气候变化领域集成服务门户(CCPortal): Grassland restoration reduces water yield in the headstream region of Yangtze River

CCPortal

DOI	10.1038/s41598-017-02413-9
	Grassland restoration reduces water yield in the headstream region of Yangtze River
	Li, Jia; Liu, Dan; Wang, Tao; Li, Yingnian; Wang, Shiping; Yang, Yuting; Wang, Xiaoyi; Guo, Hui; Peng, Shushi; Ding, Jinzhi; Shen, Miaogen; Wang, Lei
通讯作者	Wang, T (通讯作者)
发表日期	2017
ISSN	2045-2322
卷号	7
英文摘要	Large-scale ecological restoration programs are considered as one of the key strategies to enhance ecosystem services. The Headstream region of Yangtze River (HYZR), which is claimed to be China's Water Tower but witnessed the rapid grassland deterioration during 1970s-2000, has seen a series of grassland restoration programs since 2000. But few studies have thoroughly estimated the hydrological effect of this recent grassland restoration. Here we show that restoration significantly reduces growing-season water yield coefficient (WYC) from 0.37 +/- 0.07 during 1982-1999 to 0.24 +/- 0.07 during 2000-2012. Increased evapotranspiration (ET) is identified as the main driver for the observed decline in WYC. After factoring out climate change effects, vegetation restoration reduces streamflow by 9.75 +/- 0.48 mm from the period 1982-1999 to the period 2000-2012, amounting to 16.4 +/- 0. 80% of climatological growing-season streamflow. In contrary to water yield, restoration is conducive to soil water retention-an argument that is supported by long-term in-situ grazing exclusion experiment. Grassland restoration therefore improves local soil water conditions but undercuts gain in downstream water resources associated with precipitation increases.
关键词	3-RIVER HEADWATERS REGION TIBETAN PLATEAU INTERANNUAL VARIABILITY ALPINE GRASSLAND CLIMATE-CHANGE LAND-COVER MOISTURE CHINA FORESTS IMPACT
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000401614900020
来源期刊	SCIENTIFIC REPORTS
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/259085
推荐引用方式 GB/T 7714	Li, Jia,Liu, Dan,Wang, Tao,et al. Grassland restoration reduces water yield in the headstream region of Yangtze River[J]. 中国科学院青藏高原研究所,2017,7.
APA	Li, Jia.,Liu, Dan.,Wang, Tao.,Li, Yingnian.,Wang, Shiping.,...&Wang, Lei.(2017).Grassland restoration reduces water yield in the headstream region of Yangtze River.SCIENTIFIC REPORTS,7.
MLA	Li, Jia,et al."Grassland restoration reduces water yield in the headstream region of Yangtze River".SCIENTIFIC REPORTS 7(2017).