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Sub-basins prioritization using morphometric analysis-remote sensing technique and GIS-Golestan-Iran

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Amani M., Safaviyan A.

International Letters of Natural Sciences

2015

tom 38

Sub-basins prioritization is one of the most important resolutions of development sustainability and natural resources comprehended management. In this study, 11 sub-basins of Lohender in east Golstan province about 272/63cm Prioritized using computation and morphometric analysis and using GIS and RS techniques. Erosion mode in each sub-basin specified through Sediment Yield Index approximation. In morphometric analysis, parameters like canal length, bifurcation ratio, discharge density, sub-basins shape coefficient, round coefficient, stretch coefficient and compressive coefficients were computed thus these parameters divided to two classifications: linear coefficients and figurative coefficient. In order to study annual sediment index, from fields applied maps, land coverage, slope, soil type and topographic map scale 1:50000 were used. Finally, each sub-basin Priority determined due to Sediment Yield Index (SYI) and total average of morphometric parameters. According to morphometric parameters, the BS sub-basin and according to SYI parameter, A5 sub-basin showed more critical mode and combination of both showed that B2 sub-basin showed the worst situation.

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1 International Letters of Natural Sciences

1 Amani M.

1 Safaviyan A.

1 2015

Wyniki wyszukiwania

Sub-basins prioritization using morphometric analysis-remote sensing technique and GIS-Golestan-Iran