气候变化领域集成服务门户(CCPortal): Impact of transnational land acquisitions on local food security and dietary diversity

CCPortal

DOI	10.1073/pnas.2020535118
	Impact of transnational land acquisitions on local food security and dietary diversity
	Müller M.F.; Penny G.; Niles M.T.; Ricciardi V.; Chiarelli D.D.; Davis K.F.; Dell’Angelo J.; D’Odorico P.; Rosa L.; Rulli M.C.; Mueller N.D.
发表日期	2021
ISSN	00278424
卷号	118 期号:4
英文摘要	Foreign investors have acquired approximately 90 million hectares of land for agriculture over the past two decades. The effects of these investments on local food security remain unknown. While additional cropland and intensified agriculture could potentially increase crop production, preferential targeting of prime agricultural land and transitions toward export-bound crops might affect local access to nutritious foods. We test these hypotheses in a global systematic analysis of the food security implications of existing land concessions. We combine agricultural, remote sensing, and household survey data (available in 11 sub-Saharan African countries) with georeferenced information on 160 land acquisitions in 39 countries. We find that the intended changes in cultivated crop types generally imply transitions toward energy-rich, but nutrient-poor, crops that are predominantly destined for export markets. Specific impacts on food production and access vary substantially across regions. Deals likely have little effect on food security in eastern Europe and Latin America, where they predominantly occur within agricultural areas with current export-oriented crops, and where agriculture would have both expanded and intensified regardless of the land deals. This contrasts with Asia and sub-Saharan Africa, where deals are associated with both an expansion and intensification (in Asia) of crop production. Deals in these regions also shift production away from local staples and coincide with a gradually decreasing dietary diversity among the surveyed households in sub-Saharan Africa. Together, these findings point to a paradox, where land deals can simultaneously increase crop production and threaten local food security. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Agriculture; Cropland; Food systems; Land deals; Nutrition
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180895
作者单位	Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, United States; Department of Nutrition and Food Sciences, University of Vermont, Burlington, VT 05405, United States; Food Systems Program, University of Vermont, Burlington, VT 05405, United States; Institute for Resources, Environment, and Sustainability, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Civil and Environmental Engineering, Politecnico di Milano, Milano, 20133, Italy; Department of Geography and Spatial Sciences, University of Delaware, Newark, DE 19716, United States; Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19716, United States; Institute for Environmental Studies, Vrije Univeristeit Amsterdam, Amsterdam, 1081 HV, Netherlands; Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720, United States; Department of Ecosystem Science and Sustainability, Color...
推荐引用方式 GB/T 7714	Müller M.F.,Penny G.,Niles M.T.,et al. Impact of transnational land acquisitions on local food security and dietary diversity[J],2021,118(4).
APA	Müller M.F..,Penny G..,Niles M.T..,Ricciardi V..,Chiarelli D.D..,...&Mueller N.D..(2021).Impact of transnational land acquisitions on local food security and dietary diversity.Proceedings of the National Academy of Sciences of the United States of America,118(4).
MLA	Müller M.F.,et al."Impact of transnational land acquisitions on local food security and dietary diversity".Proceedings of the National Academy of Sciences of the United States of America 118.4(2021).