中国化学品环境暴露评估领域的综合区划

大尺度空间（中国）化学品环境暴露多介质模型的建立需要先对空间做相应的区划.本文以ArcGIS软件为平台，通过有空间约束的聚类方法和水文分析方法相耦合，建立全国范围的综合分区.全国范围分为华南综合大区、华北综合大区、西北综合大区、华东综合大区、东北综合大区和西南综合大区6个综合大区.每个综合大区又分别包含了若干个综合小区，小区总数为38个.该研究为我国暴露评估的综合分区提供了一个方案，在多介质模型的建立中起着重要的作用.

Comprehensive regionalization of China for the assessment of chemical environmental exposure

The development of a large-scale multi-media model for the assessment of chemical environmental exposure in China requires the corresponding regionalization of the country first. Based on spatially constrained clustering methods coupled with hydrological analysis methods, a nationwide comprehensive regionalization was achieved with ArcGIS software. This regionalization divided whole China into six comprehensive regions (CRs), including the South CR, North CR, Northwest CR, East CR, Northeast CR, and Southwest CR. Each of the six CRs again consisted of multiple small comprehensive regions, and there were a total of 38 such small regions in China. This study provided a useful method to conduct a nationwide regionalization, which could play an important role in the development of a large-scale multi-media models for the chemical exposure assessment in China.