上海市土地生态环境敏感性评价

Land Eco-environmental Sensitivity Assessment in Shanghai

土地生态敏感性分析是当前全球环境变化研究的热点与前沿之一。文章在GIS空间分析技术支持下,从水环境、文物古迹及森林公园、土壤综合质量、地质灾害、土地利用类型和耕地地力6个方面,对上海市土地生态敏感性进行了单要素评价,并在单要素评价的基础上进行了综合评价。研究结果表明:上海市土地生态环境敏感性区域差异比较明显,不敏感区域占全市域面积比为43.1%,低、中度敏感区所占比例分别为38.6%、12.4%,高度敏感区面积最小,占全市面积5.9%。依据评价结果,结合土地生态环境敏感性程度,文章提出了上海市土地生态环境建设和保护的对策。

With the aid of GIS software,six indices were selected to analyze the land eco-environmental sensitivity of Shanghai,including,the aquatic environment,historic site and forest,soil quality,geological disaster,land use classification and arable land capability.Single factor assessment and comprehensive assessment were used for the study and the land eco-sensitivity was classified as being insensitive,slightly sensitive,moderately sensitive and highly sensitive.Results showed that the highly sensitive land in Shanghai shared the smallest proportion,accounting for 5.9%,while the insensitive area accounted for 43.1%.Accordingly,suggestions were submitted for future ecological management of Shanghai.