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[1]WANG Zhiyu,MA Junjie,CHEN Xinxin,et al.Assessment on Ecological Health of Three Developed Core Districts in Xi’an Based on Emergy Analysis[J].Research of Soil and Water Conservation,2018,25(04):317-323.

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Assessment on Ecological Health of Three Developed Core Districts in Xi’an Based on Emergy Analysis

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 04 Page number: 317-323 Column: Public date: 2018-06-13

Title:: Assessment on Ecological Health of Three Developed Core Districts in Xi’an Based on Emergy Analysis

Author(s):: WANG Zhiyu¹, MA Junjie¹, CHEN Xinxin¹, ZHAO Dan², TENG Teng¹, YANG Yucen¹; 1. College of Urban and Environmental Science, Northwest University, Xi’an 710127, China;
2. Energy Finance Trade Zone, Xixian New Area, Xi’an 710200, China

Keywords:: emergy analysis; PSR model; single factor evaluation model; multi factor comprehensive evaluation

CLC:: F062.2;X171.1

DOI:: -

Abstract:: Based on the theories and methods of emergy analysis and urban complex ecosystem, the basic data of three developed core districts in Xi’an, which is Baqiao District, Yanta District and Weiyang District, were calculated from two aspects of ecological environment system and social economic system, and the ecological health assessment was carried out to provide reasonable suggestions and scientific basis for the sustainable development of the study area. We used PSR model to establish the evaluation index system of ecosystem health in study area, and the single factor evaluation model was used to appraise the system health index, the individual index were weighted by analytic hierarchy process, finally, the ecological health degrees of three developed core districts were evaluated by multifactorial comprehensive evaluation. The results showed that the ecological health index of Baqiao District, Yanta District, Weiyang District were 0.704, 0.402 and 0.705, respectively, Baqiao District had a good ecological environment situation, but it relied more on the use of nonrenewable resources, which was not conducive to its development and should make effective utilization of the local resources; Yanta District had a better social and economic development, however, its actual population was 1.99 times higher than the population carrying capacity, the disturbance of human factors had a great influence on the ecological environment of Yanta District, the development of social economy in this area was more dependent on external input resources; the construction of new industrial park in Weiyang District combined greening with industrial production in a perfect way, but it was still dominated by second industries, the ‘Three Waste’ emission seriously influenced the ecological environment, and the development of social economy mainly consumed the local resources.

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