气候变化领域集成服务门户(CCPortal): Irrigated areas drive irrigation water withdrawals

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DOI	10.1038/s41467-021-24508-8
	Irrigated areas drive irrigation water withdrawals
	Puy A.; Borgonovo E.; Lo Piano S.; Levin S.A.; Saltelli A.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	A sustainable management of global freshwater resources requires reliable estimates of the water demanded by irrigated agriculture. This has been attempted by the Food and Agriculture Organization (FAO) through country surveys and censuses, or through Global Models, which compute irrigation water withdrawals with sub-models on crop types and calendars, evapotranspiration, irrigation efficiencies, weather data and irrigated areas, among others. Here we demonstrate that these strategies err on the side of excess complexity, as the values reported by FAO and outputted by Global Models are largely conditioned by irrigated areas and their uncertainty. Modelling irrigation water withdrawals as a function of irrigated areas yields almost the same results in a much parsimonious way, while permitting the exploration of all model uncertainties. Our work offers a robust and more transparent approach to estimate one of the most important indicators guiding our policies on water security worldwide. © 2021, The Author(s).
语种	英语
scopus关键词	alternative agriculture; complexity; estimation method; evapotranspiration; irrigation system; numerical model; policy making; water supply; Article; crop production; evapotranspiration; irrigation (agriculture); sensitivity analysis; sustainable agriculture; uncertainty; water supply; weather
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251377
作者单位	Department of Ecology and Evolutionary Biology and High Meadows Environmental Institute, Princeton UniversityNJ, United States; Centre for the Study of the Sciences and the Humanities (SVT), University of Bergen, Bergen, Norway; Department of Decision Sciences and BIDSA, Boconi University, Milan, Italy; School of the Built Environment, University of Reading, Reading, United Kingdom; Open Evidence Research, Universitat Oberta de Catalunya (UOC), Barcelona, Spain
推荐引用方式 GB/T 7714	Puy A.,Borgonovo E.,Lo Piano S.,et al. Irrigated areas drive irrigation water withdrawals[J],2021,12(1).
APA	Puy A.,Borgonovo E.,Lo Piano S.,Levin S.A.,&Saltelli A..(2021).Irrigated areas drive irrigation water withdrawals.Nature Communications,12(1).
MLA	Puy A.,et al."Irrigated areas drive irrigation water withdrawals".Nature Communications 12.1(2021).