气候变化领域集成服务门户(CCPortal): Revegetation in China's Loess Plateau is approaching sustainable water resource limits

CCPortal

DOI	10.1038/NCLIMATE3092
	Revegetation in China's Loess Plateau is approaching sustainable water resource limits
	Feng, Xiaoming; Fu, Bojie; Piao, Shilong; Wang, Shuai; Ciais, Philippe; Zeng, Zhenzhong; Lu, Yihe; Zeng, Yuan; Li, Yue; Jiang, Xiaohui; Wu, Bingfang
通讯作者	Fu, BJ (通讯作者)
发表日期	2016
ISSN	1758-678X
EISSN	1758-6798
起始页码	1019
结束页码	+
卷号	6 期号:11
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.
关键词	VEGETATION GREENING TREND CARBON CO2 CLIMATE ECOSYSTEM IMPACT AFFORESTATION CONSERVATION EVAPORATION DYNAMICS
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000389428300016
来源期刊	NATURE CLIMATE CHANGE
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/258862
推荐引用方式 GB/T 7714	Feng, Xiaoming,Fu, Bojie,Piao, Shilong,et al. Revegetation in China's Loess Plateau is approaching sustainable water resource limits[J]. 中国科学院青藏高原研究所,2016,6(11).
APA	Feng, Xiaoming.,Fu, Bojie.,Piao, Shilong.,Wang, Shuai.,Ciais, Philippe.,...&Wu, Bingfang.(2016).Revegetation in China's Loess Plateau is approaching sustainable water resource limits.NATURE CLIMATE CHANGE,6(11).
MLA	Feng, Xiaoming,et al."Revegetation in China's Loess Plateau is approaching sustainable water resource limits".NATURE CLIMATE CHANGE 6.11(2016).