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[1]ZHANG Yujiao,ZENG Jie,CHEN Wanxu,et al.Assessment on Ecological Risk of Danjiangkou Reservoir Area Based on Adaptive Cycle[J].Research of Soil and Water Conservation,2022,29(01):349-360.

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Assessment on Ecological Risk of Danjiangkou Reservoir Area Based on Adaptive Cycle

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 01 Page number: 349-360 Column: Public date: 2022-02-20

Title:: Assessment on Ecological Risk of Danjiangkou Reservoir Area Based on Adaptive Cycle

Author(s):: ZHANG Yujiao, ZENG Jie, CHEN Wanxu, HUANG Cheng; (School of Geography and Information Engineering, China University of Geosciences, Wuhan 430078, China)

Keywords:: assessment on ecological risk; socio-ecological system; adaptive cycle; Danjiangkou Reservoir area

CLC:: X826

DOI:: -

Abstract:: The reservoir area is an important part of the river basin and water system. It is of great significance for the decision making of ecological risk adaptation and mitigation to clarify the eco-environmental effects and comprehensive ecological risks in the process of socio-economic development of the reservoir area. The study of self-organization dynamic evolution process of the ecosystems in the reservoir areas has been ignored in the existing researches, it is therefore necessary to further consider the spatiotemporal interaction process between the ecosystem and the socio-economic system in the reservoir area, and to make a more comprehensive and targeted assessment on the ecological risk to make up for the lack of quantitative evaluation of ecological risk in reservoir area. To this end, this study attempted to take Danjiangkou Reservoir area as the study case to characterize the cycle of ecological risk adaptability in seven counties in the Danjiangkou Reservoir area based on the theoretical framework of potential-connectivity-resilience, which comprehensively considered factors such as the ecological environment, landscape structure and human activities in the reservoir area from 1990 to 2018. The results showed that:(1)the overall ecological risk level in Danjiangkou Reservoir showed a fluctuating downward trend, and there were regional differences in the variation trend of ecological risk; Xichuan County, Maojian District, and Zhangwan District were the regions with increasing ecological risk;(2)the stage of the adaptive cycle could provide basises for judging the current ecological risk situation in the reservoir area; the phases of release, reorganization, and fossilization of the adaptive cycle showed an increasing trend of ecological risk. The modified adaptive cycle model has a more obvious indicator effect on the risk of system fossilization. Since 2015, the socio-ecosystem of Danjiangkou Reservoir area has been at an important transition stage. Effective prevention of further aggravation of ecological risks is the key to the current ecosystem management of the reservoir area, which is crucial for maintaining the sustainability of the socio-ecosystem of the reservoir area.

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Last Update: 2022-02-20