洱海流域生态系统质量变化及其对气候因子的响应

doi:10.3969/j.issn.1673-503X.2023.01.012

Abstract

Abstract:

Using the multi-source remote sensing data and meteorological observation data, a comprehensive evaluation model of remote sensing was constructed based on the ecosystem productivity index (EPI), stability index (ESI), and bearing capacity index (EBCI).The ecosystem quality of the Erhai Basin from 2005 to 2020 was quantitatively studied, and the correlation between its changes and climatic factors was analyzed.The results indicated that the mean value of the ecosystem quality comprehensive index (EQCI) in Erhai Basin was 56.49 (total score was 100), and the mean value of EPI, ESI, and EBCI was 49.05, 74.16, and 56.97, respectively.It could be seen that the ecosystem stability of the Erhai basin was good, and the EPI, ESI, EBCI, and EQCI all showed an increasing trend in the past 16 years.Among different ecosystems, the level of environmental quality in descending order was forest>grassland>farmland>town>wetland>water body.The transformation of local classes into urban types would have a negative impact on ecosystem quality.There was a positive correlation between air temperature, precipitation, and EQCI in grassland, forest, and farmland ecosystems, and a negative correlation between air temperature and EQCI in urban ecosystems.

Key words: Ecosystem quality, Comprehensive index method, Remote sensing, Climatic factors

CLC Number:

X171.1

Yu-qin HE,Hong XU,Jin-xin CHENG,Li-zhang FAN. Variation of ecosystem quality and its response to climatic factors in Erhai Basin[J]. Journal of Meteorology and Environment, 2023, 39(1): 100-106.

Figures/Tables 6

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Variation of ecosystem quality and its response to climatic factors in Erhai Basin

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