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首页> 外文期刊>Ecological Economics >The Quest for Greener Pastures: Evaluating the Livelihoods Impacts of Providing Vegetation Condition Maps to Pastoralists in Eastern Africa
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The Quest for Greener Pastures: Evaluating the Livelihoods Impacts of Providing Vegetation Condition Maps to Pastoralists in Eastern Africa

机译：寻求更环保的牧场：评估将植被状况图的生计影响到东非的牧民

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摘要

Pastoral households are faced with making migration decisions under increasing uncertainty about resource availability and limited coping strategies due to mounting socioeconomic and climatic stressors. We assess the potential of providing vegetation condition maps to support the migration decisions of pastoralists in Ethiopia and Tanzania and the impact of map usage on their herd condition and size. The maps were generated from remotely sensed data using the Normalized Difference Vegetation Index (NDVI) as a proxy for vegetation condition and overlain with pastoralists' preferred grazing areas. We surveyed pastoralists before maps were distributed (baseline), and approximately a year (midline), and two years (endline) after map distribution began. Map adopters in both countries reported an overwhelmingly positive experience and stated the maps were accurate and helpful. However, the use of maps for migration decisions was low in the follow-up periods, partly due to challenges in map distribution (26% and 2% in Ethiopia; and 35% and 29% in Tanzania at midline and endline respectively). Map usage was associated with improved animal condition in Tanzania, but we find no causal evidence that map usage affected herd size in the randomized controlled trial in Ethiopia.
机译：牧区家庭面临迁移决策，在增加资源可用性和有限的应对战略由于安装社会经济和气候压力源而下的不确定性。我们评估提供植被状况图的潜力，以支持埃塞俄比亚和坦桑尼亚牧民的迁移决定以及地图使用对其畜群状况和规模的影响。使用归一化差异植被指数（NDVI）作为植被状况的代理，从远程感测的数据生成地图，并覆盖着牧民的首选放牧区域。在地图分布（基线）之前，我们在地图上进行了调查的牧师，并且在地图分布开始后大约一年（中线）和两年（终端）。两国的地图采用者报告了一个压倒性的积极经验，并说了地图准确和乐于助人。然而，在后续期间使用地图的使用情况低，部分原因是地图分布的挑战（埃塞俄比亚26％和2％;分别在中线和终点中的坦桑尼亚35％和29％）。地图使用与坦桑尼亚的动物状况改善有关，但我们发现没有因果证据，即地图使用影响埃塞俄比亚随机对照试验中受访畜群大小。

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