نتایج جستجو برای: universal soil loss equation

تعداد نتایج: 939866  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1370

حوضه آبخیز سدمخزنی شهید پارسا در جنوب شرقی شهرستان فردوس استان خراسان واق گردیده است . بااحداث این سد علاوه برآبیاری اراضی موجود، 700 هکتار از اراضی جدید پایین دست به زیر کشت می روند. عمده ترین معضل موجود در رابطه با حوضه آبخیز، وجود بار رسوب فراوان و تجمع آن در پشت مخزن سد می باشد. لذابه علت عدم وجود اطلاعات کافی از وضعیت فرسایش خاک در حوضه آبخیز، دراین رساله بررسی و مطالعه فرسایش پذیری خاک ان...

Vulnerability of soil separates to detachment by water is described as soil erodibility by Universal Soil Loss Equation which can be affected by land use change. In this study it was attempted to quantify the changes of Universal Soil Loss Equation K-factor and its soil driving factors in three land uses including rangeland, rainfed farming, and orchards in Babolrood watershed, northern Iran. S...

Journal: :Journal of Geoscience and Environment Protection 2021

Water erosion is a natural fact in the cycle of shaping earth’s landforms and most evident form of land degradation on a planetary scale (Roose & De Noni, 2004; Dautrebande Sohier, 2006; Toumi et al., 2013; Azaiez, 2020a). Its effects have largely affected rural landscape. Although it result of an ancient primeval climatic tectonic forcing, man’s footprint its intensification remains reali...

Journal: :Journal of Geoscience and Environment Protection 2021

Water erosion is a natural fact in the cycle of shaping earth’s landforms and most evident form of land degradation on a planetary scale (Roose & De Noni, 2004; Dautrebande Sohier, 2006; Toumi et al., 2013; Azaiez, 2020a). Its effects have largely affected rural landscape. Although it result of an ancient primeval climatic tectonic forcing, man’s footprint its intensification remains reali...

2012
Sujata Biswas

Soil erosion is one of the most critical environmental hazards of recent times. A large area suffers from soil erosion, which in turn, reduces productivity. Methods such as the Universal Soil Loss Equation or Revised Universal Soil Loss Equation are widely used for the estimation of soil erosion from catchment areas. The paper deals with the estimation of soil erosion using Universal Soil Loss ...

The first step to controlling soil loss, is estimating of soil erosion amount. Universal soil loss Equation is One of the ways is widely used to estimate erosion, in which the absence of long term data. Effective force in the development of various forms of erosion is the power erosivity of runoff and rainfall and are expressed in erosivity index. This study aimed to evaluate the erosivity Inde...

Ecosystem services are benefits that people obtain from ecosystems. Soil retention is one of the most important ecosystem services. The capacity of ecosystem to maintain soil can be estimated by quantifying this services. In this study, version 3.0.0 of the InVEST software was used to map this ecosystem service in the eastern part of Gorgan-Rud watershed. The InVEST model employs the Universal ...

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