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Urban ecological security dynamic analysis based on an innovative emergy ecological footprint method

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Abstract

In China, with the rapid development of economy and the advancement of urbanization, the deterioration of urban ecological environment is obvious. In order to obtain the quantitative state of urban ecological security, this paper contributes an integrated and coupled emergy ecological footprint framework and Bei**g city was selected to verify methodology effect in this paper. The results demonstrate that: (1) from 2010 to 2019, the change range of EEFB is from 6.37 to 9.29%; meanwhile, EEFI is from 7.95 to 17.72%; EEFE is from 36.36 to 63.71%; EEFP is from 18.45% to 41.65%. Comparing the proportions of four subparts, the energy resource products (EEFE) and emissions (EEFP) are the main factors, far more significant than biological resources (EEFB) and industrial products (EEFI). (2) Compared to all ECCS data, there is a definite growing trend in Bei**g city, from 2.68E + 4 hm2/cap in 2010 to 4.72E+4 hm2/cap in 2019, approximately 42.22% growth range. (3) Four sustainable indicators analysis: The changes of EEFT, EBI, and EEF are from 3.1, 2.46, and 1.02 in 2010 to 0.688, 9.29 and 1.14 in 2019, respectively. For EDI, total proportions of fossil land and built-up land are 85.25% to 90.43% of the entire EEF in Bei**g city. These results reflect that Bei**g city is suffering from a substantial ecological challenge due to remarkable ecological deficit, awfully high emergy ecological footprint intensity, and low cooperation level between ecological system and economic system. To identify key improvement factors, Pearson correlation analysis was conducted in this paper and revealed the most positive and negative elements, which are the unbalanced industrial structure and a large proportion heavy and polluting industries in Bei**g city. Finally, based on the pivotal influencing factors, corresponding strategies and measures are proposed to improve and optimize the ecological security in Bei**g city.

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Acknowledgement

The work described in this paper was supported by the postgraduate research & Practice innovation program of Jiangsu province (KYCX18_0104).

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Authors and Affiliations

  1. School of Architecture, Southeast University, Nan**g, 210096, China

    Junxue Zhang

  2. Environmental school, China University of Geosciences, Wuhan, 430070, China

    Lin Ma

  3. State Key Laboratory of Biogeology and Environmental Geology, Wuhan, 430070, China

    Lin Ma

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  1. Junxue Zhang
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  2. Lin Ma
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Correspondence to Junxue Zhang.

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Zhang, J., Ma, L. Urban ecological security dynamic analysis based on an innovative emergy ecological footprint method. Environ Dev Sustain 23, 16163–16191 (2021). https://doi.org/10.1007/s10668-021-01341-z

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