气候变化领域集成服务门户(CCPortal): Divergent hydrological response to large-scale afforestation and vegetation greening in China

CCPortal

DOI	10.1126/sciadv.aar4182
	Divergent hydrological response to large-scale afforestation and vegetation greening in China
	Li, Yue; Piao, Shilong; Li, Laurent Z. X.; Chen, Anping; Wang, Xuhui; Ciais, Philippe; Huang, Ling; Lian, Xu; Peng, Shushi; Zeng, Zhenzhong; Wang, Kai; Zhou, Liming
通讯作者	Piao, SL (通讯作者)
发表日期	2018
ISSN	2375-2548
卷号	4 期号:5
英文摘要	China has experienced substantial changes in vegetation cover, with a 10% increase in the leaf area index and an similar to 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 precipitation was suppressed by the weakened summer monsoon. In Northeast China, the only area where forest cover declined, soil moisture was significantly reduced, by -8.1 mm decade(-1), likely because of an intensified anticyclonic circulation anomaly during summer. These results suggest that offline model simulations can overestimate the increase of soil dryness in response to afforestation in North China, if vegetation feedbacks lead to increased precipitation like in our study.
关键词	LAND-SURFACE PRECIPITATION GENERAL-CIRCULATION SOIL-MOISTURE LOESS PLATEAU WATER-BALANCE CLIMATE CARBON DEFORESTATION IMPACTS TREND
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000432440600022
来源期刊	SCIENCE ADVANCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259381
推荐引用方式 GB/T 7714	Li, Yue,Piao, Shilong,Li, Laurent Z. X.,et al. Divergent hydrological response to large-scale afforestation and vegetation greening in China[J]. 中国科学院青藏高原研究所,2018,4(5).
APA	Li, Yue.,Piao, Shilong.,Li, Laurent Z. X..,Chen, Anping.,Wang, Xuhui.,...&Zhou, Liming.(2018).Divergent hydrological response to large-scale afforestation and vegetation greening in China.SCIENCE ADVANCES,4(5).
MLA	Li, Yue,et al."Divergent hydrological response to large-scale afforestation and vegetation greening in China".SCIENCE ADVANCES 4.5(2018).