京津唐城市群不透水地表增长对水环境的影响(英文)

编号 zgly0001585761

文献类型 期刊论文

文献题名 京津唐城市群不透水地表增长对水环境的影响(英文)

作者 匡文慧 

作者单位 InstituteofGeographicSciencesandNaturalResourcesResearch  CAS 

母体文献 Journal of Geographical Sciences 

年卷期 2012年03期

年份 2012 

分类号 X52 

关键词 Beijing-Tianjin-TangshanMetropolitanArea  impervioussurface  waterenvironment  urbanareas  remotesensing 

文摘内容 The impervious surface area (ISA) at the regional scale is one of the important en-vironmental factors for examining the interaction and mechanism of Land Use/Cover Change (LUCC)-ecosystem processes-climate change under the interactions of urbanization and global environmental change. Timely and accurate extraction of ISA from remotely sensed data at the regional scale is challenging. This study explored the ISA extraction based on MODIS and DMSP-OLS data and the incorporation of China’s land use/cover data. ISA datasets in Beijing-Tianjin-Tangshan Metropolitan Area (BTTMA) in 2000 and 2008 at a spa-tial resolution of 250 m were developed, their spatiotemporal changes were analyzed, and their impacts on water quality were then evaluated. The results indicated that ISA in BTTMA increased rapidly along urban fringe, transportation corridors and coastal belt both in intensity and extents from 2000 to 2008. Three cities (Tangshan, Langfang and Qinhuangdao) in Hebei Province had higher ISA growth rates than Beijing due to the pressure of population-re?sour?ces-envi?ronments in the city resulting in increasingly transferring industries to the nearby areas. The dense ISA distribution in BTTMA has serious impacts on water quality in the Haihe River watershed. Meanwhile, the proportion of ISA in sub-watersheds has significantly linear relationships with the densities of river COD and NH3-N.