نتایج جستجو برای: climate criteria

تعداد نتایج: 425575  

Journal: :international journal of advanced biological and biomedical research 2014
mohammad ali hakimzadeh ardekani mohammad reza kousari motahareh esfandiari

knowledge of behavior climatic indexes can be help to planning future programs bahabad study area in the eastern part of the province of yazd with a hot and dry climate, high potential evapotranspiration and low rainfall has a high potential for desertification. the aim of this research is evaluation of classification intensity by imdpa model with emphasis to climate criteria. the indices inclu...

Land degradation in arid and semi-arid regions caused by climate change and human activities makes it more susceptible to desertification. The aim of this research is assessing the intensity of desertification in Roudab plain of Sabzevar city using IMDPA model. So two criteria of climate and water as the main criteria affecting desertification process were considered based on field observations...

Journal: :محیط شناسی 0
حسین نایب دانشجوی کارشناسی ارشد مهندسی محیط زیست- آب و فاضلاب، دانشکدۀ محیط زیست دانشگاه تهران علی ترابیان استادگروه مهندسی محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران ناصر مهردادی استاد گروه مهندسی محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران

introduction with increasing development of urban communities and increase of population in towns, thus the need for water is also increased in the recent years. production rate of municipal wastewater has also grown dramatically. on the other hand, increase of public awareness about the water pollution problems has followed the new and stricter environmental laws concerning wastewater discharg...

Journal: :international journal of environmental research 2015
e. sánchez-badorrey i. jalón-rojas

this paper presents a new methodology for the zoning of littoral sand barriers on the basis oftheir groundwater dynamic responses to the local mean water level (mwl) climate. the method is based onthe comparison of the characteristic scales of the horizontal drainage and recharge processes. using theboussinesq equation and basic hydro-geomorphological parameters, this methodology identifies the...

Journal: :محیط زیست طبیعی 0
سمیه حدادی نیا کارشناس ارشد محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، ایران افشین دانه کار دانشیار گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، ایران کورش عشقی استاد دانشکدۀ صنایع، دانشگاه صنعتی شریف، تهران، ایران علی اصغر درویش صفت استاد دانشکدۀ منابع طبیعی، دانشگاه تهران، تهران، ایران محمد کابلی دانشیار دانشکدۀ منابع طبیعی، دانشگاه تهران، تهران، ایران

tourism as a growing industry needs special attention in developing countries. during last decades, nature based tourism has been growing faster than other tourism fields and it seems to grow even faster. ever growing demand for nature based tourism emphasizes the necessity of a holistic planning for preserving environment against degradation. objective of this study is to present a nature base...

Journal: :Annual Review of Environment and Resources 2012

Journal: :Journal of the Human-Environment System 1997

Desertification phenomenon is not devoted to an especial climate, although its role in arid and semi-arid areas is clearer than other regions. In this research, four criterions of the wind erosion, soil, vegetation cover and climate have been considered for evaluating desertification potential and mapping of desertification intensity using to IMDPA model in ZAHAK Sistan region. Considering to e...

Journal: :Journal of biological dynamics 2017
Amy Veprauskas J M Cushing

We study a discrete time, structured population dynamic model that is motivated by recent field observations concerning certain life history strategies of colonial-nesting gulls, specifically the glaucous-winged gull (Larus glaucescens). The model focuses on mechanisms hypothesized to play key roles in a population's response to degraded environment resources, namely, increased cannibalism and ...

2013
Sang-Mook Jeon Eun-Sung Chung Yeonjoo Kim Sang-ho Lee

The goal of this study is to develop a new framework that prioritizes the best sites for treated wastewater (TWW) use considering climate change impacts. Fuzzy TOPSIS which is a kind of multi-criteria decision making techniques was introduced to reflect the uncertainty of input data and criteria weighting values. Representative concentration pathway 8.5 scenario was included into the hydrologic...

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