河南省耕地生态环境承载力评价研究

STUDY ON THE EVALUATION OF ECOLOGICAL ENVIRONMENTAL CAPACITY OF CULTIVATED LAND IN HENAN PROVINCE

关键词:  耕地生态环境承载力评价河南省

Key words:  cultivated land  ecological environment  capacity  assessment  Henan province

摘要:

［目的］通过选取相关的指标因子，针对耕地生态环境，从压力、状态、响应3个层面构建耕地生态环境承载力评价体系，并从数量、空间分布两方面对评价结果进行分析，以增强评价结果的应用性与针对性。［方法］从压力—状态—响应3个方面选取评价指标，选取14个指标因子，分析河南省不同区域耕地生态环境承载力的影响。［结果］从数量分布方面看，河南省耕地生态环境承载力以一般区为主，占比达到4154%，承载力良好区最少，占比1193%。空间分布上，河南省耕地生态环境承载力表现出明显的地域差异性，呈现出由周围地区向中部地区逐渐减弱的趋势。三门峡市、商丘市等处于耕地生态承载力的第I等级； 郑州市、开封市等处于第Ⅳ等级。［结论］虽然文章针对耕地生态环境承载力研究还处于探索阶段，但结果可为河南省耕地生态环境的管理与监测提供依据，并服务于其资源利用与区域发展方针政策的制定。

Abstract:

A capacity evaluation system of the cultivated land environment has been built based on three levels, including the pressure, the state and the response. In order to support the reasonable use of resources, the results was analyzed from the angle of the status and spatial distribution. From three aspects including the pressure, the state and the response, 14 factors were selected to analyze the ecological capacity affect in different regions in Henan. Results showed that the common area took the most proportion, which achieved 41.54%, while the favorable area took the least, 11.93%. In terms of spatial distribution, the ecological environmental capacity in Henan province had a significant regional difference. It showed a trend of gradually reduction from the north and south sides to the central region. The ecological capacity of Sanmenxia and Shangqiu were at the level of I, while Zhengzhou and Kaifeng were IV. Although the research is still in the exploratory stage, the results can provide basis for the ecological environment management and supervision. It would be helpful for the formulation of the resource utilization and regional development in Henan.