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题名: Grassland restoration reduces water yield in the headstream region of Yangtze River
作者: Li, Jia1, 2; Liu, Dan2; Wang, Tao1, 2; Li, Yingnian3, 4; Wang, Shiping1, 2; Yang, Yuting5; Wang, Xiaoyi2; Guo, Hui2; Peng, Shushi6; Ding, Jinzhi2; Shen, Miaogen1, 2; Wang, Lei1, 2
刊名: SCIENTIFIC REPORTS
出版日期: 2017-05-19
卷号: 7
DOI: 10.1038/s41598-017-02413-9
文章类型: Article
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.
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: 3-RIVER HEADWATERS REGION ; TIBETAN PLATEAU ; INTERANNUAL VARIABILITY ; ALPINE GRASSLAND ; CLIMATE-CHANGE ; LAND-COVER ; MOISTURE ; CHINA ; FORESTS ; IMPACT
收录类别: SCI
项目资助者: Strategic Priority Research Program (B) of the Chinese Academy of Sciences(XDB03030404 ; National Natural Science Foundation of China(41530528) ; XDB03030502)
语种: 英语
WOS记录号: WOS:000401614900020
Citation statistics:
内容类型: 期刊论文
URI标识: http://210.75.249.4/handle/363003/7088
Appears in Collections:中国科学院西北高原生物研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810001, Peoples R China
4.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China
5.CSIRO Land & Water, Canberra, ACT, Australia
6.Univ Versailles St Quentin En Yvelines, CNRS, Commissariat Energie Atom, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France
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