نتایج جستجو برای: dojag chay watershed

تعداد نتایج: 16539  

Journal: :journal of rangeland science 2011
r. talaei a. jafari ardakani f. azimi r. bayat m. parehkar

one of the main resonator factors in watershed soil erosion is inappropriateland management including conversion of pasture land to dry-land farming.unfortunately, the changes of gara su watershed usages have been very common.thus, in order to understand the influence of land use on runoff rate and soil loss, soillosses were investigated and determined under both pasture and dry-land agricultur...

A. Jafari Ardakani F. Azimi M. Parehkar R. Bayat R. Talaei

One of the main resonator factors in watershed soil erosion is inappropriateland management including conversion of pasture land to dry-land farming.Unfortunately, the changes of Gara Su watershed usages have been very common.Thus, in order to understand the influence of land use on runoff rate and soil loss, soillosses were investigated and determined under both pasture and dry-land agricultur...

Journal: :desert 2008
a. esmaili h. ahmadi s. feiznia j. ghoddoussi

soil erosion results from an interaction of several parameters, which vary in space and time. awareness ofenvironmental changes and their impact on the intensity and spatial pattern of water erosion can effectively help inrecognition of erosional reactions versus the affecting factors. the aim of this paper is to describe the development ofa methodology based on present knowledge and available ...

Journal: :محیط شناسی 0
علی قاسمی کارشناس ارشد آبخیزداری دانشکدۀ منابع طبیعی دانشگاه تهران علی سلاجقه استاد آبخیزداری دانشکدۀ منابع طبیعی دانشگاه تهران آرش ملکیان استادیار آبخیزداری دانشکدۀ منابع طبیعی دانشگاه تهران اباذر اسمعلی دانشیار آبخیزداری دانشکدۀ منابع طبیعی دانشگاه محقق اردبیلی

introduction floods are major disasters worldwide that causes serious damage to agriculture, fisheries, housing and infrastructure. they can also disrupt socio-economic activities. as the severity and frequency of flood events have considerably increased, there is a growing global concern about the need to decrease flood related fatalities and associated economic losses. just in 2010, 178 million...

Journal: :ADLFI. Archéologie de la France - Informations 2008

ژورنال: علوم آب و خاک 2018

In this research, a regression model was introduced to study the mechanisms of the formation of gullies in the Quri Chay watershed, northern Ardebil province (Moghan Plain); this was done through investigating the effective factors of geo-environment and soil characteristics on the gully erosion. For this purpose, 17 gullies were randomly assigned through field surveys. Mapping and recording th...

The dam, as one of the hydrological structures, has imposed to rural areas many debates and problems on population deployment, the type and quality of livelihoods, and how to exploit natural resources such as water and soil. Recognizing and analyzing these effects in describing the unsustainable rural development process and the necessity of its transformation with regard to the dominant positi...

1999
Christopher Kent Guy Debelle

Marianne Gizycki for their helpful comments and suggestions, Chay Fisher for his excellent research assistance and Graham Anderson for providing data. The views expressed are those of the authors and should not be attributed to the Reserve Bank of Australia.

Background: Foods have been many changes from production to tables and continuous control is necessary to maintain food safety and supply foods with good quality. The aim of this study was to evaluate the quality of some foods with high consumption in Zanjan city during the 5 years from 2009 to 2013. Methods: In a case-control descriptive study with an annually control program during 5 years f...

Journal: Desert 2008
A. Esmaili H. Ahmadi J. Ghoddoussi S. Feiznia

Soil erosion results from an interaction of several parameters, which vary in space and time. Awareness ofenvironmental changes and their impact on the intensity and spatial pattern of water erosion can effectively help inrecognition of erosional reactions versus the affecting factors. The aim of this paper is to describe the development ofa methodology based on present knowledge and available ...

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