G2TT
来源类型Article
规范类型其他
DOI10.1007/s11027-018-9827-7
Cropland yield divergence over Africa and its implication for mitigating food insecurity.
Luan Y; Zhu W; Cui X; Fischer G; Dawson TP; Shi P; Zhang Z
发表日期2018
出处Mitigation and Adaptation Strategies for Global Change
出版年2018
语种英语
摘要Despite globalization and the scale of international food trade, access to sufficient food remains a major challenge in Africa. The most effective way to mitigate food insecurity is to increase crop production. To answer the question that whether African countries have the capacity to mitigate food shortages by best cultivating practices observed on current cropland, in this study, we use the local net primary productivity scaling (LNS) method to evaluate the currently attainable potential yield-gap (CAYgap). The CAYgap is initially used to suggest steps towards best regional agricultural practices and provide an indicator of regional divergence of cropland productivity in each homogeneous agro-climatic zone. Results indicate that under current climatic conditions, improving each countries’ productivity to the zonal optimal level, around ~ 90% of all African countries have the capacity to mitigate their current energy shortages independently. Thus, to achieve ending hunger, possible efforts are needed which include (1) clarifying what and how socio-economic and institutional factors cause yield divergence across agro-climatic zones and establishing relevant practical policies; (2) strengthening the resilience of food access to make national food availability favors households and individuals; and (3) establishing systematically monitoring platforms on dynamics of crop yields from pixel to regional and from growth phrase to decadal scales. Furthermore, our study demonstrates the feasibility of applying satellite-derived indicators for the maximum yield achieved method to quantify and map the current cropland yield divergence by LNS method, and this method could be applied on different spatial level from regional to global scale with reasonable homogeneous zone scheme.
主题Water (WAT)
关键词Cropland yield Spatial divergence Agro-climatic homogeneous zone NDVI Food security Africa
URLhttp://pure.iiasa.ac.at/id/eprint/15492/
来源智库International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/131530
推荐引用方式
GB/T 7714
Luan Y,Zhu W,Cui X,et al. Cropland yield divergence over Africa and its implication for mitigating food insecurity.. 2018.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Luan Y]的文章
[Zhu W]的文章
[Cui X]的文章
百度学术
百度学术中相似的文章
[Luan Y]的文章
[Zhu W]的文章
[Cui X]的文章
必应学术
必应学术中相似的文章
[Luan Y]的文章
[Zhu W]的文章
[Cui X]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。