نتایج جستجو برای: yazi rangeland of noor

تعداد نتایج: 21164586  

1998
STEVE ARCHER DAVID A. PYKE

The role of ungulate grazing in shaping rangeland ecosystems is well known relative to other important plant-animal interactions such as pollination, seed dispersal, granivory, and belowground herbivory. Successful rangeland revegetation may be enhanced by strategies that favor certain groups of animals and discourage others. Many perennial forbs and shrubs require animals for successful pollin...

Journal: :مرتع و آبخیزداری 0
مهدی قربانی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران. حسین آذرنیوند استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران. علی اکبر مهرابی استاد گروه آبخیزداری، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، ایران سوسن باستانی دانشیار دانشکده علوم اجتماعی و اقتصادی، دانشگاه الزهرا، ایران. محمد جعفری استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران. هوشنگ نایبی دانشیار دانشکده علوم اجتماعی، دانشگاه تهران، ایران.

since last decades, there has been a growing interest in the human/social dimensions of natural resources governance especially the structure of social networks in achieving to successful co-management of natural resources. network analysis as a suitable tool in optimum planning of the “network management” of rangeland in regional scale, can improve inter-organizational decision-making and coor...

2012
Wenjun Li Yanbo Li

The complexity of natural resource management is increasingly recognized and requires adaptive governance at multiple levels. It is particularly significant to explore the impacts of government interventions on the management practices of local communities and on target social-ecological systems. The Inner Mongolian rangeland was traditionally managed by indigenous people using their own instit...

2013
Devan Allen McGranahan David M. Engle Samuel D. Fuhlendorf Stephen L. Winter James R. Miller Diane M. Debinski

Conservation policy often incentivizes managers of human-impacted areas to create landscape heterogeneity to maximize biodiversity. In rangeland, patchy disturbance regimes create landscape heterogeneity (patch contrast), but outcomes of heterogeneity-based management are rarely tested for a universal response. We analyzed four habitat variables – vegetation structure, plant functional group co...

Journal: :فصلنامه تخصصی جنگ ایران و عراق 0
محمدجواد اکبرپور بازرگانی امیرمحمد حکمتیان

with the aims of protecting and exploiting the effects and values of imposed war and preventing the destruction and distorting them, the foundation for the preservation and publication of sacred defense works and values was established on february 26, 1991 by a command of the supreme leader and the commander-in-chief of the armed forces. then, the central headquarters of the rahian-e noor was c...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
Julia A Klein John Harte Xin-Quan Zhao

We investigated experimental warming and simulated grazing (clipping) effects on rangeland quality, as indicated by vegetation production and nutritive quality, in winter-grazed meadows and summer-grazed shrublands on the Tibetan Plateau, a rangeland system experiencing climatic and pastoral land use changes. Warming decreased total aboveground net primary productivity (ANPP) by 40 g x m(-2) x ...

Journal: :Al-Raida Journal 1970

Research aim was to compare the metacognitive approaches and motivational beliefs of masters` degree student of state and Payame Noor universities in Hamedan.This is a survey-descriptive of the applied type.The population sample was all the students of state and Payame Noor universities  of  Hamedan(5120 subjects).To collect data , class random sampling was used and the questionnaire was provid...

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