نتایج جستجو برای: land use

تعداد نتایج: 1819039  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

Journal: :international journal of advanced biological and biomedical research 2014
fatemeh madadian chaleshtory naser honarjoo ahmad jalalian

objective: soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure. so, this research has been done for achieving this purpose. methods: this...

Journal: :journal of agricultural science and technology 2009
f. khormali k. nabiollahi

the present study was carried out in kharkeh research station, kurdestan province, western iran to investigate the effects of the change in land use on the degradation of mol-lisols, their organic carbon content, clay mineralogy and k+ status. the study area was partly under cultivation (for over 40 years) and partly preserved as rangelands. the re-sults revealed that mollisols are the dominant...

ژورنال: علوم آب و خاک 2015
دستورانی, محمد تقی , سلطانی, محبوبه , سوزنده پور, سیده فاطمه , طالبی, علی , کریمیان, علی‌اکبر ,

Land use is one of the basic factors for controlling the hydrologic behavior of watersheds. Therefore, it is generally assumed that land use change is the cause of variation in hydrological dynamic of watersheds. In this paper, the land use effect in present and optimum conditions on sedimentation of watershed was studied using GIS and applying the HEC-HM model in Shoor-Shirin watershed in Fars...

Journal: :محیط زیست طبیعی 0
آصف درویشی دانشجوی کارشناسی ارشد محیط زیست دانشکدۀ منابع طبیعی دانشگاه صنعتی اصفهان سیما فاخران استادیار گروه محیط زیست دانشکدۀ منابع طبیعی دانشگاه صنعتی اصفهان علیرضا سفیانیان استادیار گروه محیط زیست دانشکدۀ منابع طبیعی دانشگاه صنعتی اصفهان مهدی قربانی استادیار گروه مرتع و آبخیزداری دانشکدۀ منابع طبیعی دانشگاه تهران

large scale land use/cover changes and habitat fragmentation is a major factor in the distribution and functioning of ecosystems. for analysis the relationship between land use changes and their impacts on biodiversity, land cover and land use information is needed at different scales. the main goal of this study was to quantify the land use/ cover changes in arasbaran biosphere reserve, northw...

Journal: :environmental resources research 2013
gargi chaudhuri keith clarke

land use change is driven by interaction in space and time between humans and the environment that can be captured by computer simulation models (veldkamp and verburg, 2004). in the last few decades, land use change models have played an important role in understanding the causes, mechanisms and consequences of land use dynamics. sleuth is an open source cellular automata based land use change ...

Journal: :international journal of advanced biological and biomedical research 2013
leila mosleh naser zamani-miandashti

green belt is defined as a narrow green area surrounding an urban area. shiraz green belt has been developed through 9 projects with a variety of purposes since 2005. the development of green belt is being considered in a number of iranian cities, and therefore, investigation of shiraz green belt’s purposes and challenges could contribute to an appropriate planning by decision makers. the main ...

Journal: :journal of agricultural science and technology 2012
m. hosseini a. m. ghafouri m. s. m. amin m. r. tabatabaei m. goodarzi

in recent years, changes in catchments water balance due to land use management have become the main concern of water resources authorities in iran. due to rapid population growth and land use changes, especially construction of taleghan dam, taleghan catchment has undergone rapid changes such as urban development, declining of rangelands, and deterioration of environment and erosion of soil re...

Journal: :international journal of architecture and urban development 2014
azam afsharnia

planners have regarded understanding urban use per capita since the beginning of new thinking of urban development. this was stared with its pragmatics toward primary comprehensive urban plans and became a source for urban development plans that have tried to adapt per capita and standards with country’s conditions. iran's supreme council for planning and architecture, determined standards per ...

Journal: :تحقیقات جغرافیایی 0
مجتبی روستا مدرس برنامه ریزی شهری، دانشگاه پیام نور جهرم محمدرحیم رهنما گروه جغرافیا و برنامه ریزی شهری دانشگاه فردوسی مشهد

abstract:â green spaces, especially urban gardens have been a subject of study in many countries for a long time, but the subject has been mostly overlooked in iran. therefore, this study tries to analyze the changes in land use and how we can protect green spaces (gardens) in jahrom in line with sustainable development in 1996-2006. the data in this study were collected through local investiga...

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