Where is the Planetary Boundary for freshwater being exceeded because of livestock farming?

doi:10.1016/j.scitotenv.2020.144035

	Where is the Planetary Boundary for freshwater being exceeded because of livestock farming?
	Leng, Guoyong 1,2; Hall, Jim W.1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-03-15
卷号	760 页码:9
关键词	Livestock Water use Feed crop Global Planetary boundary
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.144035
通讯作者	Leng, Guoyong(lenggy@igsnrr.ac.cn)
英文摘要	Livestock production has significant impacts on the environment, including due to the use of water. In this study, we provide a spatially explicit estimation of livestock blue water use, by analyzing feed crop water use and livestock drinking water. For the past four decades, livestock water use has increased from 145 km(3)/year in 1971 to 270 km(3)/year in 2012 with an increasing trend of 1.36%/year. The proportion of livestock drinking water use has remained relatively stable at around 10% of total water use attributable to livestock production. Several hotspots of water use, including eastern China, northern India, US high plains, are identified in terms of the long-term averages, while South America and Central Africa show the most rapidly increasing trends. In USA, climate change is found to contribute most to the changes in water use attributable to livestock, while feed cropping intensity and land use change are the dominant driver in China and India, respectively. Though, in total, livestock water use makes a relatively modest contribution to the Planetary Boundary (PB) that has been proposed for anthropogenic water use (4000 km(3)/year), we argue that this aggregate number is not particularly meaningful, so we identify places where livestock is a major contributor to the unsustainable use of water, in northern India, part of the Middle East, Northern China and Central US. 7% of rivers where excessive water withdrawals mean that there is insufficient residual flow to sustain the aquatic environment (which we take to be the local manifestation of a PB) have been tipped over that boundary because of livestock farming, whilst in a further 34% of rivers, livestock farming on its own exceeds the water PB. Our results provide new and more geographically specific evidence about the impact that the meat industry makes on the PB for water. (C) 2020 The Authors. Published by Elsevier B.V.
资助项目	Wellcome Trust, Our Planet Our Health (Livestock, Environment and People - LEAP)[205212/Z/16/Z] ; National Natural Science Foundation of China[42077420]
WOS关键词	SURFACE-WATER ; LAND-SURFACE ; MODEL ; IRRIGATION ; IMPACT ; GROUNDWATER ; SIMULATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000607779400120
资助机构	Wellcome Trust, Our Planet Our Health (Livestock, Environment and People - LEAP) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136249]
专题	中国科学院地理科学与资源研究所
通讯作者	Leng, Guoyong
作者单位	1.Univ Oxford, Environm Change Inst, Oxford OX1 3QY, England 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Leng, Guoyong,Hall, Jim W.. Where is the Planetary Boundary for freshwater being exceeded because of livestock farming?[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,760:9.
APA	Leng, Guoyong,&Hall, Jim W..(2021).Where is the Planetary Boundary for freshwater being exceeded because of livestock farming?.SCIENCE OF THE TOTAL ENVIRONMENT,760,9.
MLA	Leng, Guoyong,et al."Where is the Planetary Boundary for freshwater being exceeded because of livestock farming?".SCIENCE OF THE TOTAL ENVIRONMENT 760(2021):9.