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Title

GULLIES CATEGORIZATION BASED ON MORPHOMETERIC CHARACTERISTIC USING MULTIVARIATE TECHNIQUE (CASE STUDY: FIROUZKOLA, NOUSHAHR)

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 Start Page 29 | End Page 40

Abstract

 Gullies, as one of the WATER EROSION’s form, are serious and minatory factor of environmental equilibrium and its sustainability. Study area in this research is Firouzkola cathment where located in KOJOUR district of Nowshar county of Mazandaran province. GULLY morphometric data, using with survey of cross section of GULLY, measurement of depth and width in different sections, and slope of GULLY bed are obtained via field study. The data analysis was done using principal canonic analysis (PCA). The PCA result showed that total variance of axes (97.95%) has justified all variation of factors along with these axes. The evaluation exhibits that factor number one, as the most justification (46.616%), has maximum correlation to depth and rate of width to depth. The factors number two and three have justified the whole variance with 29.466 and 23.328 percentages, respectively. Correlation coefficient of axes with factors showed that width to the second axis (0.917), depth to the first axis (0.955), slope to the third axis (-0.890), and proportion of width and depth to the first axis (-0.895) have significantly correlated. In order to gullies sorting in this area, therefore, depth and rate of width to depth have preferred and have the most influence on ordination of gullies.

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