نتایج جستجو برای: erosion and sediment model in iran

تعداد نتایج: 21952910  

Journal: :مرتع و آبخیزداری 0
علی گلکاریان استادیار دانشکدة منابع طبیعی و محیط زیست دانشگاه فردوسی داود داودی مقدم دانشجوی کارشناسی ارشد آبخیزداری دانشکدة منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس سید امیر نقیبی دانشجوی کارشناسی ارشد آبخیزداری دانشکدة منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس مسعود عشقی زاده دانشجوی دکتری آبخیزداری، دانشکدة منابع طبیعی و کویرشناسی دانشگاه یزد

soil erosion is undoubtedly one of the most important problems in natural areas and has a devastating impact on grassland ecosystems. the present study was conducted to assess the ability of rangeland hydrology and erosion model for estimating sediment yield on rangeland’s hill slopes in dry regions at shahid noori paired watershed of kakhk. rhem is a mathematical, distribution and physical mod...

A. Zarei M.J. Amiri

ABSTRACT- One of the big problems today human societies are faced with is the problem of soil erosion. In this study, the "MPSIAC model" was used to estimate sediment yield and provide sediment yield map in Cachoyeh watershed. The MPSIAC method incorporates nine environmental factors that contribute to sediment yield of the watershed. These factors are: surface geology, soil, climate, runoff, t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان 1390

in iran we already use laminate tubes only in cosmetics industry. laminate tube manufacturers via using the most modern technology of the world, faced with the laminate tube market being saturated in cosmetics industry for packaging the cosmetic creams and toothpaste. but considering the great food market and therefore laminate tube features such as beautiful packaging, ease of use for the fina...

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

the outcome of this research is a practical framework for “idea generation phase of new product development process based on customer knowledge”. in continue, the mentioned framework implemented in a part of iran n.a.b market and result in segmenting and profiling this market. also, the critical new product attributes and bases of communication message and promotion campaigns extracted. we have...

Journal: Desert 2012
H. Ahmadi M. Jafari M. Nasri S. Feiznia

The problems of land degradation and soil loss are among the major problems of watersheds in Iran. For erosion andsediment estimation one can use statistical and empirical methods. For doing this, land unit map and the map of effectivefactors should be prepared. For erosion and sediment estimation one can use statistical and empirical methods. However,these empirical methods are usually time co...

Journal: :desert 2013
m. nasri s. feiznia m. jafari h. ahmadi

the problems of land degradation and soil loss are among the major problems of watersheds in iran. for erosion andsediment estimation one can use statistical and empirical methods. for doing this, land unit map and the map of effectivefactors should be prepared. for erosion and sediment estimation one can use statistical and empirical methods. however,these empirical methods are usually time co...

Journal: :environmental resources research 0
a zare gariz phd candidate, department of rangeland and watershed management, yazd university, iran a talebi associate professor, department of rangeland and watershed management, yazd university, iran

in this study, the process-based watershed model, soil and water assessment tool (swat), was used for simulating hydrology and sediment transport in the gharesou watershed and for identifying critical areas of soil erosion and water pollution. after model calibration and uncertainty analysis using sufi-2 (sequential uncertainty fitting, ver. 2) method, the outputs of the calibrated model were u...

Journal: :اکو هیدرولوژی 0
مازیار محمدی دانشجوی دکتری، گروه علوم و مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس مقدسه فلاح کارشناس ارشد آبخیزداری، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی عطااله کاویان دانشیار، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری لیلا غلامی استادیار، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری ابراهیم امیدوار استادیار، گروه مهندسی مرتع و آبخیزداری، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه کاشان

the modeling can provide a quantitative approach and consistency in the estimationsoil erosion and sediment yield by a wide range of conditions. in this study, the integration method of revised universal soil loss equation model, geographic information system and remote sensing techniques were used in order to identify the spatial distribution of soil erosion and sediment yield in the talar wat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده زبانهای خارجی 1391

the primary goal of the current project was to examine the effect of three different treatments, namely, models with explicit instruction, models with implicit instruction, and models alone on differences between the three groups of subjects in the use of the elements of argument structures in terms of toulmins (2003) model (i.e., claim, data, counterargument claim, counterargument data, rebutt...

Journal: :اکو هیدرولوژی 0
محسن خورسند دانشجوی کارشناسی ارشد، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور عبدالواحد خالدی درویشان استادیار، گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور مهدی غلامعلی فرد استادیار، گروه محیط زیست، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس، نور

the presentstudy aimed to compare the annual soil loss prediction of rusle model with the soil erosion measurements using erosion pins and plots in khamesan representative watershed, kurdistan province. for this purpose, the distributed annual soil loss was estimated by rusle model. the suspended sediment samples were then collected daily for one year (2015/7 to 2016/6) in hydrometry station at...

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