干旱区生态环境知识资源中心(Arid): Remote sensing and multi-criterion analysis for identifying suitable rainwater harvesting areas

Arid

DOI	10.1007/s11600-022-00910-8
	Remote sensing and multi-criterion analysis for identifying suitable rainwater harvesting areas
	Debebe, Yalembrhan; Otterpohl, Ralf; Islam, Zubairul
通讯作者	Debebe, Y
来源期刊	ACTA GEOPHYSICA
ISSN	1895-6572
EISSN	1895-7455
出版年	2023
卷号	71 期号:2 页码:855-872
英文摘要	Water scarcity and soil erosion are the main constraints small holder farmers are facing in Tigray, the northern most part of Ethiopia. Both very high and very low precipitation can cause a damage to agriculture which is the case in semi-arid regions like Tigray. While too little rainfall cannot support the growth of crops resulting in crop failure, the short but intense rainfall also causes a runoff thereby washing away essential soil nutrients. Installation of different micro/macro-catchment rainwater harvesting can address both water scarcity and soil erosion if they are properly designed prior to construction. This research was intended to develop a methodology for identifying suitable rainwater harvesting (rwh) sites by using weighted overlay analysis. It also utilizes Ahp (analytical hierarchy process) as effective multi-criterion decision-making tool in eastern Tigray at Kilte Awlaelo district on an area of 1001 km(2). This method was chosen because it is simple to use, cost effective, flexible and widely adopted. Physical, hydrological, climate and socio-economic aspects were taken into account during criteria selection. The result indicated four suitability classes with 8.74% highly suitable areas (85.25 km(2)), 56% suitable areas (550.75 km(2)), 30.8% moderately suitable areas (303.2 km(2)) and 4.46% less suitable areas (43.87 km(2)). The produced rwh suitability map was also validated by both ground truth on google earth pro and a field trip to the study site. In situ and ex situ rwh including bench terraces, wells, and exclosure areas were identified during the field visit that verified the suitability model. Finally, depending on weight and scale of criteria and sub-criteria that matched to each identified suitable areas, different micro-catchment and macro-catchment techniques of water harvesting are recommended. This methodology can be utilized as decision-making tool for rwh practitioners, local and foreign organizations working on soil water conservation programmes and policy-makers during their early planning stages.
英文关键词	Water scarcity Rainwater harvesting Geographic information system Site suitability Analytical hierarchy process Weighted overlay
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000857466400002
WOS关键词	GIS-BASED APPROACH ; WATER CONSERVATION ; NORTHERN ETHIOPIA ; SOIL ; TIGRAY ; RUNOFF ; SITES ; IDENTIFICATION ; SUITABILITY ; INTEGRATION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394950
推荐引用方式 GB/T 7714	Debebe, Yalembrhan,Otterpohl, Ralf,Islam, Zubairul. Remote sensing and multi-criterion analysis for identifying suitable rainwater harvesting areas[J],2023,71(2):855-872.
APA	Debebe, Yalembrhan,Otterpohl, Ralf,&Islam, Zubairul.(2023).Remote sensing and multi-criterion analysis for identifying suitable rainwater harvesting areas.ACTA GEOPHYSICA,71(2),855-872.
MLA	Debebe, Yalembrhan,et al."Remote sensing and multi-criterion analysis for identifying suitable rainwater harvesting areas".ACTA GEOPHYSICA 71.2(2023):855-872.