نتایج جستجو برای: environmental conservation

تعداد نتایج: 460175  

2011
John Schelhas Max J. Pfeffer

National park and related forest conservation efforts tend to emanate from core areas of the world and are often imposed on rurai people living on forest fringes in the least developed regions of lesser developed countries. We address the social and cuitural processes that ensue when center-originating conservation meets local people with their resource-dependent livelihoods, and how these vary...

Journal: :مرتع و آبخیزداری 0
سید علیرضا موسوی عضو هیئت علمی، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان حسین ارزانی عضو هیئت علمی، دانشکده منابع طبیعی، دانشگاه تهران غلامعلی شرزه ای عضو هیئت علمی، دانشکده اقتصاد، دانشگاه تهران حسین آذرنیوند عضو هیئت علمی، دانشکدة منابع طبیعی، دانشگاه تهران مهدی فرح پور عضو هیئت علمی، مؤسسه تحقیقات جنگل ها و مراتع ایران استفانی انگل رئیس گروه تصمیم ‏سازی و اقتصاد محیط زیست مؤسسه eth سوئیس اسماعیل علیزاده

soil conservation is one of the most important regulative functions of natural ecosystems. this function is of high importance in taleghan watershed due to high erosion quantity and sediment accumulation in taleghan dam reservoir. soil loss reduction, sedimentation control and fertility conservation were considered as different aspects of soil conservation. effect of land use and vegetation cov...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2006
James Morton Turner

Questions persist regarding whether the science of conservation biology can successfully affect environmental decision making. One of the most prominent fields of intersection between conservation science and environmental policy is public-lands debates in the United States. I reviewed the role of conservation science in the roadless-area policies of the U.S. Forest Service. Since 1971, the For...

2012
Xiaoli Shen Jiaxin Tan

The Sanjiangyuan region is located on the Qinghai-Tibetan Plateau in western China and encompasses the headwaters of the Yangtze, Yellow and Mekong rivers. It is also home to 300,000 Tibetan pastoralists. The area is characterized by its significant ecological service, unique culture, and fragile ecosystems, and has undergone a rapid degradation over the past several decades. Traditional Tibeta...

2016
Bayarbaatar Buuveibaatar Thomas Mueller Samantha Strindberg Peter Leimgruber Petra Kaczensky Todd K. Fuller

a Wildlife Conservation Society, Mongolia Program, Ulaanbaatar, Mongolia b Department of Environmental Conservation, University of Massachusetts, Amherst, MA, USA c Senckenberg Biodiversity and Climate Research Centre, and Department of Biological Sciences, Goethe University Frankfurt, Frankfurt, Germany d Wildlife Conservation Society, Global Conservation Program, Bronx, NY, USA e Smithsonian ...

Journal: :Journal of the Japanese Institute of Landscape Architects 1988

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید