丹江口库区生态的环境的现状定量分析评价.docVIP

丹江口库区生态的环境的现状定量分析评价 　　摘要:以南水北调中线工程的主要淹没区和水源地――丹江口库区为研究区域,利用遥感数据、数字地形数据和气象数据,选取水热条件、地形地貌、土地覆盖和土壤侵蚀等评价因子,对库区的自然生态环境现状进行定量分析评价。结果表明:库区的自然生态环境现状整体一般偏好,较好的占总面积的43%,一般的占47%,较差的占10%。生态环境质量存在海拔地带分异和区域差异,低海拔地段相对较好,中高海拔地段相对较差;中东部地区相对较好,北部和西部相对较差。文章分析了影响生态环境质量的主要因素,同时提出了保护与改善生态环境的几点措施。 　　关键词:南水北调;生态环境评价;丹江口库区 　　中图分类号:TV213.4;TV68文献标识码:A文章编号:1672-1683(2010)05-0002-05 　　 　　Quantitative Analysis and Evaluation of the Eco-Environment Situation of the Danjiangkou Reservoir Area 　　HUANG Jin-liang,WANG Li-hui 　　(Institute of Geodesy and Geophysics,CAS,Wuhan 430077,China) 　　Abstract:Danjiangkou reservoir area is the main submerged area and water source area of the Middle Route of the South-to-North Water Transfer Project.Using remote sensing data,and digital terrain data and meteorological data, and choosing heat and water conditions,topography, soil erosion and land coverage as evaluation factors,the natural eco-environment situation is analyzed and assessed quantitatively. The results show that the environment quality of the Danjiangkou reservoir area is general and slightly good as a whole with 43% good of total,47% general,10% poor.Eco-environment quality has elevation area differentiation and regional differences.The quality of low altitude area is relatively good,middle and high altitude areas relatively poor; and the middle-eastern areas are relatively good,northern and western relatively poor.In this paper,the effect factors of the eco-environmental quality are analyzed,and some measures for improving and protecting eco-environment are put forward. 　　Key words:the Middle Route of the South-to-North Water Transfer Project;eco-environment evaluation;Danjiangkou reservoir area 　　 　　南水北调中线工程有利于缓解京、津、华北地区水资源危机,对水源区、受水区和输水区沿线的生态环境有着深远影响。中线工程从加坝扩容后的丹江口水库引水,南水北调中线工程的安全运营和效益的充分发挥不仅仅决定于工程本身的建设质量,还决定于丹江口库区的生态环境质量。库区的生态环境质量越高,工程发挥效益和使用寿命就越长。然而,目前丹江口库区人多耕地少,既是生态脆弱区,又是人口稠密的贫困区,生态安全程度较低。因此,对库区的自然生态环境质量进行综合定量评价,分析生态环境现状,深入认识生态脆弱因素及存在的问题,可为库区生态建设以及社会经济可持续发展提供一定的科学依据。 　　根据国家发展和改革委员