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

Autor: Chuanhua Li, Liangliang Li, Xiaodong Wu, Atsushi Tsunekawa, Yufei Wei, Yunfan Liu, Lixiao Peng, Jiahao Chen, Keyu Bai
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Environmental Science, Vol 11 (2023)
Druh dokumentu: article
ISSN: 2296-665X
DOI: 10.3389/fenvs.2023.1153601
Popis: 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.
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