نتایج جستجو برای: juniperus excelsa

تعداد نتایج: 3036  

Journal: :ethno- pharmaceutical products 2014
maryam esmaili aazam monfared mohammad akbarzadeh

juniperus sabina l. is normally low shrub with procumbent or obliquely ascending branches, or rarely a small tree to about 4 m, monoecious or dioecious. juniperus sabina l. is a medicinal plant used in folk medicine as an abortive. its lignanes  have antineoplastic and antiviral activity, and also essential oil of juniperus sabina l. has shown antibacterial and antifungal activity. the aim of t...

ذخیره‌گاه جنگلی اُرس- شیرخشت اوشان در جنوب البرز مرکزی ازجمله لکه‌های جنگلی ناحیه رویشی ایران- تورانی است که بخشهایی از آن خصوصیات یک اکوسیستم کمتر دست‌خورده را حفظ کرده است. به‌رغم این که این توده جنگلی به‌عنوان ذخیره‌گاه توسط سازمان جنگلها، مراتع و آبخیزداری کشور ثبت شده است، اما متأسفانه آثار تجاوز و ساخت و ساز در حواشی این توده ارزشمند مشاهده می‌گردد. هدف از این پژوهش، شناسایی و مطالعه ویژگی...

ژورنال: جنگل ایران 2016

با توجه به کم بودن مطالعات ساختاری در جنگل‌های اُرس (Juniperus excelsa) در ناحیۀ رویشی ایران-تورانی و لزوم مطالعات ساختاری برای شناخت، احیا و توسعۀ این جنگل‌ها، پژوهش حاضر با هدف بررسی ویژگی‌های ساختاری جنگل‌های اُرس واقع در دامنۀ جنوبی البرز (منطقه آتشگاه شهرستان کرج) انجام گرفت. بدین منظور با طراحی شبکه‌ای با ابعاد 50 ×50 متر و تعیین مختصات تمام درختان به‌روش فاصله-آزیموت، قطر...

Journal: :Molecular ecology 2003
Christopher W Dick Gabriela Etchelecu Frédéric Austerlitz

Tropical rainforest trees typically occur in low population densities and rely on animals for cross-pollination. It is of conservation interest therefore to understand how rainforest fragmentation may alter the pollination and breeding structure of remnant trees. Previous studies of the Amazonian tree Dinizia excelsa (Fabaceae) found African honeybees (Apis mellifera scutellata) as the predomin...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Richard B Thomas Scott E Spal Kenneth R Smith Jesse B Nippert

Using dendroisotopic techniques, we show the recovery of Juniperus virginiana L. (eastern red cedar) trees in the Central Appalachian Mountains from decades of acidic pollution. Acid deposition over much of the 20th century reduced stomatal conductance of leaves, thereby increasing intrinsic water-use efficiency of the Juniperus trees. These data indicate that the stomata of Juniperus may be mo...

Journal: :Journal of medicinal food 2013
Ibrahim Tumen Ipek Süntar Fred J Eller Hikmet Keleş Esra Küpeli Akkol

Ethnobotanical surveys indicated that in the traditional medicines worldwide, several Juniperus species are utilized as antihelmintic, diuretic, stimulant, antiseptic, carminative, stomachic, antirheumatic, antifungal, and for wound healing. In the present study, essential oils obtained from heartwood samples of Juniperus virginiana L., Juniperus occidentalis Hook. and Juniperus ashei J. Buchho...

Journal: :International journal of biometeorology 2015
Landon D Bunderson Estelle Levetin

Juniperus pollen is highly allergenic and is produced in large quantities across Texas, Oklahoma, and New Mexico. The pollen negatively affects human populations adjacent to the trees, and since it can be transported hundreds of kilometers by the wind, it also affects people who are far from the source. Predicting and tracking long-distance transport of pollen is difficult and complex. One para...

Journal: :Research, Society and Development 2023

The aim of this work was to analyze the vegetative propagation Bertholletia excelsa through mini-cutting technique, with aid rhizobacteria mixes. methodology used based on collection roots B. excelsa, from which were bioprospected. From them we formed mixes, for inoculation mini-cuttings in plantings tubes containing commercial substrate, after 90 days they dug up collect data. experiment condu...

Journal: :Österreichische Botanische Zeitschrift 1890

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید