文档介绍：中文摘要摘要区域生态环境质量问题,是当今全人类共同面对的、必须优先研究并且迫切需要解决的重大问题。目前生态系统评估已经成为相关学科的前沿和热点研究领域。基于景观生态学、生态学、地理学、可持续发展理论等理论体系上的区域生态环境质量评价尚不成熟,至今尚没有一种完善、成熟并能得到广泛推广应用的环境评价方法。本文基于压力一状态一响应模型,建立了区域生态环境质量评价的概念框架、区域生态环境系统质量评价指标体系、层次分析一变权一模糊复合评价模型。利用3s和数据库技术进行了遥感信息提取前的图象处理,植被指数NDVI 提取,土地覆被和水土流失信息提取,缓冲区分析,数据叠加分析等应用。对沿河县区域生态环境系统质量进行了单因素和综合评价,在此基础上利用建立的GIS 数据库对沿河县生态环境进行了生态规划调控措施研究。研究结果表明,栅格单元评价较精确的反映了区域的环境质量分布,采用本文建立的指标体系和变权模糊评价模型得到的两个矢量面评价结果,基本保留了栅格数据单元信息,数据丢失较少,实现了宏观评价(矢量面评价)和微观评价(栅格单元评价)的较好结合,突出了全县生态质量恶化地区的主导因子,对全县范围内的生态工程布置的时序和重点具有重要指导意义。基于小流域分割技术和行政单元进行生态评价单元划分评价单元的方法,较好的反映了区域生态质量变化趋势。同时基于建立的沿河区域生态环境质量评价因子GIS数据库和各项评价结果,对沿河县地区进行土地评级、生态环境目标建设规划,森林保护规划、水土保持规划起到了很好的支撑作用。关键词:区域生态环境质量评价,3S,生态规划,GIS 荚文攮要 At present,the quality oftheregional ecological environment is animpoflant issue thatmust be firstly studied system assessment has e the frontofrelationalsubjects andthefocusof science studies。The assessment oftheregional ecological environmental quality based on landscape ecology,ecology, geography,the sustained development theory,and SO on,is is not aperfectand mature environmental assessment measure that Call bepopularly thelight ofthepressure·state—response model,the concept frame ofthe assessment ofthere:gional environmental quality,the indicatorsystem,and theAHP- changingweight—prehensive assessment model havebeen builtinthispaper. Utilizing 3S and database technology,the image pretreatment of extracting RS information,the NDVI extracting,the information extracting oflandcover and water lossandsoilerosion,the buffer analysis,theanalysis offolding dateshave been made. Finally,the signal factorassessment and prehensive assessment,on thebasis of theassessments and the GIS database studied theecological planning and control of Yanhe ecological environment have been done. Itisshowed thatGRID unitassessment couldexactly reflect thedistributing of theregional environmental scaleassessments based on thechanging weight-fuzzy model a