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How food secure are the green, rocky and middle roads: food security effects in different world development paths
Elke Stehfest; Paul Lucas; Hans van Meijl
2020-03-19
出版年2020
国家荷兰
领域气候变化 ; 资源环境
英文摘要
19-03-2020 | Artikel

The Sustainable Development Goals (SDGs) address food and nutrition security with goal number two. Food and nutrition security is a complicated issue, and understanding its future requires insights into (i) food availability, (ii) food access, (iii) food utilisation, and (iv) food stability. Not all these dimensions are covered by the SDG2 and its indicators. A unique feature of this paper is that it focuses on the first three dimensions of food security in addition to the prevalence of undernourishment (SDG indicator 2.1.1). Here we explore future food security in the absence of dedicated policies, to derive the 'policy gap' for this goal.

The internationally agreed shared socio-economic pathways (SSPs) are quantified using a computable general equilibrium model (MAGNET) coupled with an integrated assessment model (IMAGE) that enable a linkage between income and expenditures given segmented labour markets. Based on the three dimensions of food security our results showed a less optimistic outlook than based on previous studies. Food availability is projected to improve in all 5 SSP scenarios, except South Asia in SSP3 due to serious land constraints.

As a result, the number of undernourished people decreases in most scenarios, becoming increasingly concentrated in Sub-Saharan Africa and South Asia. However, undernourishment stays high in SSP4 (550 million people) and increases to over two billion people in SSP3. Food access generally improves due to higher agricultural and non-agricultural wages of unskilled workers. However, due to lock-in effects the wages of unskilled agricultural workers might decline, leading to reduced food access in SSP3, SSP4 and SSP2.

The indicator of food utilisation shows food security problems for Sub-Saharan Africa in SSP3 and SSP4. Our results indicate that food security problems remain and that effective policies are needed to achieve food security for all.

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来源平台Netherlands Environmental Assessment Agency
文献类型科技报告
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/270717
专题气候变化
资源环境科学
推荐引用方式
GB/T 7714
Elke Stehfest,Paul Lucas,Hans van Meijl. How food secure are the green, rocky and middle roads: food security effects in different world development paths,2020.
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