Spatial-temporal heterogeneity of ecological quality changes across the Qinghai-Tibet Plateau under the influence of climate factors and human activities

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外文摘要：Over the last few decades,the ecological quality of the Qinghai-Tibet Plateau(QTP)has significantly changed due to climate warming,humidification,and increasing human activities.Thus,evaluating this region's ecological quality and dominant factors is crucial for sustainable development.In this study,the changes in the ecological quality on the QTP from 2000 to 2020 were evaluated based on aggregated indices and Sen-MK trend analyses,and the dominant factors affecting the ecological quality of the QTP were quantitatively analyzed using decision tree classification.The results revealed that(1)the ecological quality of the QTP exhibited an overall high trend in the east and a low pattern in the west;(2)the ecological quality of the QTP significantly increased from 2000 to 2020,and human activities were the dominant factors causing this change;and(3)the changes in the ecological quality and dominant factors exhibited obvious spatiotemporal heterogeneity.The area with an improved ecological quality occurred mainly in the northern QTP region.It was governed by human activities and pre-cipitation.In contrast,the area with a deteriorated ecological quality occurred largely in the southern QTP region and was dominated by human activities and temperature.The 2000-2010 period was the most significant period of heterogeneity regarding of ecological quality and its driving factors.(4)The change in the ecological quality was mainly affected by the synergistic relationship between human activities and climate change in this region,which encompassed multiple dominant factors.This study provides important information on the spatiotemporal heterogeneity of ecological quality change and its dominant factors on the QTP and offers systematic guidance for the planning and implementation of ecological protection projects.

外文关键词：

Remote sensing-based ecological index(RSEI)Dominant factorsSynergies and trade-offsQinghai-Tibet Plateau

作者：

ZiPing Zhang、YuWei Cui、WenJia Tang、Sen Li

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作者单位：

Qinghai Province Ecological and Environmental Monitoring Center,Xining,Qinghai 810007,China

Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China

University of Chinese Academy of Sciences,Beijing 100049,China

基金：

Qinghai Province Science and Technology Plan Basic Research ProgramSecond Tibetan Plateau Scientific Expedition and Research Program

项目编号：

2022-ZJ-7182019QZKK0608

出版年：

2024

DOI：

10.1016/j.rcar.2024.05.002

寒旱区科学(英文版)

中国科学院寒区旱区环境与工程研究所,科学出版社有限责任公司

寒旱区科学(英文版)

影响因子：0.237

ISSN：1674-3822

年,卷(期)：2024.16(3)