نتایج جستجو برای: landscape maintenance

تعداد نتایج: 212947  

Journal: :محیط شناسی 0
فرود آذری دهکردی استادیار گروه برنامه ریزی و مدیریت دانشکدة محیط زیست، دانشگاه تهران نوشین خزاعی دانشجوی کارشناسی ارشد، دانشکدة محیط زیست دانشگاه تهران

degradation model was introduced as an instrument of environmental impact assessment (eia) in iran. several methods are introduced in rapid environmental assessment, but none of them have evaluated landscape level. thus, the main objective of this research is to introduce a new spatial method for eia by using landscape metrics. a benefit of rapid assessment by using ecological landscape metrics...

Journal: مدیریت شهری 2015
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Quality of urban areas and improvement of it have always been considered as one of the main issues in the process of urbanization. It might be possible to consider this importance as the result of fundamental changes in intellectual patterns during the past two decades in one side and its proposal in all aspects of human life on the other side though this is one of the main influential concepts...

2006
Silke Hein Birgit Binzenhöfer Hans-Joachim Poethke Robert Biedermann Josef Settele Boris Schröder

Field Station Fabrikschleichach, Glashuettenstrasse 5, 96181 Rauhenebrach, Germany UFZ – Centre for Environmental Research Leipzig-Halle, Dept. of Conservation Biology, Permoserstr. 15, 04318 Leipzig, Germany IBE, Landscape Ecology Group, Carl von Ossietzky University of Oldenburg, PO Box 2503, 26111 Oldenburg, Germany UFZ – Centre for Environmental Research Leipzig-Halle, Dept. of Community Ec...

2005
K. WATTS J. W. HUMPHREY D. RAY

UK forests and woodlands are often of considerable value to biodiversity. There is now a growing need to evaluate the impacts of forest management on biodiversity, in order to maintain and enhance the wildlife value at the landscape scale. The development of biodiversity evaluation tools will enable forest and land managers to make informed choices at this scale in order to provide sustainable ...

2006
S. T. Akindele

We analytically put the concept of public administration into perspective in this paper. In the process, we traced its genealogy and, its theoretical provisions as well as the implications and challenges of these provisonal at each stage of its development. We specifically zeroed-in on the practical applications of these provisons in a country like Nigeria. Prominence was given to the features ...

2010
R. Van Bogaert D. Walker G. J. Jia O. Grau M. Hallinger M. De Dapper C. Jonasson T. V. Callaghan

1FWO Flanders Research Foundation, Geography Department, Ghent University, Belgium 2Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 3Institute of Atmospheric Physics, Chinese Academy of Science, Beijing, China 4Plant Biology Department, Unit of Botany, University of Barcelona, Catalonia, Spain 5Institute for Botany and Landscape Ecology, Ernst-Moritz-Arndt-University ...

2003
Dan Liu Xiangjian He Yicheng Jin

The scene simulation is one of the kernel methods in developing the navigation simulator, and terrain is one of the important components of the scene simulation. According to the basic request on terrain protraction in the visual system of navigation simulatorand the software and hardware platform of the existing navigation simulator. Many useful results of bivariable functions have been obtain...

2013
Christopher Blair Victor H. Jiménez Arcos Fausto R. Mendez de la Cruz Robert W. Murphy

Habitat fragmentation due to both natural and anthropogenic forces continues to threaten the evolution and maintenance of biological diversity. This is of particular concern in tropical regions that are experiencing elevated rates of habitat loss. Although less well-studied than tropical rain forests, tropical dry forests (TDF) contain an enormous diversity of species and continue to be threate...

2017
Xiaosheng Luo Liufang Xu Bo Han Jin Wang

Using fission yeast cell cycle as an example, we uncovered that the non-equilibrium network dynamics and global properties are determined by two essential features: the potential landscape and the flux landscape. These two landscapes can be quantified through the decomposition of the dynamics into the detailed balance preserving part and detailed balance breaking non-equilibrium part. While the...

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