气候变化领域集成服务门户(CCPortal): Global irrigation contribution to wheat and maize yield

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DOI	10.1038/s41467-021-21498-5
	Global irrigation contribution to wheat and maize yield
	Wang X.; Müller C.; Elliot J.; Mueller N.D.; Ciais P.; Jägermeyr J.; Gerber J.; Dumas P.; Wang C.; Yang H.; Li L.; Deryng D.; Folberth C.; Liu W.; Makowski D.; Olin S.; Pugh T.A.M.; Reddy A.; Schmid E.; Jeong S.; Zhou F.; Piao S.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Irrigation is the largest sector of human water use and an important option for increasing crop production and reducing drought impacts. However, the potential for irrigation to contribute to global crop yields remains uncertain. Here, we quantify this contribution for wheat and maize at global scale by developing a Bayesian framework integrating empirical estimates and gridded global crop models on new maps of the relative difference between attainable rainfed and irrigated yield (ΔY). At global scale, ΔY is 34 ± 9% for wheat and 22 ± 13% for maize, with large spatial differences driven more by patterns of precipitation than that of evaporative demand. Comparing irrigation demands with renewable water supply, we find 30–47% of contemporary rainfed agriculture of wheat and maize cannot achieve yield gap closure utilizing current river discharge, unless more water diversion projects are set in place, putting into question the potential of irrigation to mitigate climate change impacts. © 2021, The Author(s).
语种	英语
scopus关键词	Bayesian analysis; crop production; crop yield; drought; irrigation system; maize; rainfed agriculture; river discharge; wheat; Article; climate change; comparative study; controlled study; cropland; evapotranspiration; irrigation (agriculture); latitude; maize; nonhuman; pest control; river basin; seasonal variation; summer; water supply; wheat
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/250764
作者单位	Sino-French Institute of Earth System Sciences, Peking University, Beijing, 100871, China; Potsdam Institute for Climate Impact Research, Potsdam, 14473, Germany; University of Chicago and ANL Computation Institute, Chicago, IL 60637, United States; Columbia University Center for Climate Systems Research, New York, NY 10025, United States; Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, United States; Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, United States; Laboratoire des Sciences du Climat et de l’Environnement, CEA CNRS UVSQ Orme des Merisiers, Gif-sur-Yvette, 91191, France; Institute on the Environment, University of Minnesota, St. Paul, MN 55108, United States; Centre International de Recherche sur l’Environnement et le Développement, Nogent sur Marne, 94130, France; Laboratoire de Météorologie Dynamique, Université Pierre et Marie Curie, Paris, 75005, France; Climate Analytics, Berlin, 10969, Germany; Depart...
推荐引用方式 GB/T 7714	Wang X.,Müller C.,Elliot J.,et al. Global irrigation contribution to wheat and maize yield[J],2021,12(1).
APA	Wang X..,Müller C..,Elliot J..,Mueller N.D..,Ciais P..,...&Piao S..(2021).Global irrigation contribution to wheat and maize yield.Nature Communications,12(1).
MLA	Wang X.,et al."Global irrigation contribution to wheat and maize yield".Nature Communications 12.1(2021).