气候变化领域集成服务门户(CCPortal): Environmental flow provision: Implications for agricultural water and land-use at the global scale

CCPortal

DOI	10.1016/j.gloenvcha.2014.10.015
	Environmental flow provision: Implications for agricultural water and land-use at the global scale
	Bonsch M.; Popp A.; Biewald A.; Rolinski S.; Schmitz C.; Weindl I.; Stevanovic M.; Högner K.; Heinke J.; Ostberg S.; Dietrich J.P.; Bodirsky B.; Lotze-Campen H.; Humpenöder F.
发表日期	2015
ISSN	0959-3780
卷号	30
英文摘要	Human activity has led to freshwater ecosystem degradation in the past and is likely to continue doing so if no appropriate protection mechanisms are implemented. One potential protection measure is the reallocation of water from human use to environmental purposes - also called environmental flows. Such reallocation may decrease the availability of irrigation water with possible adverse effects on agricultural production. In this analysis, we provide an initial quantitative estimate of how the allocation of annual volumes of water for environmental flow protection (EFP) might influence the food production system on a global scale. The application of a spatially explicit global land and water-use allocation model (MAgPIE) allows us to explore the effect of EFP on agricultural water withdrawals. We will also examine associated reactions in terms of land-use changes and agricultural intensification. Our results suggest that the implications of conserving annual volumes of water for EFP on the land-use system are moderate on an aggregate global level. Cropland expansion into unmanaged land arising from increased food demand up to 2045 is higher by a factor 5-9 than cropland expansion induced by EFP. Global forest losses associated with EFP remain below 1% of current forest area. Production reallocation and associated land-use change hotspots suggest that local effects are of more concern than aggregate cropland expansion and deforestation. © 2014 Elsevier Ltd.
英文关键词	Environmental flows; Global; Land-use; Land-water-nexus; Model; Water-use
学科领域	agricultural land; environmental gradient; freshwater ecosystem; human activity; irrigation; land use change; resource allocation; water management; water use
语种	英语
scopus关键词	agricultural land; environmental gradient; freshwater ecosystem; human activity; irrigation; land use change; resource allocation; water management; water use
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117559
作者单位	Potsdam Institute for Climate Impact Research (PIK), Telegraphenberg A 31, Potsdam, 14473, Germany; Technical University Berlin, Economics of Climate Change, Strasse des 17, Juni 145, Berlin, 10623, Germany; Humboldt University of Berlin, Unter den Linden 6, Berlin, 10099, Germany; Commonwealth Scientific and Industrial Research Organisation (CSIRO), St. Lucia, QLD 4067, Australia
推荐引用方式 GB/T 7714	Bonsch M.,Popp A.,Biewald A.,et al. Environmental flow provision: Implications for agricultural water and land-use at the global scale[J],2015,30.
APA	Bonsch M..,Popp A..,Biewald A..,Rolinski S..,Schmitz C..,...&Humpenöder F..(2015).Environmental flow provision: Implications for agricultural water and land-use at the global scale.Global Environmental Change,30.
MLA	Bonsch M.,et al."Environmental flow provision: Implications for agricultural water and land-use at the global scale".Global Environmental Change 30(2015).