白鹤滩水电站坝址区域生态环境质量评价  

Quality evaluation of eco-environment at Baihetan Hydropower Station area

作　　者：陈文夫 王玮 陈洋 邓鑫欣 张勇 CHEN Wenfu;WANG Wei;CHEN Yang;DENG Xinxin;ZHANG Yong(China Three Gorges Construction Engineering(Group)Co.,Ltd.,Beijing 100038,China;Yangtze River Basin Monitoring Center Station for Soil and Water Conservation,Changjiang Water Resources Commission,Wuhan 430010,China)

机构地区：[1]中国三峡建工(集团)有限公司,北京100038 [2]长江水利委员会长江流域水土保持监测中心站,湖北武汉430010

出　　处：《人民长江》2022年第11期35-41,52,共8页Yangtze River

基　　金：中国三峡建设管理有限公司科技攻关项目(BHT/0867)。

摘　　要：生态环境质量是区域生态建设的核心内容之一,为了探讨生态环境质量的时空动态变化与土地利用覆被之间的权衡与协同,以白鹤滩水电站坝址区域为研究区,基于2017~2021年5期的哨兵2号遥感影像,选取生物丰度、植被覆盖度、土地退化指数和土壤湿度指数4个因子,对研究区2017~2021年的生态环境质量进行评价。结果表明:①5 a间,研究区内生态环境质量呈现小区域零散变差、大面积总体向好的趋势;②各生态质量等级呈斑块状分布,以等级一般为主,生态质量等级多为一般向良好等级转变;③研究区的土地利用类型空间布局与生态质量的高低之间有高度协同关系,具体表现为生境质量高区集中分布在生态较好的林地和水域,人类活动较为密集地区生境质量较差。Ecological environment quality is one of the core contents of regional ecological construction.For the trade-off and synergy between the temporal and spatial dynamics of ecological environment quality and land use/cover,taking the Baihetan Hydropower Station area as the research area,based on the five images of the sentinel 2 remote sensing during 2017 to 2021,four factors are selected including biological richness index,vegetation coverage index,normalized differential soil index and normalized difference moisture index,in which the ecological quality index is used to evaluate the ecological environment quality from 2017 to 2021.The results show that:①During these five years,the ecological environment quality in the study area has shown an upward trend.The ecological quality has shown scattered deterioration in small areas but the totality showed an increasing trend.②The ecological quality grades are distributed in patches,with general grades as dominant,the ecological quality grades mostly shift from general to good grades.③There is a highly synergistic relationship between the spatial layout of land use types in the study area and the level of ecological quality,which is manifested that the areas with high habitat quality concentrate basically in forest land and water areas,while the quality of the local habitat is poor where human activities are more intensive.

关 键 词：区域环境质量评价 生态质量指数 土地利用 白鹤滩水电站 

分 类 号：X821[环境科学与工程—环境工程]