نتایج جستجو برای: diameter increment
تعداد نتایج: 146674 فیلتر نتایج به سال:
Quantifying forest growth and determination of its affective factors are fundamental for forest management. This study examines the effects of biotic and abiotic factors on the diameter increment of oriental beech (Fagus orientalis Lipsky) in a high-elevation forest in northern Iran using permanent sample plots. The aim of this study was identification and quantifying environmental factors such...
In order to investigation the diameter increment of maple tree (Acer velutinum Boiss.) plantations in Mazandaran province , 4.9 hectares of the planted stands in Talokola nursery were selected. A total of 24 trees were randomly selected and increment core were prepared. Calculation of diameter increment was done using meyer,s method. Relationship between incremental quantitative variables was...
Abstract Mixed mountain forests with an uneven-aged structure are characterized by a high tree-growth variability making traditional age-dependent growth models inapplicable. Estimating site productivity is yet another impediment for modelling tree in such forests. Uneven-aged mixed-stand known their resilience, resistance and productivity, being promoted as suitable alternative to even-aged, p...
The relationship between phenology and tree stem diameter increment is largely unexplored in tropical species, especially in wet tropical forests. To explore links between these phenomena, we measured stem diameter increment and phenology of ten canopy tree species from a range of functional types in the Atlantic lowlands of Costa Rica to test for seasonal and interannual patterns. We measured ...
High resolution measurements of stem diameter variation provide a means to study short-term dynamics of tree growth and water status. In this 14-month study, daily changes in stem radius of Eucalyptus globulus Labill. seedlings were measured with electronic point dendrometers in a plantation in southern Tasmania, Australia. The daily patterns of stem expansion and shrinkage were classified into...
چکیده ندارد.
This paper presents distance-independent diameter growth models for Sal (Shorea robusta Gaertn. f.) in Kankali Community Forest, Chainpur VDC, Chitwan. As the basis for modelling, stem discs were cut 0.3 m above-ground for a sample of 80 trees that had recently been felled. Growth rings were measured along four radii and, except for the outer part of a few discs originating from old trees, indi...
It is necessary to calculate the volume increment for estimation of annual allowable cut in forestry plants. In order to compute increment of main species in district one of Dr. Bahramniaʹs forest, firstly, forest divided to four forest zonation based on basal area ratio of tree species including Fageto-Carpinetum, Carpineto-Parroetum, Parrotio- Carpinetum and Mixed types. Then, 140 circular pl...
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