摘要
依据垦利县生态环境目前存在的问题和生态环境敏感性理论,选取了植被覆盖度、地下水矿化度、潜水埋藏深度、土壤质地,地貌类型5个生态敏感性因子。在GIS技术支持下,对垦利县生态敏感性进行了单因子评价,采用专家打分法获取各指标权重,指数和法计算评价单元环境敏感度。结果表明,垦利县敏感性程度的面积与空间分布规律为:极度敏感区、高度敏感区、中度敏感区和一般敏感区,分别占研究区总面积的37.4%,25.7%,26.0%和10.9%。在总体分布上从西南向东北,随着黄河向渤海的延伸,敏感性程度逐渐增加。评价结果可为垦利县生态环境政策的制订提供科学依据。
This study was conducted to solve the environmental problems of Kenli County,based on environmental sensitivity theory.Vegetation cover,groundwater salinity,buried diving depth,soil texture,and physiognomy were selected as environmental sensitivity factors.Supported by GIS technology,each evaluation factor was evaluated,the weights were obtained through expert scoring method,and the environmental sensitivity of each unit was calculated using index-sum method.Results indicated that the extremely sensitive area occupied 37.4% of the total area,the highly sensitive area occupied 25.7%,the moderately sensitive area occupied 26.0%,and the sensitive area occupied 10.9%.From southwest to northeast,the sensitivity degree increased with the Yellow River extending to the Bohai Sea.The results can be a reference to make environmental policies in Kenli County.
出处
《水土保持通报》
CSCD
北大核心
2010年第6期214-218,共5页
Bulletin of Soil and Water Conservation
基金
国家自然科学基金"小尺度土地利用/覆盖变化与环境脆弱性的相互影响及其定量遥感方法"(40571160)
山东省自然科学基金(ZR2009BQ017)
关键词
GIS
生态环境
敏感性评价
因子分析
GIS
ecological environment
sensitivity evaluation
factor analysis
