RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2016, Vol. 25 >> Issue (06): 981-988.doi: 10.11870/cjlyzyyhj201606015

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REGIONALIZATION OF WATER ENVIRONMENTAL PRESSURE AND RISK REGIONS IN DEQING COUNTY

WEN Yu-zhao1,2, LU Yu-qi1,2,3, JIN Cheng1, CHEN Bo-wen1, YANG Zhong-chen1   

  1. 1. College of Geography Science, Nanjing Normal University, Nanjing 210023, China;
    2. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;
    3. Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing 210023, China
  • Received:2015-09-21 Revised:2016-03-10 Online:2016-06-20
  • Supported by:
    the State Key Program of National Natural Science Foundation of China (Grant No. 41430635);Graduate Student training innovation Project of Jiangsu Province (KYLX15-0744);Priory Academic Program Development of Jiangsu Higher Euducation Instifutions (16430H101)]

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Abstract: Based on the data from the first census of geographical information, Deqing County has been divided into 58 assessment units of water environment space by combining the division of small watershed and polder area. Using spatial analysis and statistical analysis in GIS and choosing sewage production from livestock and poultry, sewage discharge of key enterprises, pesticide and fertilizer input, urban and rural domestic sewage discharge, water pollution load was comprehensively analyzed and water pollution pressure was divided. This study attempted to divide target regionalization of water environment using the outcome of function zoning of both water environment and ecological environment. Meanwhile we conducted a spatial matching analysis by combining water environment target and water environment pressure of each spatial evaluation. Totally, Deqing County has been divided into seven types of water environment risk regions including low-target and low-pressure region, medium-target and low-pressure region, low-target and mediumpressure region, high-target and low-pressure region, low-target and high-pressure region, medium-target and mediumpressure region, and medium-target and high-pressure region, respectively. Then main administrative villages distributed by various pressure and risk regions are identified. This research would improve the pertinence of sewage governance in Deqing County and provide certain reference for guiding industry promotion and spatial distribution.

Key words: water environment pressure, risk regions, spatial analysis, Deqing County

CLC Number: 

  • P468
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