Divergent hydrological response to large-scale afforestation and vegetation greening in China

Science Advances
Yue LiLiming Zhou

Abstract

China has experienced substantial changes in vegetation cover, with a 10% increase in the leaf area index and an ~41.5 million-hectare increase in forest area since the 1980s. Earlier studies have suggested that increases in leaf area and tree cover have led to a decline in soil moisture and runoff due to increased evapotranspiration (ET), especially in dry regions of China. However, those studies often ignored precipitation responses to vegetation increases, which could offset some of the negative impact on soil moisture by increased ET. We investigated 30-year vegetation impacts on regional hydrology by allowing for vegetation-induced changes in precipitation using a coupled land-atmosphere global climate model, with a higher spatial resolution zoomed grid over China. We found high spatial heterogeneity in the vegetation impacts on key hydrological variables across China. In North and Southeast China, the increased precipitation from vegetation greening and the increased forest area, although statistically insignificant, supplied enough water to cancel out enhanced ET, resulting in weak impact on soil moisture. In Southwest China, however, the increase in vegetation cover significantly reduced soil moisture while precipitatio...Continue Reading

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Citations

Jan 9, 2020·Nature Communications·Xiaowei TongRasmus Fensholt
Aug 15, 2020·Advanced Materials·Upamanyu RayTeng Li
Dec 8, 2020·ChemSusChem·Mikhail Yu BalakshinThomas Rosenau
Nov 24, 2020·The Science of the Total Environment·Hong Wang, Fubao Sun
Dec 24, 2018·The Science of the Total Environment·Huihui Feng, Bin Zou
Mar 2, 2021·Advanced Science·Barbara Blanco-FernandezJoão F Mano
Mar 20, 2021·The Science of the Total Environment·Xutong WuJianguo Liu
May 10, 2021·Journal of Environmental Management·Kun YangLei Zhao
May 26, 2021·The Science of the Total Environment·Shanshan YangYuejing Rong
Nov 22, 2021·The Science of the Total Environment·Tingxiang LiuShizhuo Liu

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Software Mentioned

SCE
ORganizing Carbon and Hydrology in Dynamic EcosystEms ( ORCHID...
CTL
ORCHIDEE
GLEAM
LMDZOR
MATLAB
IPSLCM

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