نتایج جستجو برای: lands areas

تعداد نتایج: 409535  

2008
Y. Q. Wang Z. Wu H. Zhang

The challenges of managing natural resources of protected areas not only come from the inside of the protected boundaries, but also from the surrounding territories because most of protected lands are open systems that face threats from adjacent areas. The lands of such open systems alter water quality and flow regimes, increase the likelihood of invasive plant and animal range expansions, redu...

2008
Rajesh Bahadur Thapa Yuji Murayama

Quantifying landscape pattern and its change are essential for the monitoring and assessment of environmental consequences of urban area. This paper aims to analyze spatiotemporal patterns of urban landscape changes in Kathmandu Valley, Nepal by combining remote sensing, GIS and landscape metrics. Multi-temporal satellite images from high resolution (CORONA, SPIN and IKONOS) to moderate resolut...

Journal: :Environmental management 2013
Robert L Beschta Debra L Donahue Dominick A DellaSala Jonathan J Rhodes James R Karr Mary H O'Brien Thomas L Fleischner Cindy Deacon Williams

Climate change affects public land ecosystems and services throughout the American West and these effects are projected to intensify. Even if greenhouse gas emissions are reduced, adaptation strategies for public lands are needed to reduce anthropogenic stressors of terrestrial and aquatic ecosystems and to help native species and ecosystems survive in an altered environment. Historical and con...

2016
Matthew Altonji Corey Lang Gavino Puggioni

Statewide referenda for land conservation are likely to entail a disparity between people who vote on the referenda and those who live in proximity to conserved areas, which may lead to a lower probability of passage than a more local referendum. This paper examines trends in voting preferences on statewide land conservation referenda in Rhode Island using precinct-level voting data. We identif...

2002
S. A. O. Chamshama J. B. Nduwayezu

Tanzania 2002 Summary The continued vicious cycle of population-poverty-and-environmental degradation has been acknowledged. The purpose of this paper, therefore, is to draw attention to the serious consequences of land degradation, a national and trans-national socioeconomic complex problem, and the need for rehabilitating degraded lands in the sub-humid lands of Sub-Saharan Africa (SSA). The ...

2011
Darryl Low Choy Michael Buxton

Peri-urban areas are typically associated with high growth regions that have witnessed rapid landscape changes on the peripheries of metropolitan and urban areas with a particular focus on high amenity areas. These former rural lands adjacent to the edges of urban areas into which they would typically expands or influences have been described as peri-urban areas (‘peri’: around, about or beyond...

ژورنال: علوم آب و خاک 2012
سید جمال‌الدین خواجه‌الدین, , امیرحسین پارسا‌مهر, , زهرا خسروانی, , علیرضا سفیانیان, , محمود محبی, ,

LISS IV sensor's data from IRS-P6 satellite was used to produce land use map of eastern region of Isfahan, the studied part of which has an area of 22121 hectares. Its three band data, namely band 2 (Green), band 3 (Red) and band 4 (Near infra red) of LISS-IV sensor images with 5.8 m ground resolution were georeferenced by nearest neighbor method and first-order polynomial model to the DEM map ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی و اجتماعی 1389

today the image of a permanent skeletal space of cities affected by some forces or mechanisms is put in time with social-economic development and while imposes a new face and perspective to physical anatomy of cities, and prepares field to changes in content and social- economic structures of cities too. simultaneously with quitting villages in order to settle in cities by villagers, the phen...

The lack of water in arid and semi-arid areas has become a serious crisis, endangering living conditions. Sloping lands in the geographical and natural areas of Central Province have always been critical areas as sources of sediment production and erosion. Meanwhile, these areas provide valuable capacity for productive employment and conservation of water and soil resources through the construc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده جغرافیا 1392

the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید