Estimation of water erosion and sedimentation content in Ala region of Semnan using PSIAC method

Subject Areas : forest

nahid alipour ¹ , فاطمه Farzanehpey ² , علی torabi ³ , سمیرا Bakhshinia ⁴ , طیبه Mesbah Zadeh ⁵ , سوسن Salagegheh ⁶

1 - دانشجوی کارشناسی ارشد مدیریت مناطق بیابانی، دانشکده منابع طبیعی دانشگاه تهران، کرج، ایران
2 - دانشجوی کارشناسی ارشد مدیریت مناطق بیابانی، دانشکده منابع طبیعی دانشگاه تهران، کرج، ایران
3 - کارشناس ارشد بیابان زدایی ، اداره کل منابع طبیعی و آبخیزداری استان سمنان، سمنان، ایران
4 - . Desert and Dry regions Management graduated, University of Semnan, Semnan, Iran
5 - استادیار دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران
6 - دانشجوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، کرج، ایران

Received: 2016-04-16 Accepted : 2016-12-13 Published : 2016-11-21

Keywords: Water Erosion, Working units, PSIAC method, Ala region of Semnan,

Abstract :

Today, soil erosion and sediment production in watershed are covered to a complicated environment, so preventing emergency of them is one of the most important conservation factors of natural resources. This research done in order to water erosion content estimation using PSIAC method in Ala region of Semnan. PSIAC method investigates the effect of 9 important factors on water erosion process which these factors measured in each working units of under studied region. Results show that waterway working unit had the most effect on water erosion process with erodibility view it located in high class. Other working units including clay lands with Kalootak with score of 48, bare lands without cover with score of 45, clay plain with salts with score of 45, Marne lands without plant cover with score of 24, residential area with score of 93, lands covered with Haloxylon with score of 22, sand dunes covered with Haloxylon with score of 16 and agriculture lands with score of 15 placed in low to partial erodibility classes respectively that respect to their scores, they placed in further priority.  

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