[1]YAN Wei,LIU Yanzhong,CHEN Yong,et al.Research on Eco-Security Based on Resource Flow and Eco-Carrier[J].Research of Soil and Water Conservation,2020,27(06):293-299.
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Research on Eco-Security Based on Resource Flow and Eco-Carrier
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
293-299
Column:
目次
Public date:
2020-10-20
- Title:
- Research on Eco-Security Based on Resource Flow and Eco-Carrier
- Keywords:
- ecological security; ecological footprint method; emergy theory; ecological carrier; Linxiang City
- CLC:
- X826
- DOI:
- -
- Abstract:
- In order to solve the problem of the inaccurate judgment of ecological security caused by the lack of research on the security status of ecological carriers in the existing research, Linxiang City was taken as the example. Based on the generally accepted connotation of ecological security, the improved ecological footprint method was used to complete the judgment of the security status at the level of resource flow, and then the theory of emergy method and systematics method were combined to construct the security classification system of ecological carrier to examine the security status of ecological carrier is completed. The conclusion of ecological security evaluation can be obtained. The results showed that:(1)from 2005 to 2017, Linxiang City was in a safe state on the level of resource flow as a whole; the security level of the whole ecological carrier was from level Ⅳ-U to level Ⅱ-D; the security status of the ecological carrier experienced a stable rise and degradation process, and the overall status of the regional ecological carrier was in a safe state, so Linxiang City was in an ecological security state;(2)from the perspective of land type change, in 2005—2017, except for fossil energy land, other land types were in a safe state of resource flow, but the capacities of cultivated land and water area in the ecological carrier were degraded and the state were not safe, so extensive production and excessive use of chemical fertilizer and pesticide that blindly pursued output but ignored marginal benefit should be reduced, so as to improve the carrier state. The comprehensive judgment of resource flow and ecological carrier security state can reflect the regional ecological security state more comprehensively, and also provide reference for the development of regional ecological construction.
- References:
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Last Update:
2020-10-20