نتایج جستجو برای: Fraxinus rotundifolia.
تعداد نتایج: 1611 فیلتر نتایج به سال:
in order to assess the adaptation of elaeagnus angustifolia l. and fraxinus rotundifolia mill afforestation around tabriz international airport, the qualitative and quantitative characteristics of trees were measured in 96 experimental circular plots with a size of 300 m2. to study the edaphic effects of these species, nine samples were randomly collected from 0-10 cm and 10-20 cm depth of soil...
In the present article, two new mitosporic spccies are introdued, namely: Cercospora fraxinicola Ershad, sp. nov. on Fraxinus rotundifolia and Ramularia rubicola Ershad, sp. nov. on Rubus caesicus.
در این نوشته دو گونه قارچ جدید به اسامی cercospora fraxinicola ershad, sp. nov. روی fraxinus rotundifolia و ramularia rubicola ershad, sp. nov. روی rubus caesicus پیشنهاد شده اند. توصیف هر دو قارچ و ترسیمی از اندام های آنها همراه با شکلی از علایمی که روی میزبان خود ایجاد می کنند، ارایه گردیده است.
due to the different factors and complexity of their effects on healthy and sustainability of urban forest, this study has been tried by means of determining effective factors in ecosystem, and dividing sorkhe hesar man made forest park to homogeneous units according to natural factors (slope, aspect, high, soil depth, mixture and pure planting system) and human factors (amount of irrigation an...
هدف این تحقیق، ارزیابی تأثیرات گردوغبار بر صفات مورفوفیزیولوژیک نهال زبانگنجشک (Fraxinus rotundifolia Mill.)، بهعنوان گونهای پرکاربرد در فضای سبز شهری است. تنش گردوغبار با غلظتهای صفر، 750 و 1500 میکروگرم بر متر مکعب با استفاده از دستگاه شبیهساز گردوغبار در محیط گلخانه اعمال شد. آزمایش در پنج تکرار (نه اصله نهال در هر تکرار) در یک دورۀ 45 روزه (با تناوب هر هفته) در قالب ط...
the ability of trees to trap dusts convinces their use for preventing the transport of dust over longer distances. this ability is increasingly important in threatened areas with dust invasion. the purpose of this study was to compare the size and distribution of particles deposited on the leaves surface of fraxinus rotundifolia, platanus orientalis, and robinia pseudoacacia trees, in paveh, we...
بهمنظور بررسی امکان سازگاری و استقرار گونههای مختلف پهنبرگ و سوزنیبرگ و شناسایی و معرفی آنها، طرح سازگاری گونههای مختلف پهنبرگ و سوزنیبرگ با تعداد 10 گونه درختی شامل زربین ,Cupressus sempervirens var . horizontalis Mill، سرو نقرهای Cupressus sempervirens var.arizonica Greene، کاج سیاه Pinus nigra Arnold، کاج بروسیا Pinus btutia Elwes Henry، کاج تهران pinus eldarica Medw، آیلان Ailanthu...
recently, the most important topic in water management was to determine the effects of urban forests and green space on partitioning gross rainfall (gr) into the rainfall interception (i), stemflow (sf), and throughfall (tf). the main aim of this research was to quantify the seasonal variations [growing season (gs), and non-growing season (ngs)]) in i by individual fraxinus rotundifolia trees i...
PREMISE OF THE STUDY We developed new microsatellite primers for the alpine bellflower Campanula scheuchzeri. Allelic polymorphisms will be used to study differentiation along elevation gradients of C. scheuchzeri populations and in the co-occurring sister-species C. rotundifolia in the Alps. METHODS AND RESULTS We analyzed C. scheuchzeri from three high-elevation sites and C. rotundifolia fr...
Old trees as the most important genetic reserves of the country have great importance and value in various aspects of ecology, forest restoration management, ecotourism and even history. In this research, after identification of the old trees in the forests of Ilam province, their morphological characteristics including DBH, trunk height, total height, crown length, min & max crown diameter, cr...
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