非洲四个城市地区的循环生物经济实践及其与家庭粮食安全的关系

Haruna Sekabira, S. Feleke, Victor Manyong, Leonhard Späth, P. Krütli, Guy Simbeko, Bernard Vanlauwe, Johan Six
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引用次数: 1

摘要

联合国 2030 年议程的目标之一是确保可持续消费和生产模式,实现这一目标需要在全球粮食系统中大规模部署可持续资源利用模式。有人提出了资源利用的循环生物经济(CBE)模式,以便在农业生产中重新利用有机废物,加强粮食安全。然而,尽管最近在撒哈拉以南非洲(SSA)提出了一些建立 CBE 的倡议,但专门用于了解 CBE 实践与粮食安全之间关系的科学研究却少之又少。本研究利用来自刚果民主共和国、埃塞俄比亚、卢旺达和南非的 777 个小农家庭的数据,研究了三种 CBE 实践(将有机废物用作堆肥、牲畜饲料和废物分类)与家庭粮食安全之间的关联。采用不同的回归和倾向得分匹配模型(PSM)。结果显示,在使用 CBE 实践的家庭中,使用 CBE 实践更有可能增加 0.203 分的粮食不安全获得率(HFIAP)、1.283 分的粮食不安全获得量表(HFIAS-score)和 0.277 分的家庭膳食多样性得分(HDDS)。将有机废物用作堆肥的相关性一般为正但不显著,而废物分类的相关性显著且持续为负。因此,旨在提高家庭粮食安全的 CBE 创新可优先考虑将有机废物转化为牲畜饲料,并考虑社会经济方面的因素,如获得土地的机会、进入市场的机会、教育水平、使用手机的情况、收入和干预所在的城市地区。不过,要实现有效的废物价值化,必须事先对废物进行分类。
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Circular bioeconomy practices and their associations with household food security in four RUNRES African city regions
Achieving the United Nation’s 2030 agenda which aims, among other goals, to ensure sustainable consumption and production patterns, requires a sustainable resource use model deployed at scale across global food systems. A circular bioeconomy (CBE) model of resource use has been proposed to reuse of organic waste in agricultural production to enhance food security. However, despite several initiatives recently introduced towards establishing a CBE in sub-Saharan Africa (SSA), minimal scientific efforts have been dedicated to understanding the association of CBE practices and food security. This study use data from 777 smallholder farm households from DRC, Ethiopia, Rwanda, and South Africa, to examine associations between three CBE practices (use of organic waste as compost, as livestock feed, and sorting waste) and household food security. Using different regression and propensity score matching models (PSM). Result reveal that using CBE practices more likely adds a 0.203 score of food insecurity access prevalence (HFIAP), 1.283 food insecurity access scale (HFIAS-score) and 0.277 for household dietary diversity score (HDDS) among households using CBE practiced groups. Associations regarding using organic waste as compost are generally positive but insignificant, while those with sorting waste are significantly and consistently negative. Thus, CBE innovations aiming to enhance household food security could prioritize organic waste valorization into livestock feed consider socio economic aspects such as access to land, access to market, education level, using mobile phone, income and city regions where interventions took place. However, prior sorting of waste is necessary to enable effective waste valorization.
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