengthened and reconstruc- ting work of moderate and intensive environmental quality change area should be reinforced to avoid deterioration of environmental quality in the area.
出处
《三峡环境与生态》
2008年第1期6-10,共5页
Environment and Ecology in the Three Gorges
基金
国土资源部百人计划项目部分成果(2007年资助项目2007-1101)
关键词
生态环境质量
变权
动态评价
三峡库区
ecological environmental quality
change weight
dynamical assessment
Three Gorges reservoir area
