نتایج جستجو برای: landscape management

تعداد نتایج: 911670  

2008
Amanda M. Thomson Ian A. Simpson

Defining historic grazing pressures and rangeland management is vital if early landscape threshold crossing and long–term trajectories of landscape change are to be properly understood. In this paper we use a new environmental simulation model, Búmodel, to assess two contrasting historical grazing landscapes in Mývatnssveit Iceland for two key periods—the colonization period (ca. Landnám, A.D. ...

Journal: :Journal of Range Management 1971

Journal: :Revue de géographie alpine 2007

2002
Colin D. Stewart S. Kristine Braman

Eight 0.2–0.4 ha (0.5–1.0 A) sites managed by landscape professionals were monitored biweekly for beneficial arthropod activity. More than 30 generalist predator taxa were identified. Spiders and green lacewings were the most numerous taxa and both were found on all plant taxa sampled. Green lacewings, especially the egg stage, were the most numerous natural enemies detected on birch, crape myr...

2016
Yadav Uprety Ram C. Poudel Janita Gurung Nakul Chettri Ram P. Chaudhary

Non-timber Forest Products (NTFPs), an important provisioning ecosystem services, are recognized for their contribution in rural livelihoods and forest conservation. Effective management through sustainable harvesting and market driven commercialization are two contrasting aspects that are bringing challenges in development of NTFPs sector. Identifying potential species having market value, con...

2015
Juncheng Dai Xue Huang Huasheng Zhu

Against the background of economic transformation and urban renewal, the protection and sustainable development of urban industrial landscapes has become an important practical issue, and how to maintain the unique local culture of these landscapes is key to solving the problem. By integrating the concept of “layer” and regarding the landscape as text, this paper will investigate the representa...

Journal: :محیط زیست طبیعی 0
علی لطفی استادیار، گروه محیط زیست، دانشکده کشاورزی و منابع طبیعی، دانشگاه اراک، ایران سید مهدی حشمت الواعظین استادیار گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران، ایران

agricultural landscapes with the green veins and forests patches are forming many parts of european landscapes. in spite of many ecological, economic and agricultural advantages of these elements, they have been changed due to agricultural intensification. we studied changes of these elements, their relations with agricultural activities, farming systems and land use of the adjacent parcel in t...

2007
Z. Naveh

Associate Professor of Ecology, Technion-Israel Institute of Technology, Haifa, Israel 32 000. Abstract: East Mediterranean upland ecosystems are severely threatened by exponential landscape degradation and by the loss of biological diversity through monospecies afforestation and brush encroachment. Integrated landscape ecological research, planning, management and education are therefore urgen...

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