Impacts of climate change and human activities on vegetation dynamics on the Mongolian Plateau,East Asia from 2000 to 2023

YAN Yujie ¹CHENG Yiben ¹XIN Zhiming ²ZHOU Junyu ¹ZHOU Mengyao ¹WANG Xiaoyu¹

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作者信息

1. School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;Experimental Center of Desert Forestry,Chinese Academy of Forestry,Dengkou 015200,China
2. School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;Experimental Center of Desert Forestry,Chinese Academy of Forestry,Dengkou 015200,China;Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station,National Forestry and Grassland Administration,Dengkou 015200,China
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Abstract

The Mongolian Plateau in East Asia is one of the largest contingent arid and semi-arid areas of the world.Under the impacts of climate change and human activities,desertification is becoming increasingly severe on the Mongolian Plateau.Understanding the vegetation dynamics in this region can better characterize its ecological changes.In this study,based on Moderate Resolution Imaging Spectroradiometer(MODIS)images,we calculated the kernel normalized difference vegetation index(kNDVI)on the Mongolian Plateau from 2000 to 2023,and analyzed the changes in kNDVI using the Theil-Sen median trend analysis and Mann-Kendall significance test.We further investigated the impact of climate change on kNDVI change using partial correlation analysis and composite correlation analysis,and quantified the effects of climate change and human activities on kNDVI change by residual analysis.The results showed that kNDVI on the Mongolian Plateau was increasing overall,and the vegetation recovery area in the southern region was significantly larger than that in the northern region.About 50.99%of the plateau showed dominant climate-driven effects of temperature,precipitation,and wind speed on kNDVI change.Residual analysis showed that climate change and human activities together contributed to 94.79%of the areas with vegetation improvement.Appropriate human activities promoted the recovery of local vegetation,and climate change inhibited vegetation growth in the northern part of the Mongolian Plateau.This study provides scientific data for understanding the regional ecological environment status and future changes and developing effective ecological protection measures on the Mongolian Plateau.

Key words

kernel normalized difference vegetation index(kNDVI)/human activities/climate change/partial correlation analysis/composite correlation analysis/residual analysis/Mongolian Plateau

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基金项目

National Key Research and Development Program on Enhancement of Soil and Water Ecological Security and Guarantee Technology (2023YFF130420103)

Three North Project of Xinhua Forestry Highland Demonstration Science and Technology Construction Project()

Technology and Demonstration of Near-Natural Modification of Artificial Protective Forest Structures and Enhancement of Soil(2023YFF1305201)

Multidimensional Coupled Soilsurfacegroundwater Hydrological Processes and Vegetation Regulation Mechanism in Loess Area of (U2243202)

Hot Tracking Program of Beijing Forestry University"Planting a Billion Trees"Program and China-Mongolia Cooperation on Deser(2023BLRD04)

Research on Ecological Photovoltaic Vegetation Configuration Model and Restoration Technology(AMKJ2023-17)

出版年

2024

干旱区科学

中国科学院新疆生态与地理研究所,科学出版社

干旱区科学

CSTPCDCSCD

影响因子：1.743

ISSN：1674-6767

参考文献量2

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