نتایج جستجو برای: مدل rusle
تعداد نتایج: 120377 فیلتر نتایج به سال:
Outdoor pig production (OPP) can be considered an intensive system in many areas of the Mediterranean region. The concentration rainfall winter season, OPP’s topographic and soil properties, together with continuous input food pigs’ excreta, contribute to a profound increase nutrients leaching erosion. This work aimed evaluate accuracy DRASTIC-LU index Revised Universal Soil Loss Equation (RUSL...
This paper describes multiple criteria models that can be used to assess land condition in general, and military training areas in particular. Three measures of land condition are used, namely: 1) erosion status, which is estimated based on the Revised Universal Soil Loss Equation (RUSLE), 2) percent vegetative cover, and 3) range condition. In addition, the paper also describes site-specific t...
عامل توپوگرافی مدل usle به دلیل حساسیت بالای نتایج مدل نسبت به آن و نیز به دلیل پیچیدگی اثرات آن بر فرسایش خاک به عنوان یک فاکتور مهم در مدل مذکور شناخته میشود. روش مور و ویلسون به عنوان یکی از روشهای پرکاربرد در محاسبهی عامل ls مدلهای کامپیوتری خانواده usle با استفاده از مدل رقومی ارتفاع شناخته میشود. این تحقیق با هدف تعیین مناسبترین ابعاد سلولی مدل رقومی ارتفاع در محدودهای به مساحت 7116...
پژوهش حاضر با هدف بیان راهکارهایی برای بهینهسازی کاربریها در فرایند آمایش سرزمین با بهکارگیری برنامهریزی خطی چندهدفه و حل تعارضات ایجادشده در فرایند آمایش سرزمین با نظریة بازیها، در شهرستانهای گرگان و کردکوی انجام گرفت. برای 7 کاربری کلان منطقة مورد مطالعه، ارزیابی توان چندمتغیره انجام گرفت. سپس، فرایند MOLA، برای بهینهسازی اولیه اجرا شد. در بخش آمایش سرزمین ثانویه، بهینهسازی کاربریها ...
Soil erosion by water is a major environmental problem in the developing countries in particular. It has economic, social and environmental implication due to both on-site and off-site effects. The objective of this study is to assess the effects of soil erosion by water on-site and off-site on agriculture productivity at farm level using a combination between environmental and economic approac...
Soil erosion is a severe and continuous environmental problem caused mainly by natural factors, which can be enhanced anthropogenic activities. The morphological relief with relatively steep slopes, the dense drainage network, Mediterranean climate are some of factors that render Paleochora region (South Chania, Crete, Greece) particularly prone to soil in cases intense rainfall events. In this...
Soil erosion is one of the major environmental problems in terms soil degradation Shirvan plain Republic Azerbaijan. leads to significant on- and off-site impacts such as decrease productive capacity land sedimentation. The key aspects influencing quantity mainly rely on vegetation cover, topography, type, climate. This research studies quantification under different levels data availability pl...
The revised universal soil loss equation (RUSLE), the sediment delivery distributed (SEDD) model, and ArcView GIS were used to estimate the impacts of no-till practice on soil erosion and sediment yield in Pataha Creek Watershed, a typical dryland agricultural watershed in southeastern Washington. The results showed that the average cell soil loss decreased from 11.09 to 3.10 t/ha yr for the wh...
Soil erosion by water is a widespread phenomenon throughout Europe and has the potentiality, with his on-site and off-site effects, to affect water quality, food security and floods. Despite the implementation of numerous and different models for estimating soil erosion by water in Europe, there is still a lack of harmonization of assessment methodologies. Often, different approaches result in ...
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