DOI: 10.1111/gcb.14158
Scopus记录号: 2-s2.0-85049529467
论文题名: Agricultural diversification as an important strategy for achieving food security in Africa
作者: Waha K. ; van Wijk M.T. ; Fritz S. ; See L. ; Thornton P.K. ; Wichern J. ; Herrero M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 8 起始页码: 3390
结束页码: 3400
语种: 英语
英文关键词: coefficient of variation
; crop production
; farming diversity
; food availability
; livestock production
Scopus关键词: agricultural diversification
; agricultural policy
; agricultural research
; alternative agriculture
; climate change
; climate effect
; consumption behavior
; crop production
; food availability
; food security
; livestock farming
; precipitation assessment
; rainfall
; Africa
英文摘要: Farmers in Africa have long adapted to climatic and other risks by diversifying their farming activities. Using a multi-scale approach, we explore the relationship between farming diversity and food security and the diversification potential of African agriculture and its limits on the household and continental scale. On the household scale, we use agricultural surveys from more than 28,000 households located in 18 African countries. In a next step, we use the relationship between rainfall, rainfall variability, and farming diversity to determine the available diversification options for farmers on the continental scale. On the household scale, we show that households with greater farming diversity are more successful in meeting their consumption needs, but only up to a certain level of diversity per ha cropland and more often if food can be purchased from off-farm income or income from farm sales. More diverse farming systems can contribute to household food security; however, the relationship is influenced by other factors, for example, the market orientation of a household, livestock ownership, nonagricultural employment opportunities, and available land resources. On the continental scale, the greatest opportunities for diversification of food crops, cash crops, and livestock are located in areas with 500–1,000 mm annual rainfall and 17%–22% rainfall variability. Forty-three percent of the African cropland lacks these opportunities at present which may hamper the ability of agricultural systems to respond to climate change. While sustainable intensification practices that increase yields have received most attention to date, our study suggests that a shift in the research and policy paradigm toward agricultural diversification options may be necessary. © 2018 The Authors Global Change Biology Published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110293
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: CSIRO Agriculture & Food, St Lucia, QLD, Australia; Livestock Systems and the Environment, International Livestock Research Institute (ILRI), Nairobi, Kenya; International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS), ILRI, Nairobi, Kenya; Plant Production Systems, Wageningen University & Research, Wageningen, Netherlands
Recommended Citation:
Waha K.,van Wijk M.T.,Fritz S.,et al. Agricultural diversification as an important strategy for achieving food security in Africa[J]. Global Change Biology,2018-01-01,24(8)