Acta Geographica Sinica ›› 2011, Vol. 66 ›› Issue (11): 1486-1496.doi: 10.11821/xb201111005

Previous Articles     Next Articles

Pattern of Impervious Surface Change and Its Effect on Water Environment in the Beijing-Tianjin-Tangshan Metropolitan Area

KUANG Wenhui1, LIU Jiyuan1, LU Dengsheng2   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Indiana University, Indiana 47405, USA
  • Received:2011-01-27 Revised:2011-03-16 Online:2011-11-20 Published:2011-12-24
  • Supported by:

    National Basic Research Program of China, No.2010CB950900;National Nature Science Foundation of China, No.40901224; Opening Foundation of State Key Laboratory ofRemote Sensing Science, No.2009KFJJ005

Abstract: The impervious surface area (ISA) at the regional scale is one of important environmental factors for examining the interaction and mechanism of Land Use/Cover Change (LUCC) - ecosystem processes - regional climate change under the interactions of urbanization and global environment change. The timely and accurate extraction of ISA from remotely sensed data at the regional scale is becoming a bottle-neck issue. This study improved the MODIS NDVI and DMSP-OLS based ISA extraction method by incorporating LULC information of China. ISA datasets in Beijing-Tianjin-Tangshan Metropolitan Area (BTTMA) in 2000 and 2008 at a spatial resolution of 250 m were developed, their spatial-temporal changes were analyzed, and their impacts on water quality were evaluated. The results indicated that ISA in BTTMA has rapidly increased along urban fringe and urban transportation corridors and coastal belt both in intensity and extents from 2000 to 2008. The growth rates of ISA in Tianjin and three cities (Tanshan, Langfang, and Qinhuangdao) in Hebei Province were greater than that in Beijing. The ISA increase has great impacts on water quality; particularly, the water pollution in the Haihe River has deteriorated due to the increase and intensification of impervious surface areas.

Key words: impervious surface, water environment, urban area, remote sensing, Beijing-Tianjin-Tangshan Metropolitan Area