نتایج جستجو برای: forest dependency
تعداد نتایج: 146205 فیلتر نتایج به سال:
Descriptions of spatial patterns are important components of forest ecosystems, providing insights into functions and processes, yet basic spatial relationships between forest structures and fuels remain largely unexplored. We used standardized omnidirectional semivariance modeling to examine the spatial pattern of fuels and forest structure measured in a systematic nested plot grid covering 14...
Forest future depends on forest stands regeneration. Soil is one of the principal capitals in the forest area. It is important to minimize damages to the forest ecosystem during logging operation. In forestry and forest management, it is significant to know the effect of forest logging damages on regeneration, sapling and soil compaction. This study was carried out in Asalem Beech forest area, ...
conclusions atorvastatin may play a protective role in pulmonary fibrosis, with its effects mediated via the station’s antioxidant and anti-inflammatory properties. atorvastatin may be a potential agent for the treatment of lung injury and fibrosis. background pulmonary fibrosis is an idiopathic and chronic inflammatory interstitial lung disease, with a negligible response to available medical t...
objective(s):as far as we know,there has been no report regarding the effects of opium addiction or dependency of both parents on the learning and memory process in offspring. the aim of this study was to examine the learning and memory changes of adult male offspring whose mothers, fathers and/or both parents had dependency to opium before and during pregnancy. materials and methods: all exper...
introduction: depression is one of the most common psychiatric problems. the prevalence of depression in iran has been estimated about 10-35% in females and 5-9% in males. nicotine is a narcotic substance and approximately 22% of american people are dependent on it. one of the notorious outcomes of nicotine-dependency is behavioral problems. the aim of this study was to find the relationship be...
the zagros forests (west of iran) have been highly exploited in recent decades by human impacts. easy access, abundance and variety of valuable forest yields have led to population growth density, creation of new residential areas and deforestation activities. in order to determinate the distribution and rate of deforestation from 1995 to 2006 by using the satellite imagery (irs-1c and landsat...
The three-dimensional structure of a coniferous shoot gives rise to multiple scattering of light between the needles of the shoot, causing the shoot spectral reflectance to differ from that of a flat leaf. Forest reflectance models based on the radiative transfer equation handle shoot level clumping by correcting the radiation attenuation coefficient with a clumping index. The clumping index ca...
Dependency parser is one of the most important fundamental tools in the natural language processing, which extracts structure of sentences and determines the relations between words based on the dependency grammar. The dependency parser is proper for free order languages, such as Persian. In this paper, data-driven dependency parser has been developed with the help of phrase-structure parser fo...
The Brazilian Pampa biome covers half of Rio Grande do Sul state, in the extreme south Brazil, creating an ecotone zone with Atlantic Forest and bordering Pampa’s territory belonging to Uruguay Argentina. is a non-forest mainly composed grasslands mosaics grassland-forest vegetation. This shows significant animal plant diversity, contributing maintenance important ecosystem services, including ...
In forest inventories, the species information is crucial for economical, ecological and technical reasons. Species recognition is currently a bottleneck in practical remote sensing applications. Here, we examined species discrimination using tree-level LiDAR features in discrete-return data. The aim was to examine the robustness and explanatory power of the intensity and height distribution fe...
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