Recent Water Constraints Mediate the Dominance of Climate and Atmospheric CO<sub>2</sub> on Vegetation Growth Across China - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Earth's Future Année : 2024

Recent Water Constraints Mediate the Dominance of Climate and Atmospheric CO2 on Vegetation Growth Across China

Yang Song
Josep Penuelas
Songhan Wang
Yao Zhang
Pierre Gentine
Matthew F Mccabe
Lixin Wang
Xing Li
Fei Li
Xiaoping Wang
Zhenong Jin
Chaoyang Wu
Xiuliang Jin

Résumé

Abstract Multiple lines of evidence confirm a widespread increase in vegetation growth across China over the past few decades. The relationship between vegetation growth and water availability is thought to be becoming stronger under climate change, that is, water constraints on vegetation growth have been increasing. However, our understanding of how water constraints have influenced these vegetation greening trends, especially those climate change‐driven ones, remains limited. Here, we conduct a comprehensive evaluation of recent water constraints and their implications for vegetation growth in China between 1982 and 2015. By analyzing the spatiotemporal patterns of the relationship between vegetation growth and water availability, we reveal recent water constraints and their changes hidden within an overall greening trend in China. Further analysis demonstrates that two climate change‐related categories, defined broadly as “climate” (e.g., air temperature, precipitation, and so on) and “CO 2 ” (i.e., atmospheric carbon dioxide), have exerted varying levels of importance in regulating vegetation growth across different water constraints. With increasing water constraints, the proportion of the climate‐dominated area has significantly risen, while that of the CO 2 ‐dominated area has sharply declined. Our findings highlight that water constraints can mediate the dominance of climate and atmospheric CO 2 on vegetation growth. This has the great potential to exacerbate the uncertainty surrounding current and future sustainable vegetation greening trends.
Fichier principal
Vignette du fichier
Earth s Future - 2024 - Song - Recent Water Constraints Mediate the Dominance of Climate and Atmospheric CO2 on Vegetation(1).pdf (3.07 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04621553 , version 1 (24-06-2024)

Identifiants

Citer

Yang Song, Josep Penuelas, Philippe Ciais, Songhan Wang, Yao Zhang, et al.. Recent Water Constraints Mediate the Dominance of Climate and Atmospheric CO2 on Vegetation Growth Across China. Earth's Future, 2024, 12 (6), ⟨10.1029/2023ef004395⟩. ⟨hal-04621553⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More