GIS-based approach for identification of potential rainwater harvesting sites in Arsi Zone, Central Ethiopia
GIS-based approach for identification of potential rainwater harvesting sites in Arsi Zone, Central Ethiopia
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基于 GIS 的方法识别埃塞俄比亚中部 Arsi 地区潜在的雨水收集地点
DOI：
10.1007/s40808-018-0537-7
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发表时间：
2018
影响因子：
3
通讯作者：
K. V. Suryabhagavan
中科院分区：
文献类型：
--
作者：
G. Haile;K. V. Suryabhagavan
水在满足人类基本需求、社会经济发展和生态系统服务方面发挥着至关重要的作用。埃塞俄比亚正面临农业和家庭用水短缺的压力。由于缺乏水源，Arsi地区经常面临干旱和作物歉收。采用层次分析法和模糊逻辑方法，结合地理信息系统，对研究区11层的物理特征进行综合多准则决策分析。采用土壤保持服务模型对研究区径流深度层进行估算。根据研究区域的环境、社会经济和水文地质特征以及现有文献进行加权。结果表明：潜在适宜性等级为不适宜5769.8 km2（27.88%）、不适宜3104.34 km2（15%）、适宜5695.42 km2（27.52%）、非常适宜4097 km2（19.8%）、极适宜2027.38 km2 (9.8%)；约束条件覆盖面积为4540.37 km2，占研究区的21.94%。本研究的结果强调了地理空间建模在评估雨水收集潜在地点中的重要性，提出了在研究区域协助规划供水设施和解决水资源短缺问题。本研究开发的模型可用于其他领域，以确定雨水收集的潜力，并将雨水整合为替代水源，以确保家庭、农业和工业用途的可用性。建议在实施前对详细的实地验证和社会经济因素进行分析，以提高其有效性。
Water plays a crucial role in fulfilling basic human needs, for socio-economic developments and for ecosystem services. Ethiopia is experiencing pressure on water shortage for agricultural and domestic uses. Arsi Zone frequently faces drought and crop failure due to lack of water sources. Eleven physical characteristics of the study area layers were adopted integrating multi criteria decision analysis, which uses analytical hierarchy processes with a fuzzy logic approach and geographical information system. Soil conservation service model was used to estimate the runoff depth layer of the study area. Weighting was made based on environmental, socio-economical and hydro-geological characteristics of the study area, and available literature. Results show that potential suitability class was not suitable with constraints 5769.8 km2 (27.88%), less suitable 3104.34 km2 (15%), suitable 5695.42 km2 (27.52%), very suitable 4097 km2 (19.8%) and extremely suitable 2027.38 km2 (9.8%). The area coverage of constraints were 4540.37 km2 (21.94%) of the study area. Outcome of this study emphasized the importance of geospatial modeling in assessing rainwater harvesting potential sites, proposed to assist in planning water facility and to address water scarcity problem in the study area. The model developed in this research can be used in other areas to determine the potential of rainwater harvesting and integrate rainwater as an alternative water source to ensure availability for domestic, agricultural and industrial uses. It is recommended that detailed ground validation and socio-economic factors should be analyzed to increase its effectiveness before implementation.
影响因子：
3.9
作者：
Ayalew, L;Yamagishi, H
通讯作者：
Yamagishi, H