Evaluation of sediment yield in alteration zones and Tange Bostanak watershed formations
Abstract:
Sediment yield production is now one of the most important environmental problems of humanity has become. So identify areas of Sediment productive is the most important examples of soil management in order to optimum utilization and decrease it. The aim of this study is to identify alteration zones, providing information layer deposition coefficient and Prioritization geological formations in this zones, as well as Tange Bostanak in terms of watershed sediment yield. For this purpose, using the pixel and subpixel methods and are assigned commision, ommision, the user precision, accuracy producer, the overall accuracy and Kappa alteration zones were identified and then using CSY model and GIS Capabilities that was prepared to determine Sedimentation coefficient pixel by pixel in the region . The results showed that the SFF method is suitable for mapping alteration zones. Propylitic zone in the basin with 46/278 square kilometers area is the highest distribution. The results showed the Gurpi formation despite 2/04 kilometers of surface area of 80/73 square kilometer basin and the relative importance has the Most role and Razak formation with 875/3area, with small coefficients are minimal role in the production sediment basin. Asmari formation are arranged with a distribution of 61% from the fourth priority area in terms of the rate of deposition. The results showed that the erosion potential in the catchment basin of the East and the West increased to the center and the north and north-west to the south and southeast is reduced. The biggest sediment yield (3/54-8/91) can be seen in the central, West and Northwest region.
Language:
Persian
Published:
Journal of Extension and Development of Watershed Managment, Volume:5 Issue:17, 2017
Page:
41
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