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学科主题: 生物科学::普通生物学
题名: Revegetation in China's Loess Plateau is approaching sustainable water resource limits
作者: Feng, XM (Feng, Xiaoming)1, 2; Fu, BJ (Fu, Bojie)1, 2; Piao, S (Piao, Shilong)3, 4; Wang, SH (Wang, Shuai)1, 2; Ciais, P (Ciais, Philippe)5; Zeng, ZZ (Zeng, Zhenzhong)3; Lu, YH (Lu, Yihe)1, 2; Zeng, Y (Zeng, Yuan)6; Li, Y (Li, Yue)3; Jiang, XH (Jiang, Xiaohui)7; Wu, BF (Wu, Bingfang)6
通讯作者: Fu, BJ
关键词: VEGETATION GREENING TREND ; CARBON ; CO2 ; ECOSYSTEM ; CLIMATE ; IMPACT ; MODEL ; SEQUESTRATION ; AFFORESTATION ; ENVIRONMENTS
刊名: NATURE CLIMATE CHANGE
发表日期: 2016
DOI: 10.1038/NCLIMATE3092
卷: 6, 期:11, 页:1019-1022
收录类别: SCI
合作性质: 国际
文章类型: Article
部门归属: 生态
英文摘要:  Revegetation of degraded ecosystems provides opportunities for carbon sequestration and bioenergy production(1,2). However, vegetation expansion inwater-limited areas creates potentially conflicting demands for water between the ecosystem and humans(3). Current understanding of these competing demands is still limited(4). Here, we study the semi-arid Loess Plateau in China, where the 'Grain to Green' large-scale revegetation programme has been in operation since 1999. As expected, we found that the new planting has caused both net primary productivity (NPP) and evapotranspiration (ET) to increase. Also the increase of ET has induced a significant (p < 0.001) decrease in the ratio of river runoff to annual precipitation across hydrological catchments. From currently revegetated areas and human water demand, we estimate a threshold of NPP of 400 +/- 5 g C m(-2) yr(-1) above which the population will suffer water shortages. NPP in this region is found to be already close to this limit. The threshold of NPP could change by 36% in the worst case of climate drying and high human withdrawals, to C 43% in the best case. Our results develop a new conceptual framework to determine the critical carbon sequestration that is sustainable in terms of both ecological and socio-economic resource demands in a coupled anthropogenic-biological system.
WOS记录号: WOS:000389428300016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7891
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China
3.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
5.UVSQ, CNRS, CEA, LSCE, F-91191 Gif Sur Yvette, France
6.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China
7.YRCC, Yellow River Inst Hydraul Res, Zhengzhou 450003, Peoples R China

Recommended Citation:
Feng, XM ,Fu, BJ ,Piao, S ,et al. Revegetation in China's Loess Plateau is approaching sustainable water resource limits[J]. NATURE CLIMATE CHANGE,2016,6(11):1019-1022.
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