نتایج جستجو برای: shimbar protected area

تعداد نتایج: 631893  

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: :The Science of the total environment 2018
Aristides Moustakas Anneta Voutsela Stelios Katsanevakis

Data of alien species presences are generally more readily available in protected than non-protected areas due to higher sampling efforts inside protected areas. Are the results and conclusions based on analyses of data collected in protected areas representative of wider non-protected regions? We address this question by analysing some recently published data of alien plants in Greece. Mixed e...

2012
Aysegul Yilmaz

Title of Dissertation: EVALUATING THE IMPACTS OF TOP-DOWN PROTECTED AREA GOVERNANCE ON LOCAL LIVELIHOODS – THE CASE OF THE TURKISH VILLAGE OF KAPIKIRI Aysegul Yilmaz, Doctor of Philosophy, 2012 Dissertation directed by: Professor Marie Howland, Urban Studies and Planning This study evaluates the positive and negative impacts of strict protected area designation on the livelihoods and socioecono...

2013
América P. Durán Stefano Casalegno Pablo A. Marquet Kevin J. Gaston

Protected areas are increasingly considered to play a key role in the global maintenance of ecosystem processes and the ecosystem services they provide. It is thus vital to assess the extent to which existing protected area systems represent those services. Here, for the first time, we document the effectiveness of the current Chilean protected area system and its planned extensions in represen...

2013
David Thompson

T IO N A L — a m onth ly pub lica tion conta in ing synopses o f dissertations, also available in the library: D A T R IX II Search Service — a computerized, m ail-o rder system which w ill prepare, in response to yo u rin d iv id u a l inquiry, an interdisciplinary list o f disser­ tations related to yo u r topic: Xerox University M icro film s' dissertation p ub lish ­ ing service, which w il...

2011
Franc Dugal Evgeny Tsyplakov Andreas Baschnagel Liutauras Storasta Thomas Clausen

We present a newly developed 4500 V and 2000 A Press-Pack IGBT module for power transmission and industrial voltage drives applications. The module employs SPT IGBT chips with exceptionally low losses and high Safe Operating Area (SOA). The use of SPT IGBT chips in this Press Pack IGBT module allows for higher power densities and the package provides a highly flexible modular platform with very...

Journal: :Environmental management 2007
Yongyut Trisurat

Protected areas in Thailand were first established 40 years ago. The total area of existing protected areas covers 18.2% of the country's land area and the Class 1 Watershed, another form of protection, encompasses 18.1%. The government of Thailand intends to increase protected area systems to 25% of the country in 2006 and 30% in 2016. There are always questions arising about how much is enoug...

خلیل‌آبادی, سمیه, سفیانیان, علیرضا, متین‌خواه, سیدحمید, همامی, محمودرضا, کابلی, محمد,

  Determining landscape parameters influencing species richness of habitat patches is one of the most important issues in conservation biology. Many previous studies have investigated the influence of habitat parameters on bird assemblages in forest patches, but studies seeking effects of oasis parameters on bird assemblages are very scarce. Karkas Protected Area is located in semi-arid zone in...

توانکار, فرزام, نیکوی, مهرداد,

Rotten and dead trees are the main component of forest ecosystems and play an important role in maintaining forest biodiversity. In this research frequency and characteristics of large diameter trees (normal, rotten, and dead trees) with diameter at breast height greater than 60 cm were studied in two compartments (selective logged and protected) in Asalem-Nav forest. Random systematic sampling...

Journal: :محیط زیست طبیعی 0
علی جعفری استادیار دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه شهرکرد زهرا آرمان کارشناس ارشد جنگلداری، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه شهرکرد

this paper aims to detect occurred changes in vegetation cover of forested helen protected area using extracted ndvis from bi-temporal multispectral images of landsat tm. to do so, at first forest areas with low and moderate density cover were identified and separated on land use map. then preprocessing applications including radiometric corrections were done on both 1990 and 2009 images. also ...

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