期刊名称：International Journal of Fundamental and Applied Sciences
印刷版ISSN：2278-1404
出版年度：2012
卷号：1
期号：3
页码：61-66
出版社：BioMedAsia
摘要：Background and Aim: In this study, morphometric analysis and prioritization of the seven mini watersheds of Rongli watershed of East district in Sikkim state, India is carried using Remote Sensing and Geographical Information System (GIS) techniques. Methods :The morphometric parameters considered for analysis are stream length, bifurcation ratio, drainage density, stream frequency, texture ratio, form factor, circulatory ratio, elongation ratio and compactness constant. Rongli watershed has a dendritic drainage pattern. Results: The highest bifurcation ratio among all the mini watersheds is 5.30 which indicate a strong structural control on the drainage. The maximum value of circularity ratio is 0.697 for the mini watershed 3A1B2C2c. The mini watershed 3A1B2C3a has the highest elongation ratio i.e. 0.763. The form factor values are in range of 0.37 to 0.46. The compound parameter values are calculated and prioritization rating of seven mini watersheds in Rongli watershed is carried out. The mini watershed with the lowest compound parameter value is given the highest priority. The mini watershed 3A1B2C2c has a minimum compound parameter value of 2.25 is likely to be subjected to maximum soil erosion hence it should be provided with immediate soil conservation measures.
关键词：Morphometric analysis; mini watershed; prioritization; Remote Sensing; Rongli watershed
