نتایج جستجو برای: buxus trees

تعداد نتایج: 90201  

Journal: :Annales de l'Institut Henri Poincaré, Probabilités et Statistiques 2020

Journal: :ACM Transactions on Algorithms 2023

We consider the design of adaptive data structures for searching elements a tree-structured space. use natural generalization rotation-based online binary search tree model in which underlying space is set vertices tree. This based on simple structure decomposing graphs, previously known under several names including elimination trees, vertex rankings, and tubings. The equivalent to classical e...

سعیدی , زریر , سلطانی, علی, شریعتی نجف آبادی, حسین, گرجستانی‌زاده, شادی,

Forest trees demonstrate different distribution patterns, depend on their living condition (Such as pest infestations). Forest density and epidemic pest concentration are hypothetically among the most influential factors. The current study was carried out on distribution pattern of the orchard ermine (Yponomeuta padella) infested hawthorn trees (Crataegus monogyna) in Bazoft river watershed in ...

Journal: :E3S web of conferences 2023

With the acceleration of urbanization, air pollution is getting worse especially during winter, which causes serious threat to people’s health. Large numbers studies showed that green plants had a significant species on retention particulate matters. In view this, this study selected five evergreen explore dust amounts PM 10 , 2.5 1 per unit leaf area and microstructure surface. The results tha...

Journal: :Electronic Journal of Probability 2018

Pistachio trees (Pistacia) play combined roles in ecotourism, conservation of soil and water, flood control, forage production for domestic and wild animals and resin and seed production in arid and semi-arid areas. It is very important to protect this species but, in recent decades, several factors have caused damaged to these trees. One of the most important factors of Pistacia forest destruc...

حسینی, محسن, مومنی, حورا, یوسف زاده, حامد,

This investigation was conducted to compare the photosynthetic indices in ironwood trees infected by Viscum album L. and healthy trees located both in stand and out of stand in plain forest of Tamishan, Nour city. In each position, five healthy and five infected trees were selected and photosynthetic parameters, stomatal conductance, transpiration and internal CO2 were examined. Results showed ...

نادی, حسین, کیانی, بهمن,

This research was conducted to measure quantitative and qualitative characteristics of trees and to determine amount of annual increment for poplar and plane, specially their volume and wood production beside Zayanderud dam. Two plantation areas with 3×3 meters spacing were selected for sampling after field survey. A 30-years-old poplar and a 30-years-old plane stand. In each stand, five tree l...

افروزنده, علی, عطارد, پدرام, کیانی, بهمن,

Predicting the volume and biomass of multi-stem maple trees (Acer monspessulanum Subsp. cinerascens Boiss.) based on standing traits is necessary in forestry. In this research twenty sample trees were selected in four transects randomly in Bagh-Shadi Forest of Yazd province. After measuring the diameter at root collar (DRC), tree height, stems numbers and crown diameter and area all trees were ...

عالی بیرانوند, فاطمه , عرفانی فرد, سیدیوسف,

Positive and negative (facilitative and competitive) interactions of plants are important issues in autecology and can be evaluated by the spatial pattern analysis in plant ecosystems. This study investigates the intraspecific interactions of Indian rosewood (Dalbergia sissoo Roxb.) trees in Indian rosewood Reserve of Khuzestan province. Three 150 m × 200 m plots were selected and the spatial l...

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