نتایج جستجو برای: land use changes

تعداد نتایج: 2557869  

Journal: :مرتع و آبخیزداری 0
سمانه رضوی زاده دانشجوی دکتری دانشگاه کشاورزی و منابع طبیعی ساری علی سلاجقه دانشیار دانشکدة منابع طبیعی دانشگاه تهران شهرام خلیقی سیگارودی استادیار دانشکدة منابع طبیعی دانشگاه تهران محمد جعفری استاد دانشکدة منابع طبیعی دانشگاه تهران

land use change is one of the main factors in the process of changing the regime of flood in watersheds. taleghan watershed has been subjected to many land use changes over years, which probably effects on flood characteristics of taleghan river. in present study the effects of land use change on some parameters including peak flow, volume and flood base time, in part of taleghan basin, was inv...

Journal: :desert 2008
s. bazgeer p. k. sharma r. k. mahey s. s. hundal a. sood

abstract decadal changes in land use/land cover for balachaur watershed in nawanshahar district, punjab, india were studied using black and white aerial photographs for march 1984 on approximately 1:20,000 scale and multidate geocoded false colour composites (fcc) of irs-1d liss-iii on 1:50,000 scale for march 2002, september 2002, and may 2003 and interpreted visually to prepare land use/land ...

زینی وند, حسین, حقی زاده, علی , میرزایی, سمیه ,

In this study, the ability of spatially distributed hydrological WetSpa model for simulation of suspended sediment concentration in a daily time step was investigated. Hydro-climate daily data for a period of 7 years including: precipitation, temperature, evaporation, discharge and suspended sediment and three basic basic digital maps of DEM, soil texture and land use, with the cell size of 25 ...

Journal: :آمایش سرزمین 0
امید کرمی کارشناس ارشد جنگل داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری سیدمحمّد حسینی نصر . استادیار گروه جنگل داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری حمید حمید جلیل وند دانشیار گروه جنگل داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری میرحسن میریعقوب زاده . دانشجوی دکتری آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی ساری

inappropriate patterns and drastic changes in land-use have caused the severe environmental crisis. therefore, it is necessary to accomplish any plan in relation to establishment of different activities with respect to land capabilities and land-use evaluation thought. in this study, ecological capabilities and the site selection of land uses in babolrood basin, mazandaran province were evaluat...

Journal: :پژوهش های جغرافیایی (منتشر نمی‏شود) 0
محمد رضا پورمحمدی استاد گروه جغرافیا و برنامه ریزی شهری، دانشگاه تبریز فیروز جمالی استاد گروه جغرافیا و برنامه ریزی شهری، دانشگاه تبریز اکبر اصغری زمانی دانشجوی دکتری جغرافیا و برنامه ریزی شهری، دانشگاه تبریز

the complexity of urban systems in our recent world, make it difficult to evaluation and explanation of their changes with traditional and customarily methods. in the past, remote sensing has shown an ability to detect and describe urban growth patterns at different spatial scales. with new remote sensing devices (e.g. ikonos), with innovative image processing techniques and with further develo...

Journal: :environmental resources research 0
hamidreza kamyab gorgan university of agricultural sciences and natural resources abdolrassoul salman mahiny associate professor, faculty of fisheries and environmental sciences, gorgan university of agricultural science & natural resource mohammad shahraini assistant professor, engineering & technological collage, golestan university

in this paper, landscape allocation using genetic algorithm (laga), a spatial multi-objective land use optimization software is introduced. the software helps in searching for optimal land use when multiple objectives such as suitability, area, cohesion and edge density indices are simultaneously involved. laga is a flexible and easy to use genetic algorithm-based software for optimizing the sp...

2012
Maliheh Alsadat Madanian Alireza Soffianian Sima Fakheran

Land use/cover change mapping is one of the basic tasks for environmental monitoring and management. In recent years, a variety of change detection techniques have been developed. This research compares three change detection techniques, including image differencing, image rationing, and image regression to study land use/cover changes in Falavarjan /Iran. The data sources used in this study we...

Journal: :محیط شناسی 0
فاطمه جهانی شکیب دانشجوی دکتری آمایش محیط زیست، دانشکدۀ شیلات و محیط زیست، دانشگاه گرگان بهرام ملک محمدی استادیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران احمدرضا یاوری دانشیار دانشکدۀ محیط زیست، دانشگاه تهران یونس شریفی دانشجوی ارشد rs و gis، دانشگاه خوارزمی تهران فاطمه عادلی دانشجوی ارشد برنامه ریزی و مدیریت محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران

introduction land use change and climate change are the major concerns in the global environment. many environmental parameters affect the behavior of the earth’s climate system and its terrestrial components. effects of land use and land cover changes have direct influences on climate changes. now, climate change is known widely as a global health problem that has adverse impacts on natural an...

ژورنال: علوم آب و خاک 2019

In recent decades, land use changes have been one of the most important environmental issues worldwide. This study was carried out to investigate and analyse land use changes in dust sources of south and south-east Ahwaz and surrounding lands using remote sensing technique. Firstly, based on the standard precipitation index (SPI), the years 1986, 2002 and 2016 were selected as years with near n...

2001
C. J. de Zeeuw G. W. Hazeu

Zeeuw, C.J. de and G.W. Hazeu, 2001. Monitoring land use changes using geo-information; possibilities, methods and adapted techniques. Wageningen, Alterra, Green World Research. Alterra-rapport 214/CGI-report 9. 84 blz., 18 fig.; 16 tab.; 46 ref. Monitoring of land use with geographical databases is widely used in policy decision-making. This reports presents the possibilities, methods and adap...

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