Heterogeneity and non-linearity of ecosystem responses to climate change in the Qilian Mountains National Park, China

作     者：GAO Xiang WEN Ruiyang Kevin LO LI Jie YAN An GAO Xiang;WEN Ruiyang;Kevin LO;LI Jie;YAN An

作者机构：College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Department of GeographyHong Kong Baptist UniversityHong Kong 999077China 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2023年第15卷第5期

页      面：508-522页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070601[理学-气象学] 08[工学] 0706[理学-大气科学] 0713[理学-生态学] 

基　　金：supported by the National Key Research and Development Program of China (2019YFC0507402) 

主　　题：ecosystem resistance ecosystem stability climate change vegetation sensitivity index(VSI) Qilian Mountains National Park 

摘      要：Ecosystem responses to climate change,particularly in arid environments,is an understudied *** study conducted a spatial analysis of ecosystem responses to short-term variability in temperature,precipitation,and solar radiation in the Qilian Mountains National Park,an arid mountainous region in Northwest *** collected precipitation and temperature data from the National Science and Technology Infrastructure Platform,solar radiation data from the China Meteorological Forcing Dataset,and vegetation cover remote-sensing data from the Moderate Resolution Imaging *** used the vegetation sensitivity index to identify areas sensitive to climate change and to determine which climatic factors were significant in this *** findings revealed a high degree of heterogeneity and non-linearity of ecosystem responses to climate *** types of heterogeneity were identified:longitude,altitude,ecosystem,and climate ***,the characteristics of nonlinear ecosystem responses to climate change included:(1)inconsistency in the controlling climatic factors for the same ecosystems in different geographical settings;(2)the interaction between different climatic factors results in varying weights that affect ecosystem stability and makes them difficult to determine;and(3)the hysteresis effect of vegetation increases the uncertainty of ecosystem responses to climate *** findings are significant because they highlight the complexity of ecosystem responses to climate ***,the identification of areas that are particularly sensitive to climate change and the influencing factors has important implications for predicting and managing the impacts of climate change on ecosystems,which can help protect the stability of ecosystems in the Qilian Mountains National Park.