Increasing precipitation promoted vegetation growth in the Mongolian Plateau during 2001–2018

Frontiers in Environmental Science

Environmental Science

Keyu Bai¹  Atsushi Tsunekawa²  Yunfan Liu³  Yufei Wei³  Lixiao Peng³  Jiahao Chen³  Chuanhua Li⁴  Liangliang Li⁵  Xiaodong Wu⁶ 

[1] Alliance of Bioversity International and International Centre for Tropical Agriculture, Beijing, China;Institute of Agricultural Resources and Regional Planning of Chinese Academy of Agricultural Sciences, Beijing, China;Arid Land Research Center, Tottori University, Tottori, Japan;College of Geography and Environment Science, Northwest Normal University, Lanzhou, China;College of Geography and Environment Science, Northwest Normal University, Lanzhou, China;Arid Land Research Center, Tottori University, Tottori, Japan;College of Geography and Environment Science, Northwest Normal University, Lanzhou, China;Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China;Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China;

关键词: carbon dioxide concentration;    climate change;    gross primary production;    leaf area index;    land cover type;    arid regions;   

DOI  :  10.3389/fenvs.2023.1153601

 received in 2023-01-29, accepted in 2023-04-18,  发布年份 2023

来源: Frontiers

【 摘 要 】

Taking the Mongolian Plateau as the research area, this paper studied the vegetation growth from 2001 to 2018. We quantified the vegetation growth changes based on changes in gross primary productivity (GPP) and leaf area index (LAI) and their relationships to climate variables using correlation analysis, partial correlation analysis and multiple correlation analysis. The results showed that from 2001 to 2018 both GPP and LAI showed an increasing trend, with great heterogeneities among different areas and land cover types. The largest increase of GPP and LAI occurred in the northeast plateau with the land cover types of forest and cropland. The main driving factor of vegetation growth was precipitation, while temperature was significantly negatively correlated with vegetation growth. The CO2 concentration had a significant impact on the GPP in farmland, and the increase of solar radiation had a significant impact on tundra. Our study highlights the importance of precipitation in regulating vegetation growth in the Mongolian Plateau, challenging the prevailing views that the temperature dominates the vegetation growth in the northern ecosystems.

【 授权许可】

Unknown   
Copyright © 2023 Li, Li, Wu, Tsunekawa, Wei, Liu, Peng, Chen and Bai.