نتایج جستجو برای: linear trees and scattered treesfor calculating cover crown

تعداد نتایج: 16924452  

Journal: :محیط زیست طبیعی 0
هاشم کنشلو عضو هیئت علمی مؤسسه تحقیقات جنگلها و مراتع کشور علی اقتصادی استادیار مؤسسه تحقیقات جنگلها و مراتع کشور

in order to study the effect of afforestation in reduction oil pollution, one planted area in dezful, affected by pollutions from kuwaiti oil-wells burning was employed. six species, eucalyptus camaldulensis, eucalyptus microtheca, dalbegia sissoo, acacia salicina, acacia stenophylla, populus euphratica were selected. growth parameters, leaf samples and soil samples from different depths (0-30,...

M. Pourhashemi M. Zandebasiri P. Panahi

Acorn production plays a fundamental role in the organization and dynamics of oak forest ecosystems. Regarding acorn importance, visual survey methods have been used to estimate acorn production of oak species throughout the world. In this study, the mast indices of Brant`s oak (Quercus brantii Lindl.) were determined in a section of northern Zagros forests, almost 36 ha area, near Baneh, Kurdi...

Ghaderi F, Hasehemi SAA (2022) Phytophthora citricola as the causal agent of persimmon root rot in Fars province of Iran. Plant Pathology Science 11(2): 1-10.   Doi: 10.2982/PPS.11.2.1   Introduction: Phytophthora species are a serious threat to plant products worldwide. Therefore, identifying them is the first step in finding a way to treat the disease. The aim of this study was to identify ...

Journal: :caspian journal of environmental sciences 2013
p. panahi m. pourhashemi m. zandebasiri

acorn production plays a fundamental role in the organization and dynamics of oak forest ecosystems. regarding acorn importance, visual survey methods have been used to estimate acorn production of oak species throughout the world. in this study, the mast indices of brant`s oak (quercus brantii lindl.) were determined in a section of northern zagros forests, almost 36 ha area, near baneh, kurdi...

2013
Akihiro Sumida Tomiyasu Miyaura Hitoshi Torii

Stem diameter at breast height (DBH) and tree height (H) are commonly used measures of tree growth. We examined patterns of height growth and diameter growth along a stem using a 20-year record of an even-aged hinoki cypress (Chamaecyparis obtusa (Siebold & Zucc.) Endl.) stand. In the region of the stem below the crown (except for the butt swell), diameter growth rates (ΔD) at different heights...

ژورنال: علوم آب و خاک 2004
سیدجمال الدین‌خواجه‌الدین, , احمد جلالیان, , ندا زاهدی‌فرد, ,

Satellite data use is finding global applications because they provide repeated cover, broad information, high electromagnetic spectral resolution, and software-hardware compatibilities. This study aims to evaluate of the Landsat TM data capabilities in land-use mapping of Bazoft River basin (Chahar Mahale Bakhtiary Province). Six spectral bands of the Landsate TM were employed to produce land-...

سیدجمال الدین‌خواجه‌الدین, , احمد جلالیان, , ندا زاهدی‌فرد, ,

Satellite data use is finding global applications because they provide repeated cover, broad information, high electromagnetic spectral resolution, and software-hardware compatibilities. This study aims to evaluate of the Landsat TM data capabilities in land-use mapping of Bazoft River basin (Chahar Mahale Bakhtiary Province). Six spectral bands of the Landsate TM were employed to produce land-...

Abdalbasit Adam Mariod Mohammed Abdelkreim, Mohammed Ibrahim Abdelsalam Nancy Ibrahim Abdalla,

Fodder trees and shrubs are crucial sources of animal feed in Sudan, particularly in arid and semi-arid areas. This is because they can fill up the feed gaps in the summer period when grassland growth is limited due to unfavorable weather conditions. The study was conducted in Elnour forest-southeastern Sudan in 2015, which is dominated by Acacia seyal. The objectives of this study were to esti...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

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