Closed dry oak forests in the Zámoly Basin and its surroundings (Pulmonario mollis-Quercetum roboris Kevey 2008)
نویسندگان
چکیده
منابع مشابه
the survey of the virtual higher education in iran and the ways of its development and improvement
این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.
Land-use History and Its Role in Sustaining Oak Forests
INTRODUCTION As the Wisconsin ice sheets retreated to the North toward the end of the Pleistocene Epoch, tundra and boreal vegetation that had dominated the Central Hardwood Region began to be replaced by hardwood species. Spurred on by the warming climate and the widespread use of fire by Native Americans, oaks (Quercus spp.) gradually dominated the region (Abrams 2002, Carroll and others 2002).
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چکیده ندارد.
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The bird species distribution along a dry forest-oak woodland vegetation gradient was studied in autumn and spring in two consecutive years. Intra-seasonal comparisons showed that bird species had similar distributions in each of the two years. Inter-seasonal changes were mainly due to compositional differences even though resident species generally used similar habitats in both seasons. Ordina...
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ژورنال
عنوان ژورنال: Botanikai Közlemények
سال: 2015
ISSN: 0006-8144,2415-9662
DOI: 10.17716/botkozlem.2015.102.1-2.85