نتایج جستجو برای: gis andusing rusle model in agricultural regions

تعداد نتایج: 17353537  

Journal: :Land 2021

The hilly areas of China have experienced soil erosion and are also typical land consolidation (LC) regions. Using the RUSLE model multiple regression model, this study evaluated agricultural assessed effects LC on in Lishui District, a district Ning-Zhen-Yang area. ranged from 0 to 385.77 t·ha−1·yr−1 with spatial heterogeneity due topography, cover, vegetation cover. Overall, carrying out redu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

Journal: :Rwanda Journal of Engineering, Science, Technology and Environment 2020

Journal: :مدیریت آب و آبیاری 0
محمد عظیمی حسینی دانشجوی کارشناس ارشد، گروه مهندسی آب، پردیس ابوریحان، دانشگاه تهران، پاکدشت محمودرضا بهبهانی دانشیار گروه مهندسی آبیاری و زهکشی، گروه مهندسی آب، پردیس ابوریحان، دانشگاه تهران، پاکدشت

prediction of the agricultural developmental problems has ever been one of the goals of proper agricultural development, to gain more productions from the minimum resources. the goal of this research is zoning prone area of olive cultivation with two methods: gis and genetic algorithm. also the results have been compared with the current olive cultivation areas in lorestan province and the resu...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

since its introduction in 1959, translation quality assessment (tqa) has been among the most addressed research topics in translation studies. during recent years, there has been a crucial increase on the study of tqa. various methods have come on scene. although these methods are based on scientific theories, most of them have remained at the level of theory. juliane house’s model is among tho...

2000
B. Y. Liu M. A. Nearing P. J. Shi Z. W. Jia

cients. Normalizing to a unit plot of length 22.13 m, both the USLE and RUSLE use the equation Empirical soil erosion models continue to play an important role in soil conservation planning and environmental evaluations around L 5 (l/22.13) [2] the world. The effect of hillslope length on soil loss, often termed the where L is soil loss normalized to the 22.13-m-long slope length factor, is one...

ژورنال: :مرتع و آبخیزداری 2013
جلال زندی محمود حبیب نژاد روشن کریم سلیمانی

فرسایش خاک مسئلة محیطی مهمی در حوزة آبخیز وازرود، واقع در بخش میانی مازندران، است. متأسفانه، این حوزه مانند بیشترِ حوزه‏های آبخیز کشور فاقد ایستگاه‏های اندازه‏گیری فرسایش و رسوب مجهز برای مطالعه و مدل‏بندی فرسایش خاک در سطح وسیع است. به منظور ارزیابی خطر فرسایش خاکْ مدل‏سازی فرسایش در مقیاس حوزه لازم الاجراست. در این مطالعه از مدل اصلاح شدة فرسایش خاک جهانی (rusle) همراه با سیستم اطلاعات جغرافیای...

Journal: :Land 2022

Soil degradation is a serious environmental issue in many regions of the world, and Sri Lanka not an exception. Maha Oya River Basin (MORB) one major river basins tropical Lanka, which suffers from regular soil erosion degradation. The current study was designed to estimate associated with land use changes MORB. Revised Universal Loss Equation (RUSLE) used calculating annual rates, while Geogra...

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