基于用地生态适宜性评价的综合环境分区研究

综合环境功能分区是实施环境分类管理的重要依据,但如何开展综合环境功能区划目前国内研究较少。以重庆北部新区为例,构建了用地生态适宜性评价的指标体系,利用GIS和RS技术,开展了土地现状、高程、坡度、起伏度、粗糙度和林地景观等单因子适宜性评价,叠加形成生态适宜性综合评价,将用地在空间上分成了最适宜、适宜、一般适宜、不适宜和最不适宜5个等级。基于用地生态适宜性评价结果,开展了北部新区综合环境功能分区,并依据不同分区的功能、环境问题提出了环境保护对策,对区域综合环境分区的思路进行了研究性的探索。

Study on Integrated Enviromental Regionalization Based on Land Ecological Suitability Assessment

Integrated environmental function regionalization is the important basis for the implementation of environment classification management,but there are few studies on how to carry it out for now.Taking Chongqing New North Zone as a study case,based on the application of GIS and RS technology,a set of indicators of land ecological suitability assessment was established,and the suitability assessment of a single factor of the land-use status,elevation,slope,rolling,roughness and woodland landscape was carried out,and a comprehensive land ecological suitability assessment was formed through overlaying of all single factor assessment layers.The results of assessment showed that the land can be divided into five types,namely,the most suitable,suitable,generally suitable,unsuitable and the most unsuitable.Based on the results of ecological suitability assessment,integrated environmental regionalization in Chongqing New North Zone was carried out,and environmental protection measures for differential were proposed according to environmental function zoning,which was an exploration of the regional integrated environmental zoning.