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[1]ZHOU Qigang,PENG Chunhua,LIU Xuwei,et al.Ecosystem Health Assessment of Water Level Fluctuating Zone in Three Gorges Reservoir Area Based on VOR Model[J].Research of Soil and Water Conservation,2022,29(05):310-318.

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Ecosystem Health Assessment of Water Level Fluctuating Zone in Three Gorges Reservoir Area Based on VOR Model

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 310-318 Column: Public date: 2022-08-20

Title:: Ecosystem Health Assessment of Water Level Fluctuating Zone in Three Gorges Reservoir Area Based on VOR Model

Author(s):: ZHOU Qigang^1,2, PENG Chunhua^2,3, LIU Xuwei^2,3, XIANG Yufeng⁴, ZHOU Lang^2,3; (1.College of Public Management, Chongqing Technology and Business University, Chongqing 400067, China; 2.Chongqing Key Laboratory of Spatial Data mining and Big Data Integration for Ecology and Environment, Chongqing 401320,China; 3.College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; 4.Shizhu Tujia Autonomous County Precision Survey Corpation, Chongqing 409100, China)

Keywords:: ecosystem health assessment; VOR model; remote sensing; falling zone of the Three Gorges Reservoir Area

CLC:: X82

DOI:: -

Abstract:: Healthy ecosystem ensures the sustainable development of human society, and the health status of regional ecosystem is an important indicator of regional sustainable development. In order to comprehensively diagnose the ecosystem health status of the water level fluctuating zone in the Three Gorges Reservoir area after the full impoundment, based on the theory of landscape ecology and remote sensing image data, a VOR model was constructed from three aspects of ecosystem vitality, organization and resilience to quantitatively evaluate the ecosystem health status of the water level fluctuating zone in 2010—2020. The results show that:(1)VOR model can be applied to the ecosystem health assessment of the water level fluctuating zone in the Three Gorges Reservoir area, which is fast and efficient;(2)in the past 10 years, the ecosystem health level in the study area remained in a good state, and the improved health characteristics accounted for the largest proportion, accounting for 44.47%;(3)in terms of spatial distribution, the quantitative structure of health level presented a ‘convex' distribution, and the ecosystem health status of the fluctuating zone at the bottom of the reservoir was better than that at the head and tail of the reservoir;(4)ecosystem vitality, organization and resilience had positive effects on the ecosystem health of the water level fluctuating zone, but the ecosystem vitality value of the water level fluctuating zone at the head of the reservoir was low, and the low value area accounted for more than 60% of the water level fluctuating zone area at the head of the reservoir. This study can provide reference and decision support for the protection and restoration of the water level fluctuating zone ecosystem in the Three Gorges Reservoir Area by evaluating the ecosystem health status of the water level fluctuating zone.

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Last Update: 2022-08-20