نتایج جستجو برای: zagros forests

تعداد نتایج: 40605  

Journal: :Cerne 2021

Background: During the past decade, phenomenon of Oak decline has affected valuable Zagros Forests in western Iran. Quercus brantii as most important tree species these forests been damaged more than any other species. Many factors are involved this phenomenon. The purpose study was to identify areas with high potential for and determine affecting it. In study, using multi-criteria evaluation m...

Journal: :محیط شناسی 0
مجید مخدوم

six catchment areas of fars, where belong to bioclimatic zone of deciduous temperate forests of palearctic realm, first were . surveyed, and mapped (scale:1: 100,000). then, after ecological and socio economic data analysis and integration, the ecosystem map (mapping unit) of the area was depicted (makhdoum 1992). the ecological capability of catchment areas for agriculture, range management, f...

   Decline phenomenon is one of the most important reasons for the destruction and mortality of oak trees in Zagros forests due to the wide variety and diversity of the topography of its determination through track and field operations is not readily possible. Changes in an ecosystem are often gradual changes, but sometimes changes occur in an ecosystem in a short time. This change can cause a ...

Journal: : 2022

Charcoal canker of oak, which has recently increased in southern Iran, could pose a serious threat to the entire forest ecosystem near future. In addition, it seems that climate change and its consequences, such as drought regions have exacerbated this phenomenon. Consequently, objective study was identify fungal pathogens cause charcoal disease oak forests South Zagros. It also sought find ass...

Esmaiel Khosropour Kamran Pourmoghadam Kimia Pourmoghadam, Maziar Haidari,

Physiological factors have effects on most forest parameters such as forest classification so that understanding knowledge about this subject is important to manage forests. The forests of Sorkhake-sanjabi village with area of 1645 ha located in Eslam Abad city, Kermanshah province, Iran were selected. 23 sample plots with rectangular shape (40m*50m) were selected and the species, origin of spe...

Wildlife is an important biological indicator of viability of ecosystems, therefore, understanding habitat requirements of species is essential for biodiversity conservation. Determining the suitability of habitats for wildlife is important for effective management and conservation of species. The brown bear (Ursus arctos), as the largest carnivorous mammal in Iran, is distributed in most fores...

Journal: :journal of agricultural science and technology 2016
h. ramezani a. grafstrom h. naghavi a. fallah sh. shataee

three k-tree distance and fixed-sized plot designs were used for estimating tree density in sparse oak forests. these forests cover the main part of the zagros mountain area in western iran. they are non-timber-oriented forest but important for protection purposes. the main objective was to investigate the statistical performance of k-tree distance and fixed-sized plot designs in the estimation...

2010
Alireza Salehi Ljusk Ola Eriksson

This study aims to present a diameter class model to predict the effects of different forest management practices on growth and yield conditions of the mixed coppice stands of Persian oak (Quercus persica) in the semiarid forests in southern Zagros, Iran. Using inventory data the model was applied to make management recommendations for a forested watershed. Some requested data for the model wer...

2011

Quantified balanced and restored crustal cross-sections across the NW Zagros Mountains are presented in this work integrating geological and geophysical local and global datasets. The balanced crustal cross-section reproduces the surficial folding and thrusting of the thick cover succession, including the near top of the Sarvak Formation (∼ 90 Ma) that forms the top of the restored crustal cros...

Journal: :Iforest - Biogeosciences and Forestry 2021

Different satellite datasets, including multispectral Sentinel 2 and synthetic aperture radar 1 ALOS2, were tested to estimate the Leaf Area Index (LAI) in Zagros forests, Ilam province, Iran. Field data collected 61 sample plots by hemispherical photographs, train validate LAI estimation models. combinations used as input regression models built with following algorithms: Multiple Linear Regre...

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