نتایج جستجو برای: coastal agriculture and land use

تعداد نتایج: 17020471  

Journal: :محیط شناسی 0
مهدی غلامعلی فرد دانشجوی دکترا و بورسیه هیأت علمی گروه محیط زیست، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس شریف جورابیان شوشتری کارشناس ارشد محیط زیست، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس سید حمزه حسینی کهنوج کارشناس ارشد مرتع داری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس محسن میرزایی دانشجوی کارشناسی ارشد محیط زیست،دانشکدة منابع طبیعی، دانشگاه تربیت مدرس

always mazandaran province had been exposed to development and changes because of location in coastline of the caspian sea and having unique conditions. gis and remote sensing can be used to monitor in order to manage this sensitive province. then, this study is trying to detect land cover changes in coastal areas of mazandaran province using lcm. land cover changes detection have done using la...

2008
Lara M. Kueppers Mark A. Snyder Lisa C. Sloan Dan Cayan Jiming Jin Hideki Kanamaru Masao Kanamitsu Norman L. Miller Mary Tyree Hui Du Bryan Weare

In the western United States, more than 79000 km has been converted to irrigated agriculture and urban areas. These changes have the potential to alter surface temperature by modifying the energy budget at the land–atmosphere interface. This study reports the seasonally varying temperature responses of four regional climate models (RCMs) – RSM, RegCM3, MM5-CLM3, and DRCM – to conversion of pote...

2017
Tamara S Wilson Benjamin M Sleeter D Richard Cameron

With growing demand and highly variable inter-annual water supplies, California's water use future is fraught with uncertainty. Climate change projections, anticipated population growth, and continued agricultural intensification, will likely stress existing water supplies in coming decades. Using a state-and-transition simulation modeling approach, we examine a broad suite of spatially explici...

2017
Cynthia Rosenzweig Francesco Nicola Tubiello

As climate changes due to rising concentrations of greenhouse gases in the atmosphere, agriculture will be one of the key human activities affected. Projections show that while overall global food production in the coming decades may keep pace with the food requirements of a growing world population, climate change might worsen existing regional disparities because it will reduce crop yields mo...

Land use change is certainly the most important factor that affects the conservation of natural ecosystems, resulting the conversion of natural lands such as forests and pastures into agricultural, industrial and urban areas. Despite numerous studies investigating landscape patterns due to land use change, the driving forces of landscape change has been less studied in Iran. In this study, Arti...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
José Iriarte Mitchell J Power Stéphen Rostain Francis E Mayle Huw Jones Jennifer Watling Bronwen S Whitney Doyle B McKey

The nature and scale of pre-Columbian land use and the consequences of the 1492 "Columbian Encounter" (CE) on Amazonia are among the more debated topics in New World archaeology and paleoecology. However, pre-Columbian human impact in Amazonian savannas remains poorly understood. Most paleoecological studies have been conducted in neotropical forest contexts. Of studies done in Amazonian savann...

Introduction Land-use planning has three subcategories: allocation, politics and economics. In general, allocation is the interaction between land proportion (supply) and the area required (demand), in current condition of the region. On the other hand, politics is the spatial planning. The economic aspect of land use is dedicated to the fact that in the system of supply and demand in order ...

Arghavan Shahlayie Azadeh Afrigan Mohammad Jafari Sara Jamalpour

The purpose of this study was identifying rangeland development andrestoration operations targets. This study was conducted in Hossein Abad Bazoft basinwith 7162 ha area, located in south east of Farsan County, Chaharmahal and BakhtiariProvince, Iran. The basin has various land uses including rangeland, forest, irrigated farmand garden, dry farm, residential area and rock mass. In this study, d...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1391

reinsurance is widely recognized as an important instrument in the capital management of an insurance company as well as its risk management tool. this thesis is intended to determine premium rates for different types of reinsurance policies. also, given the fact that the reinsurance coverage of every company depends upon its reserves, so different types of reserves and the method of their calc...

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