RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2016, Vol. 25 >> Issue (11): 1697-1703.doi: 10.11870/cjlyzyyhj201611008

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THE RESEARCH OF WATER ENVIRONMENTAL CARRYING CAPACITY IN THE PROCESS OF URBANIZATION IN JIANGSU——BASED ON COMBINATION OF EMPOWERMENT AND HALF LITER OF Γ DISTRIBUTION FUNCTION

MA Hai-liang1,2, SHI Chen-ling1, WANG Lei1   

  1. 1. Institute for Low Carbon Economy of Hohai University, Changzhou 213022, China;
    2. Jiangsu Provincial Collaborative Innovation Center of World Water Valley and Water Ecological Civilization, Nanjing 211100, China
  • Received:2016-02-23 Revised:2016-05-14 Online:2016-11-20
  • Supported by:
    Natural Science Foundation of China: the Coupling of Spatial Heterogeneity of Green Water Resources Utilization Efficiency and New Urbanization(41301620);Natural Science Foundation of China: Research on theSupplyof Small Water Conservancy Farmers Participation Underthe Social Network Relationship(41301620);Fundamental Research Fund for the Central University: Water Resources Security of Sponge Urban Construction(2016B09714)

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Abstract: Water resources carrying capacity evaluation is a very significant research method which comprehensively takes both water resource utilization and ecological environment issues into consideration. Its evaluation results can be used to clearly determine the status of regional economic and social sustainable development. On the basis of combination of empowerment with Analytic Hierarchy Process method (AHP) and variation coefficient method, water resources carrying capacity from 2003 to 2013 of Jiangsu Province was assessed and analyzed by using half-liter of Γ Distribution Index which optimized with PSO in this paper. In conclusion, from 2003 to 2013, the water resources carrying capacity of Jiangsu province was slightly increased with minor fluctuation during the past ten years, rising from 0.396 to 0.461. From 2003 to 2007, the water resources carrying capacity stayed at Ⅱ grade level and the mean of water resources carrying capacity was 0.441. After 2009, the water resources carrying capacity upgraded to Ⅲ grade level and remained at Ⅲ grade level, butit shows a deterioration trend because of the unstable situation of the outbreak of algae in Taihu Lake. The results showed that the outbreak of algae in Taihu Lake of Jiangsu in 2007 was an important turning point in promoting the water resources carrying capacity of Jiangsu, which aroused wide governmental and public attention. At the same time, the authorities of Jiangsu province documented and executed many important policies, documents as well as water conservancy projects concerning water environment protection, such as Division of Surface Water (environment) Functional Areas of Jiangsu Province and Suggestions on the Pollutant Carrying Capacity and Limited Amount of Pollutant Emission of Surface Water (Environment) Functional Areas of Jiangsu Province, so as to curb the regional water problems more scientific and efficient and provide more guidance to improve water quality. Through the construction of resource-economical and environment-friendly society and ecological civilization, water resources problems have been relieved and several evaluation indexes have been greatly improved. For instance, from 2003 to 2013, the rate of water quality reaching standard in water function zones increased from 30.23% to 56.1% and the COD emission per ten thousand industrial output value decreased from 1.98 kg every ten thousand yuan to 0.63 kg every ten thousand yuan. By comparing with the urbanization process of Jiangsu province, it can be concluded that the construction of two-oriented society and ecological civilization can help contribute to the promotion of water resources carrying capacity greatly. Finally, based on the results of analysis, three countermeasures were proposed to help promote the water resources carrying capacity, namely, transforming the economic development mode through supply-front reform, promoting the construction of water saving and ecological society with full participation of the whole society and enhancing coordination and advancing cooperation with different apartments and surrounding regions in curbing and managing the water pollution or problems in the Taihu Lake Basin.

Key words: Jiangsu, water resource carrying capacity, combination of empowerment, half liter of Γ distribution function

CLC Number: 

  • F062.1
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