Potential impacts of transportation infrastructure improvements to maize and cassava supply chains in Zambia

被引：2

作者：

Wang, Junren ^{[1
]}

Konar, Megan ^{[1
]}

Baylis, Kathy ^{[2
]}

Estes, Lyndon ^{[3
]}

Hadunka, Protensia ^{[4
]}

Xiong, Sitian ^{[3
]}

Caylor, Kelly ^{[2
,5
]}

机构：

[1] Univ Illinois, Civil & Environm Engn, Champaign, IL 61820 USA

[2] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA USA

[3] Clark Univ, Grad Sch Geog, Worcester, MA USA

[4] Univ Illinois, Agr & Consumer Econ Dept, Champaign, IL USA

[5] Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA USA

来源：

ENVIRONMENTAL RESEARCH: INFRASTRUCTURE AND SUSTAINABILITY | 2023年 / 3卷 / 04期

基金：

美国国家科学基金会;

关键词：

food security; supply chain; transportation; Zambia; SUB-SAHARAN AFRICA; FOOD SECURITY; YIELD GAPS; TRADE;

D O I：

10.1088/2634-4505/ad04e4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Agricultural supply chains play a crucial role in supporting food security in Africa. However, high-resolution supply chain information is often not available, which hinders our ability to determine which interventions in food supply chains would most enhance food security. In this study, we develop a high-resolution supply chain model for essential staple crops in Zambia, aiming to estimate how improvements in transportation infrastructure would impact food security. Specifically, we simulate district-level monthly consumption, trade flows, and storage for maize and cassava in Zambia. We then conduct a counterfactual case study with low transportation costs, discovering that reducing transaction costs leads to higher aggregate net agricultural revenue and aggregate net expenditure. These results indicate that transportation investments are more beneficial to suppliers than to consumers, with implications for household food security in smallholder agriculture. Our study highlights the potential for infrastructure investments to improve food security.

引用

页数：19