Assessment of eco-quality in the Three Gorges Reservoir area based on RSEI suitable for autumn and winter

doi:10.13474/j.cnki.11-2246.2023.0289

Abstract

Abstract: RSEI is an ecological index that can evaluate ecological environment quality in a rapid, real-time, quantitative, and multi-temporal manner, while RSEI has the problem of inadequate inversion characterization of ecological quality in autumn and winter seasons. In response to this problem, a RSEI suitable for autumn and winter seasons is proposed. First, the four indicators of RSEI are analyzed by using geographic detectors to see if they are applicable to the inversion of ecological quality in the autumn and winter seasons. Then the vegetation cover, vegetation health index, surface water content index, surface temperature and air quality index are used to construct the RSEI applicable to the autumn and winter seasons, and the applicability is verified. The final inversion and spatio-temporal analysis of the ecological and environmental quality of the Three Gorges Reservoir area in autumn and winter show that: ①The ecological and environmental quality of the reservoir area show an overall trend of improvement; ②The ecological and environmental quality of 77% of the area is relatively stable;③The ecological environment of the reservoir area is predicted to show an overall trend of future and continuous improvement.

Key words: ecological environment, remote sensing ecological index, autumn and winter, the Three Gorges Reservoir area

CLC Number:

P237

JIANG Jundi, LI jia, CHEN Yanming, LAN Qiuping, CHEN Feng, GAO Jiandong, LIU Yinfeng. Assessment of eco-quality in the Three Gorges Reservoir area based on RSEI suitable for autumn and winter[J]. Bulletin of Surveying and Mapping, 2023, 0(10): 14-19.

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