Ethiopia Nile Basin Climate Change Adaptation Dataset

The household survey was carried out in the Nile River Basin in Ethiopia. The household sampling frame in Ethiopia was developed to ensure representation for the Nile River Basin at the woreda (district) level regarding level of rainfall patterns in terms of both annual total and variation; the four classes of traditionally defined agro-ecological zones (AEZs) found in the basin; vulnerability of food production systems (through the proxy of frequency of food aid in the past ten years); and irrigation prevalence. All data used for the sample frame is from the Atlas of the Ethiopian Rural Economy (Benson et al., 2006). Each woreda was classified based on : agroecological zone (Kolla, Weynadega, Dega, and Bereha), the percent of cultivated land under irrigation (no data, 0-2%, 2-4%, 4-8%, and 8% or greater), average annual rainfall (0-854mm, 854-1133mm, 1133-1413mm, 1413-1692mm, 1692mm or greater), rainfall variability (coefficient of variation for annual rainfall), and vulnerability (number of years of food aid received in the past 10 years). Twenty woredas were selected such that across each of the above dimensions the proportion falling into each class for the sample matched as closely as possible the proportions for the entire Ethiopian Nile basin. Peasant associations (administrative units lower than districts) were also purposely selected to include households that irrigate their farms. One peasant association was selected from every woreda for a total of 20 peasant associations. Random sampling was used in selecting 50 households from each peasant administration within the 20 woredas. Thus, the final dataset contains 1,000 observations from 20 woredas in 5 regional states in Ethiopia (Tigray, Amhara, Oromiya, Benishangul Gumuz, and Southern Nations Nationalities and Peoples (SNNP)). The related South Africa Limpopo Basin Climate Change Adaptation dataset is also available from IFPRI's website at www.ifpri.org/dataset/south-africa-limpopo-basin-climate-change-adaptation-dataset.

本家庭调查于埃塞俄比亚尼罗河流域开展。埃塞俄比亚的家庭抽样框构建工作，旨在确保尼罗河流域在沃列达（woreda，即区级行政单位）层面具备充分代表性，覆盖以下维度：年降雨总量与波动特征的降雨格局、流域内四类传统定义的农业生态区（agro-ecological zones, AEZs）、粮食生产系统脆弱性（以过去十年粮食援助频次作为代理指标）以及灌溉普及情况。用于构建抽样框的所有数据均来自《埃塞俄比亚农村经济地图集》（Benson等，2006）。

每个沃列达依据以下维度进行分类：农业生态区（分为科拉Kolla、韦纳代加Weynadega、德加Dega与贝雷哈Bereha四类）、灌溉耕地占比（无数据、0-2%、2-4%、4-8%及8%及以上）、年平均降雨量（0-854mm、854-1133mm、1133-1413mm、1413-1692mm及1692mm及以上）、降雨变异性（年降雨量变异系数）以及脆弱性（过去十年获得粮食援助的年数）。

最终选取20个沃列达，使样本在上述各维度下各类别的占比尽可能贴合埃塞俄比亚尼罗河流域整体的对应占比。同时采用目的性抽样选取农民协会（区级以下行政单元），纳入拥有农田灌溉行为的家庭。每个沃列达选取1个农民协会，共计20个。在这20个沃列达中，从每个农民协会内随机抽取50户家庭。因此，本最终数据集共包含1000条观测样本，覆盖埃塞俄比亚5个区域州的20个沃列达，分别为提格雷（Tigray）、阿姆哈拉（Amhara）、奥罗米亚（Oromiya）、本尚古勒-古马兹（Benishangul Gumuz）以及南方各族州（Southern Nations Nationalities and Peoples, SNNP）。

相关的南非林波波流域气候变化适应数据集也可从国际粮食政策研究所（IFPRI）官网获取，网址为www.ifpri.org/dataset/south-africa-limpopo-basin-climate-change-adaptation-dataset。