نتایج جستجو برای: zagros forests

تعداد نتایج: 40605  

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...

Journal: :environmental resources research 0
mojtaba amiri faculty of natural resources, semnan university, semnan, iran. reza naghdi faculty of natural resources, semnan university, semnan, iran davud moghadasi department of natural resources and watershed management of golestan province, gorgan, iran,

the assessment of the quantitative and qualitative changes, the result of the impacts imposed by natural factors, and human interventions during specific sampling periods has a substantial influence on nature, management method and tending operation of every region’s forests. the present research was carried out in golestan province forests (iran) over an 11- year period and the obtained statis...

2013
Jacqueline Austermann Giampiero Iaffaldano

[1] Large topographic belts along convergent margins have been recognized with the ability to slowdown the kinematics of subduction over geologically short time periods (i.e., few Myr), because their associated gravitational spreading provides significant resistive force within the framework of plate tectonics. The record of past and present-day plate kinematics provides important constraints o...

In recent years dieback and decline of oak trees in Zagros forests as an important environmental issue was raised and in many areas has been destroyed trees. In this regard, in order to provide operational strategy to manage this problem and use of the resprouting ability of oak trees. Four hectares of Brant`s oak (Quercus brantii Lindl.) stands in Dasht-e Barm basin of Kazeroon, Fars province,...

جعفرزاده, علی اکبر, مهدوی, علی, میرزایی زاده, وحید, کرمشاهی, عبدالعلی,

In order to optimize the planning and management of natural resources and the environment, it is essential to know the status of land cover changes over the past decades. Modeling land cover change can provide valuable information for better understanding of this process, determining of effective factors and forecasting of regions subject to change. This study aimed to determine and simulate th...

Arash Karami Javad Mirzaei,

Plant diversityis essential to maintain the health of planet's ecosystems. Conservation of biodiversity is necessary for the ecological stability and productivity in natural ecosystems. The aim of this research was to study the biodiversity and richness of plant species (including trees, shrubs and grasses) related to the environmental factors (soil and physiography) in the forests of Zagros, w...

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...

The aim of this investigation was micropropagation of Quercus brantii L. via culture of terminal and lateral buds for mass production of this plant. The plant materials were collected from Fars province Iran in spring and summer seasons. After surface sterilization and the removal of phenol materials from the explants, they were transferred into different culture media containing different conc...

احمدیان, زهرا, تاسه, مجتبی, صیاد, احسان, غلامی, شایسته,

Assessment of forest structure and their spatial patterns are essential for managing and evaluation of forest ecosystems. This study was conducted at the Zagros forests in Kermanshah to evaluate the forest structural characteristics and their spatial distribution. Data was collected from 25 plots (400 m2) in a 100 m × 100 m systematic sampling grid. The spacing between plots was 50 m. In each p...

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