نتایج جستجو برای: soil erosion models are useful tools to predict runoff

تعداد نتایج: 11297441  

Journal: :محیط زیست طبیعی 0
علی اکبرزاده دانش آموخته کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، ایران منوچهر گرجی استادیار پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، ایران حسینقلی رفاهی استاد پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، ایران حسن روحی پور دانشیار پژوهشی بخش بیابان موسسه تحقیقات جنگلها و مراتع کشور، ایران

today's, adverse effects of off-site erosion, namely damages received from sediment, is a serious bioenvironmental problem. one of the methods for temporary soil stabilization before permanent rehabilitation of vegetation cover, especially on slopes, for mitigating of bioenvironmental contaminants, is using materials having property to cementate the dispersed particles on the soil surface....

2012
E. A. Carter

Three studies conducted in Alabama evaluated impacts associated with a clear cut harvest in three physiographic regions. Machine impacts were assessed via tabulation of soil disturbance classes, measurement of bulk density and soil strength, or a combination of the two. Soil disturbance classes were similar among all locations with untrafficked areas comprising approximately 20 percent of the h...

2017
John E. Gilley David B. Marx J. E. Gilley B. Eghball D. B. Marx

The placement of stiff‐stemmed grass hedges on the contour along a hillslope has been shown to decrease nutrient transport in runoff. This study was conducted to measure the effectiveness of a narrow grass hedge in reducing runoff nutrient transport from plots with a range of soil nutrient values. Composted beef cattle manure was applied at dry weights of 0, 68, 105, 142, and 178 Mg ha-1 to a s...

INTRODUCTION Soil erosion and its issues are among the most important environmental challenges. In many areas, soil erosion affected valuable natural resources and soil fertility. The recognition of the factors affecting runoff and soil erosion, and the determination of their issues are essential for soil and water management conducive to sustainable development. The assessment and analysi...

1999
Philippe Martin

To reduce muddy ̄ooding in northern France, where soils are typically silty and highly sensitive to crusting, it is necessary to decrease the volumes of sediment-laden runoff coming from upslope agricultural source areas. To investigate the consequences of upslope agricultural practices on downslope muddy ̄ooding, we compared the effects of no-tillage treatment (NT), light-duty mouldboard ploug...

Extended abstract 1- INTRODUCTION Soil erosion is one of the most important problems of the environment, natural resources, and agriculture in the world. Soil structure stability is the key element of soil health, the main factor in the improvement or degradation of soils, and the important point in evaluating the effects of land management and the operations practices to control soil ero...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

today, information technology and computers are indispensable tools of any profession and translation technologies have become an indispensable part of translator’s workstation. with the increasing demands for high productivity and speed as well as consistency and with the rise of new demands for translation and localization, it is necessary for translators to be familiar with market demands an...

2009
Ming Xiao M. Xiao

Compost use in landscaping and erosion control applications has become widespread. Various types of composts have been utilized on highway embankments for soil conservation and runoff reduction. Different compost materials could have different erosion control effects. The objective of this study is to investigate the erosion resistance of three commonly used composts and their effects on slope ...

اسمعلی‌عوری, اباذر, حاجی, خدیجه, مصطفی‌زاده, رئوف, نظرنژاد, حبیب,

Prioritization of critical sub-watershed is an important procedure to control runoff and erosion phenomenon and considered as effective way in management of watersheds and achieving sustainable development. The main aim of this study is assessing the soil erosion-prone areas and prioritization of 30 hydrologic response unit of Rozehchai Watershed that located in West Azerbaijan province (186.41...

2006
R. Cory Greer Joan Q. Wu Prabhakar Singh Donald K. McCool

The Palouse area of the Northwestern Wheat and Range Region suffers high erosion throughout the winter season. The excessive soil loss is a result of a combination of winter precipitation, intermittent freezing and thawing of soils, steep land slopes, and improper management practices. Soil strength is typically decreased by the cyclic freeze and thaw, particularly during the period of thawing....

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