干旱区生态环境知识资源中心(Arid): GIS-based spatial multi-criteria approach for characterization and prioritization of micro-watersheds: a case study of semi-arid watershed, South India

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DOI	10.1007/s12518-019-00261-y
	GIS-based spatial multi-criteria approach for characterization and prioritization of micro-watersheds: a case study of semi-arid watershed, South India
	Balasubramani, K.; Gomathi, M.; Bhaskaran, G.; Kumaraswamy, K.
通讯作者	Balasubramani, K
来源期刊	APPLIED GEOMATICS
ISSN	1866-9298
EISSN	1866-928X
出版年	2019
卷号	11 期号:3 页码:289-307
英文摘要	An assessment of micro-watersheds based on topography and physical processes is always helpful in identifying suitable locations for implementing soil and water conservation measures. The present study was taken up with the objectives of characterization and prioritization of micro-watersheds using GIS-based spatial multi-criteria approach for a case study area of Andipatti watershed. In order to characterize the micro-watersheds, measurements derived from linear, areal, and relief aspects of the stream network were primarily used as indicators of topography and physical processes. To compute a comprehensive value for each micro-watershed, values of morphometric parameters viz., bifurcation ratio (Rb), drainage density (Dd), stream frequency (Fs), drainage texture (Rt), elongation ratio (Re), circularity ratio (Rc), length of overland flow (Lg), and relief ratio (Rh) were used. Further, quantitative estimation of annual average rates of soil erosion (SE) through the RUSLE method and surface runoff (SR) thorough NRSC-CN method was also integrated with micro-watersheds for ranking purposes. To normalize the rankings of each spatially distributed parameter, weights were derived through the analytical hierarchy process (AHP). Finally, the weighted rankings were summed up and all micro-watersheds are categorized into four priority classes viz. very high, high, moderate, and low. Out of 44 micro-watersheds, 16 micro-watersheds fall under very high priority class signifying the need for watershed conservation measures. Based on the priority index, suitable structural and non-structural measures are suggested to the vulnerable watersheds.
英文关键词	Stream morphometry Soil Erosion Runoff GIS AHP Watershed
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000480580200006
WOS关键词	LAND-USE ; SOIL-EROSION ; RUNOFF ESTIMATION ; DRAINAGE ; RUSLE ; MODEL ; RIVER ; INDEXES ; SYSTEMS
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333737
作者单位	[Balasubramani, K.] Cent Univ Tamil Nadu, Sch Earth Sci, Dept Geog, Thiruvarur 610005, India; [Gomathi, M.; Kumaraswamy, K.] Bharathidasan Univ, Dept Geog, Tiruchirappalli, Tamil Nadu, India; [Bhaskaran, G.] Univ Madras, Dept Geog, Chennai, Tamil Nadu, India
推荐引用方式 GB/T 7714	Balasubramani, K.,Gomathi, M.,Bhaskaran, G.,et al. GIS-based spatial multi-criteria approach for characterization and prioritization of micro-watersheds: a case study of semi-arid watershed, South India[J],2019,11(3):289-307.
APA	Balasubramani, K.,Gomathi, M.,Bhaskaran, G.,&Kumaraswamy, K..(2019).GIS-based spatial multi-criteria approach for characterization and prioritization of micro-watersheds: a case study of semi-arid watershed, South India.APPLIED GEOMATICS,11(3),289-307.
MLA	Balasubramani, K.,et al."GIS-based spatial multi-criteria approach for characterization and prioritization of micro-watersheds: a case study of semi-arid watershed, South India".APPLIED GEOMATICS 11.3(2019):289-307.