Investigation on Spatial Distribution of Wych elm (Ulmus glabra) in Relation to Physiographic Factors in Experimental and Educational Forest of Kheyroud Kenar
Journal Title: محيط شناسي - Year 2007, Vol 33, Issue 43
Abstract
The current research was carried out in Patom, Nam Khaneh, Gorazbon and Chelir Districts in Experimental and Educational Forest of Kheyroud. Thanks to extent of study area and dispersion of Wych elm on this area, the plot less sampling method was applied. After field inspection and identifying the remaining individuals of Wych elm trees (Ulmus glabra), d.b.h ≥10cm, Physiographic Factors (altitude a.s.l, aspect, slope were recorded. The results show that Wych elm trees were distributed from 330 m to 1315m above sea level. On north-facing and east-facing slopes, the numbers of elm trees were the most and least, respectively. In relation to slope or steepness, this tree dispersed on plain or flat terrain to steep slopes but the number of tree in gentle slope was more than higher slope.
Authors and Affiliations
Sayed Jalil Alavi, Ghavamedin Zahedi Amiri, Mohammad Reza Marvi Mohajer, Zahra Nouri
مقايسة تنوع زيستي تودة آميخته سوزنيبرگ با تودة آميخته پهن برگ در منطقة كلاردشت
تنوع زيستي گونههاي چوبي تودة سوزنيبرگ آميخته نوئل-كاج سياه و توده آميخته پهن برگ شاخهزاد در منطقة كلاردشت (شمال ايران) مطالعه شد. آماربرداري به روش سيستماتيك- تصادفي در قطعات نمونه 100 متر مربعي با ابعاد شبكه 20×50 مت...
Evaluation of Geothermal Power Plants Development:<br /> An Environmental Economics Perspective<br />
In the sector of electricity production, the existence of investment resources limitation and environmental factors are the main factors that influence this process. The reduction of costs and the destructive impacts of...
بررسي حذف كروم از پساب صنايع چرمسازي<br /> با استفاده از جوهر ميوه بلوط<br />
تحقيق حاضر به منظور بررسي نقش عصاره تانن دار(جوهر ميوه بلوط) در حذف كروم از پساب چرم سازي به كمك دو كنترل كننده pH (آهك و سود) صورت گرفته است. به اين منظور گونه اي از درختان بلوط بنام Quercus branti كه ميوه آن بيشترين در...
The Application of AHP Method for Optimum Solid Waste Landfill Site Selection: A Case Study of Bo nab City in East Azerbaijan Province, Iran
Analytic Hierarchy Process (AHP) is one of the most frequently used methods of multiple criteria choices. In site selection of an optimum place fro landfill in the city of Bonab located in East Azerbaijan Province, the A...
الگويي براي تحديد محدودة مطالعاتي در ارزيابي پيامد فعاليتها بر محيط زيست (با استفاده از :شش مطالعة موردي)
خروجيهاي گزارش ارزيابي پيامد فعاليتها بر محيط زيست (ا.پ.ف.م.) به منزلة يک سامانة پشتوانه تصميمگيري همواره تابعي از مرزهاي محدودة مطالعاتي خواهد بود. اين در حالي است که مرز محدوده مطالعاتي ممکن است در بر گيرندة دو ماهي...