نتایج جستجو برای: forest

تعداد نتایج: 106136  

Journal: :محیط زیست طبیعی 0
شریف جورابیان شوشتری کارشناس ارشد محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس عباس اسماعیلی ساری استاد گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس سید محسن حسینی دانشیار گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس مهدی غلامعلی فرد دانشجوی مقطع دکتری و بورسیه هیئت علمی گروه محیط¬زیست، دانشکده منابع طبیعی، دانشگاه تربیت مدرس.

this study was performed with objective land cover change prediction (forest, agriculture, residential and orchard) using logistic regression and markov chain in the gis environment in east of mazandaran province. land cover change detected using satellite imageries belonging to the years 1987 and 2001. transition potential modeling was conducted using a logistic regression. seven variables (de...

Journal: :international journal of environmental research 2015
v. v. brygadyrenko

specific features of the structure of the ground litter invertebrate community in forest belt ecosystems in the ukrainian steppe zone have been considered. for 14 years invertebrate fauna of the litter of 176 forest belt sites with different composition has been studied with the aid of soil traps. the main characteristics of litter invertebrate communities (total population, a number of species...

Sustainable forest management standards and measurement instruments subject and use them as the main tool is very important for monitoring and control in forest management. Sustainable progress monitoring and measuring possible by tools and standards. Tools and standards to help sustainable forest management can be more accurate and better information provided to forest managers and decision-ma...

Aidin Parsakhoo Ataollah Kavian Atta Safari,

Forests are an important economic source for human and have key role in nutrient cycle, hydrology and ecosystem performance, any interference in this vital ecosystem causes to damage to forests. Mechanical logging and road construction in forest areas have led to much soil compaction. Soil physical and chemical properties were studied in parts of road and non-road in the Darabkola forest of Ira...

Aidin Parsakhoo Ataollah Kavian Atta Safari,

Forests are an important economic source for human and have key role in nutrient cycle, hydrology and ecosystem performance, any interference in this vital ecosystem causes to damage to forests. Mechanical logging and road construction in forest areas have led to much soil compaction. Soil physical and chemical properties were studied in parts of road and non-road in the Darabkola forest of Ira...

Abdolaslam Bonyad Mozhgan Bazyar Sasan Babaie Kafaki

The Zagros forests (west of Iran) have been highly exploited in recent decades by human impacts. Easy access, abundance and variety of valuable forest yields have led to population growth density, creation of new residential areas and deforestation activities. In order to determinate the distribution and rate of deforestation from 1995 to 2006 by using the satellite imagery (IRS-1C and  LANDSAT...

Journal: :محیط زیست طبیعی 0
آرش کرمی کارشناس ارشد رشتۀ جنگلداری و اقتصادجنگل دانشکدۀ منابع طبیعی، دانشگاه تهرا جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران محمدرضا مروی مهاجر استادگروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران

without doubt is one important aspects of sustainable forest management the continuing forest regeneration. identify and determine is effective dispersal and distribution pattern of regeneration patches in various types of forest and its evolution, in maintaining biodiversity in natural ecosystems. purpose was chosen of gorazbon district kheyrod forest for study, all patches regeneration were l...

Abdolaslam Bonyad Mozhgan Bazyar Sasan Babaie Kafaki

The Zagros forests (west of Iran) have been highly exploited in recent decades by human impacts. Easy access, abundance and variety of valuable forest yields have led to population growth density, creation of new residential areas and deforestation activities. In order to determinate the distribution and rate of deforestation from 1995 to 2006 by using the satellite imagery (IRS-1C and  LANDSAT...

Abdolaslam Bonyad Mozhgan Bazyar Sasan Babaie Kafaki

The Zagros forests (west of Iran) have been highly exploited in recent decades by human impacts. Easy access, abundance and variety of valuable forest yields have led to population growth density, creation of new residential areas and deforestation activities. In order to determinate the distribution and rate of deforestation from 1995 to 2006 by using the satellite imagery (IRS-1C and  LANDSAT...

Having accurate quantitative and qualitative information about the state of forest stands, is necessary for any basic management and planning, to reduce the effects of forest degradation. The current study aimed to model the destruction of Hyrcanian forests under the effects of density and volume (per hectare) variables, using logistic regression. In total, 252 plots of 1000 m2 area were measur...

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