نتایج جستجو برای: in protected area

تعداد نتایج: 17020089  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2015
Vanessa M Adams Samantha A Setterfield Michael M Douglas Mark J Kennard Keith Ferdinands

Protected areas remain a cornerstone for global conservation. However, their effectiveness at halting biodiversity decline is not fully understood. Studies of protected area benefits have largely focused on measuring their impact on halting deforestation and have neglected to measure the impacts of protected areas on other threats. Evaluations that measure the impact of protected area managemen...

توحیدی, محبوبه, ملکی, سعیده, همامی, محمودرضا, پاک نیت, داود,

Predicting species’ distribution is a prerequsit for assessing threats, determining conservation status, and planning conservation programs. Asian houbara Chlamydotis macqueenii is one of the most valuable game species threatened by extinction. We estimated the distribution of potential suitable habitats of wintering populations of Asian houbara bustard in central Iranian plateau using maximum ...

1998
H. J. Albers

Conflicts between resource-dependent people and protected area managers abound in many developing countries. From the rural people's perspective, protected areas may contain valuable or necessary natural resources that are worth the effort, and risk of capture, to extract. From the protected area manager's perspective, the rural people's extraction of resources causes environmental degradation ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی 1391

the present dissertation aims to investigate four-word lexical bundles in applied linguistics research articles by iranian and internationally-published writers. the aims of this study are two-fold: first of all, attempts have been made to create a comprehensive list of the most commonly used four-word lexical bundles categorized by their type and token frequency, their structural characteristi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان 1392

in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...

Journal: :caspian journal of environmental sciences 2011
h. pourbabaei r. abedi

the objective of this research was to identify and describe the different ecological species groups (vegetation types) present in the rural heritage museum of guilan. the study area was approximately 260 ha, which is located in the saravan forest park in guilan province, north of iran. sampling procedure was performed with a systematic random technique. a total of 89 plots were sampled. classif...

Journal: :محیط زیست طبیعی 0
مریم یعقوب زاده دانشجوی کارشناسی ارشد محیط زیست، دانشکدة منابع طبیعی، دانشگاه تهران افشین دانه کار دانشیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران بهمن جباریان امیری استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران سهراب اشرفی استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران

sensitive coastal areas are fragile ecosystems affected by geographic features and in the same time settlements were developed around these areas due to their ecological capability. coastal ecosystems due to their countless benefits are very important for protection. hence, this paper attempts to determine the sensitivity of coastal ecosystem to disturbances in hormozgan province. we reviewed 2...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید