نتایج جستجو برای: protected natural landscape

تعداد نتایج: 593018  

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
Ruth DeFries Andrew Hansen B L Turner Robin Reid Jianguo Liu

Protected areas throughout the world are key for conserving biodiversity, and land use is key for providing food, fiber, and other ecosystem services essential for human sustenance. As land use change isolates protected areas from their surrounding landscapes, the challenge is to identify management opportunities that maintain ecological function while minimizing restrictions on human land use....

Journal: :محیط شناسی 0
شهیندخت برق جلوه مدیر گروه برنامه ریزی و طراحی محیط پژوهشکده علوم محیطی دانشگاه شهید بهشتی مینا منصوری کارشناسی ارشد مهندسی طراحی محیط زیست دانشکده محیط زیست دانشگاه تهران سید یحیی اسلامی عضو هیأت علمی دانشکده معماری پردیس هنرهای زیبا دانشگاه تهران

introduction this study is dealt with the environmental planning from a bio-cybernetic and hierarchical systems viewpoint within the context of landscape ecology. this viewpoint requires not only knowledge of the science of ecology but also ecological wisdom in order to recognize the place of humankind in nature. the conceptual and practical approach which is provided will help landscape planne...

2008
Mark Vellend Anne D. Bjorkman Alan McConchie

Quantifying the degree to which natural or protected areas are representative of a specified baseline provides critical information to conservation prioritization schemes. We report results on southeastern Vancouver Island, Canada, where we compared environmental conditions represented across the entire landscape, in oak savanna habitats prior to European settlement (<1850), and in both protect...

Journal: :محیط شناسی 0
لعبت زبردست دانشجوی دکتری برنامه ریزی محیط زیست، دانشکدة محیط زیست، دانشگاه تهران احمدرضا یاوری استادیار دانشکده محیط زیست دانشگاه تهران(ارزیابی و اکولوژی کوهستان) اسماعیل صالحی گروه مدیریت و برنامه ریزی دانشکدة محیط زیست دانشگاه تهران، دکتری شهرسازی مجید مخدوم استاد محیط زیست دانشکدة منابع طبیعی، دانشگاه تهران

fragmentation is one of the major spatial processes leading to change in a landscape, which is described as transformation of a specific habitat or land cover to smaller patches with less connectivity and viability. construction of roads is one of the main causes of fragmentation in natural areas and habitats. presence of roads in ecologically sensitive and protected areas, leads to destruction...

Journal: :محیط زیست طبیعی 0
غلامحسین مرادی دانشکده منابع طبیعی، دانشگاه تهران جهانگیر فقهی دانشیار دانشکده منابع طبیعی، دانشگاه تهران محمود زبیری استاد دانشکده منابع طبیعی، دانشگاه تهران هارالد واسیک دانشیار دانشگاه علوم زیستی و منابع طبیعی وین، اتریش

the aim of this research was to evaluate and select of appropriate indicators for different zones of baghe shadi region where it have six different zones (restricted zone, protected zone, restored zone, inhibition zone, recreational zone and other uses zone). to do so, first top-down approach and likert scale questionnaire was used for voting from 32 experts. after that using influence matrix, ...

Journal: :آمایش سرزمین 0
مهدی ایرانخواهی دکتری محیط زیست- ارزیابی و آمایش سرزمین، دانشکدة محیط زیست و انرژی، دانشگاه آزاد اسلامی- واحد علوم و تحقیقات، تهران، ایران سیدعلی جوزی دانشیار، دانشکدة فنی و مهندسی، دانشگاه آزاد اسلامی- واحد تهران شمال، تهران، ایران

the present study has been conducted on shemiranat county landscape, using lattice hexagon approach, for the first time, in order to achieve homogeneous units in degradation model. to this aim, with respect to the extent of the studied area, a lattice hexagon composed of 36 units (cells) was created and each grid cell was considered as a sub landscape. next, ecological vulnerability, degradatio...

2002
CLAS FRIES TOMAS LAMAS

Fries, C. & Lamls, T. 2000. Different management regimes in a boreal forest landscape: ecological and economic effects. Studia Forestalia Suecica 208. 25 pp. ISSN 0039-3150. Five management regimes were theoretically applied and evaluated in a 10 000 ha boreal forest landscape. Four regimes were designed to enhance conditions for biodiversity conservation, by establishing reserves and by modify...

Journal: :محیط زیست طبیعی 0
منصوره ملکیان گروه محیط زیست دانشکدۀ منابع طبیعی، دانشگاه صنعتی اصفهان راحله باقری کارشناس محیط زیست استان کهگیلویه و بویراحمد

investigating species diversity and richness is essential for defining conservation priorities. in addition, determining landscape parameters influencing species diversity and richness is important for selecting and designing parks and protected areas. kohgiluyeh & boyer ahmad province is a mountainous region, comprises hills, mounds, forests and plains. this vast province has high species dive...

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