نتایج جستجو برای: rodna mountains national park
تعداد نتایج: 429388 فیلتر نتایج به سال:
fragmentation, or breaking apart of habitats, is one of the major causes of decline in biological diversity. mature ecosystems, especially dense forests are very sensitive to this phenomenon and roads are one of the major causes of fragmentation in forest landscapes. present investigation aims to trace landscape fragmentation in dense forests of golestan national park in northeast of iran betwe...
population growth and urbanization increase the demand for developing new roads. heavy traffic of the east of tehran imposes high pressure on transportation. network of this city and old road of tehran-rudehen does not meet this need. therefore, constructing the new highway (tehran – pardis) in the east of tehran would be needed. but the new highway passes through protected area of jajrood an...
Smithsonian Institution, 647 Contees Wharf Road, Edgewater, MD 21037-0028, USA, Department of Ecology and Evolutionary Biology , Brown University, Providence, RI 02912, USA, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, USA, Tropical Ecology Assessment and Monitoring Network, Moore Center for Ecosystem Science and Economics, Conservatio...
numbers of persian leopards have considerably decreased in recent years and for this reason it has been categorized as endangered in the iucn classification. habitat destruction is believed to be the main cause of the species population decline. hence, attempts to preserve the remaining habitats of this kind of animal effectively are deemed essential in reversing its downgrading trend. to hit t...
this is a year field study to evaluate the recreational needs of visitors bamu national park. bamu national park has the potential ecotourism capabilities to attract ecotourist which should be utilizing of this ability in regional planning. in this study clawson method used that one of the most common methods of evaluation systems resorts in aware of the people comments. about 225 questionnaire...
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