Results 1 to 10 of about 4,606,695 (285)

Volume quantity and percentage of Beech industrial, fuel and stump timber portions at Caspian Forests of Iran [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2005
The aim of the study was to investigate the volume and amount of the Beech (Fagus orientalis) industrial, Fuel and stump timber portions at west forests of Gilan province in Caspian Region of Iran.
Farrokh Poorshakoori Allahdeh   +1 more
doaj  

Stem taper models for maritime pine plantations in Istanbul Sarıyer Region

open access: yesTurkish Journal of Forestry, 2020
Maritime pine (Pinus pinaster Ait.) is one of the most important tree species in Turkey for establish industrial plantations. In this study, stem taper models were developed for maritime pine plantations in İstanbul-Sarıyer region.
Utkun Karakuyu, Ramazan Ozçeli̇k
doaj   +1 more source

Approximate Minimum Diameter

open access: yes, 2017
We study the minimum diameter problem for a set of inexact points. By inexact, we mean that the precise location of the points is not known. Instead, the location of each point is restricted to a contineus region ($\impre$ model) or a finite set of ...
A Jørgensen   +8 more
core   +1 more source

Comparison of height, diameter and wood production of 14 Poplar clones in Esfahan province [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2008
Poplar trees are the fastest growing trees in the northern hemisphere and it woods is suitable for a variety uses and they are the most important resource of wood production. For this reason they are best plant for wood culture.
Haydar Ali Daneshvar   +1 more
doaj  

Diameter Perfect Lee Codes

open access: yes, 2012
Lee codes have been intensively studied for more than 40 years. Interest in these codes has been triggered by the Golomb-Welch conjecture on the existence of the perfect error-correcting Lee codes. In this paper we deal with the existence and enumeration
AlBdaiwi, Bader F., Horak, Peter
core   +1 more source

Investigation on Adaptability and Quantitative Properties of Redwood (Sequoia sempervirens) in north of Iran, Mazandaran province. [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2004
A 19 year old plantation (4×4m) of Redwood on an area of 0.16 ha was selected in Chamestan Experimental Station in Mazandaran Province (North Iran). Results indicate that mean of diameter at breast height ,height and volume per hectar were 31/8cm ,15/15m
Sayyed Reza Mostafanezhad   +1 more
doaj  

Amount of carbon sequestration distribution associated with oak tree’s (Quercus castaneifolia C.A. May) bole in relation to physiographical units of Hyrcanian natural forests of Iran [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2014
Carbon sequestration rate of forest trees and their spatial pattern are prominent factors which affect global carbon dynamic and can be basically applied to predict climate change.
Ali Asghar Vahedi, Asadollah Mattagi
doaj   +1 more source

Distributed Strong Diameter Network Decomposition

open access: yes, 2016
For a pair of positive parameters $D,\chi$, a partition ${\cal P}$ of the vertex set $V$ of an $n$-vertex graph $G = (V,E)$ into disjoint clusters of diameter at most $D$ each is called a $(D,\chi)$ network decomposition, if the supergraph ${\cal G ...
Elkin, Michael, Neiman, Ofer
core   +1 more source

Effect of weed elimination treatments on survival, growth and important pest population of poplars in the nurseries of Safrabasteh research station, Guilan province [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2009
Poplar is a one of the fast growing and prolific species that is used for afforestation programs. Advising agro-technical methods with attention to ecological aspects is one of the effective and important factors in integrated management of pests.
Parisa Mahammadpour   +3 more
doaj  

Growth and performance of bare and pot rooted seedlings of Loblolly pine (Pinus taeda L.) after plantation [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2005
Seedling production of P. taeda in plastic bags is economically more expensive than bare-rooted method due to limited space for root development (root rotation) and its negative effects on subsequent seedlings growth and performance at field.
Taymour Rostami Shahraji, Amir Bonyad
doaj  

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