The spatio-temporal distribution of ecosystem health and its driving factors in the Yunnan-Guizhou Plateau region

doi:10.13474/j.cnki.11-2246.2024.0807

Abstract

Abstract: To solve the problem of the spatio-temporal distribution of ecosystem health (EH)and the influence of its driving factors in the Yunnan-Guizhou Plateau, this paper constructs an EH assessment model of “vigor-organization-resilience-service” to analyze the spatio-temporal distribution of EH from 2000 to 2020, and then uses the XGBoost model and the SHAP explanation model to analyze the specific functional relationship between each driving factors and EH. The results showed that: ①From 2000 to 2020, the EH of the western region in Yunnan-Guizhou Plateau is better than that of the eastern region, and the low EH counties are concentrated in the northeast region. ②Weak EH counties decreased from 40% in 2000 to 24% in 2020, the overall trend of global improvement is present. ③There is a decreasing cubic function relationship between urbanization level, rainfall and EH, there is an increasing cubic function relationship between temperature, normalized vegetation index and EH, and there is a fluctuating quadratic function relationship between elevation and EH. This study aims to provide a new scheme for region EH monitoring and a reference for ecological protection and restoration in Yunnan-Guizhou Plateau region.

Key words: ecosystem health, spatio-temporal distribution, driving factors, XGBoost model, SHAP model

CLC Number:

P237

ZHANG Xuepeng, ZENG Cheng, GOU Peng, HUANG Yingshuang. The spatio-temporal distribution of ecosystem health and its driving factors in the Yunnan-Guizhou Plateau region[J]. Bulletin of Surveying and Mapping, 2024, 0(8): 37-41.

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