نتایج جستجو برای: in the universal soil loss equation usle
تعداد نتایج: 21291602 فیلتر نتایج به سال:
A model was developed for estimating average annual soil loss by water on hillslope for cropland, which is called Chines Soil Loss Equation (CSLE). Six factors causing soil loss were evaluated based on soil loss data collected from experiment stations covering most regions of China and modified to the scale of Chinese unit plot defined. The model uses an empirical multiplicative equation, A=RKL...
درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...
This study aimed to assess the erosion hazard level in Wairutung Watershed. The land unit this was generated from overlaying use maps, slope and soil types maps. class of vulnerability determined based on sum parameters' rating results using a computer-based Geographic Information System (GIS) with ArcGIS program, which integrated Universal Soil Loss Equation (USLE) model. indicated division 4 ...
Soil erosion is a major factor leading to dams’ siltation and reducing their storage capacity. This study mapped the hot spots of soil areas predict erosion/siltation in Ghiss basin/dam (northeastern Morocco). In this context, various data has been prepared geographical information system for estimation by integrating universal loss equation (USLE). The result revealed that rate ranges between0...
Abstract This article presents the identification of soil use potential for different agropastoral and forest scenarios, using an indicator erosion susceptibility from spatialized Universal Soil Loss Equation (USLE). All USLE factors were ArcGis 10.5 software, case study Cachoeira Cinco Veados Watershed-RS. To determine R factor, we used Cassol et al. 2007 equation a 33-year series rain data si...
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
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