Tan Huaqing, Zhang Jinting, Zhou Xisheng. Construction of Ecological Security Patterns Based on Minimum Cumulative Resistance Model in Nanjing City[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 282-288.
DOI:
Tan Huaqing, Zhang Jinting, Zhou Xisheng. Construction of Ecological Security Patterns Based on Minimum Cumulative Resistance Model in Nanjing City[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 282-288. DOI: 10.13961/j.cnki.stbctb.2020.03.041.
Construction of Ecological Security Patterns Based on Minimum Cumulative Resistance Model in Nanjing City
[Objective] A scientific and reasonable ecological security pattern was constructed in order to provide a reference for the coordinated promotion of sustainable development of regional land and space through ecological civilization construction.[Methods] Based on biodiversity
water resource security
and geological hazard avoidance
the importance of ecological land in Nanjing City of Jiangsu Province was quantitatively evaluated to identify ecological resources. A modified ecological resistance surface was constructed by considering the influence of PM2.5 and nighttime light on species migration. A regional ecological security pattern was built by the minimum cumulative resistance model.[Results] The ecological resources of the 490.3 km2 ecological land were identified
and the national and provincial nature reserves of Nanjing City were located within the ecological area. The identification results were reasonable. The revised resistance range of the ecological resistance surface was 0-43 854.6. The high-resistance area was located on the south bank of the Yangtze River
such as the Gulou
Qinhuai
and Eastern Jianye Districts. The low-resistance area was located in the center of Pukou
Xuanwu
and the northeast of Jiangning District. The revised resistance could characterize the differences of the regional ecological processes accurately. Relying on the core components of the ecological resource areas
buffer zones
and ecological corridors
the ecological security pattern framework ("one belt
three zones
and multiple axes") of Nanjing was established.[Conclusion] The improved method of constructing an ecological security pattern was effective
and the established ecological security pattern framework is consistent with the existing main function zone implementation plan of Nanjing City.
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