Natural Regeneration of Pinus canariensis Chr. Sm. Ex DC in Buch in Forest Plantations After Thinning
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چکیده
منابع مشابه
Treatments on the Survival of Pinus canariensis Chr. Sm. Ex DC in Buch Planted Seedlings in Arid Zones (Herbivore Protectors-Fertilizers-Mulch- Hydrogels)
A study was designed to provide information about the best plantation techniques for Pinus canariensis in the southern part of Tenerife, at the old pine forest location (precipitation <250mm and 12oC mean annual temperature). Two study sites were selected (Fasnia and Arico); in each site two plots of 5 ha were established. In total, 4 plots were located and in each plot, 32 subplots of 16 x 16 ...
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To examine the effects of thinning intensity on wind vulnerability and regeneration in a coastal pine (Pinus thunbergii) forest, thinning with intensities of 20%, 30% and 50% was conducted in December 1997; there was an unthinned treatment as the control (total 8 stands). We re-measured the permanent sites to assess the regeneration characteristics 11 years after thinning. In the 50% thinned st...
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In order to reveal the constituents and their biological activities, we carried out a phytochemical study on Hedychium ellipticum Buch.-Ham. ex Sm. (Zingiberaceae). Ten labdane diterpenoids (1-10) were isolated from the rhizomes of H. ellipticum for the first time. Their structures were identified on the basis of spectroscopic analyses including two-dimensional NMR and comparison with literatur...
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A method for estimating risk ratios of wind damage for Pinus thunbergii trees and stands was developed based on stem bending theory and coefficients characterizing wind profiles (attenuation coefficients wtr, wst for single tree and stand respectively), distribution of branches (constant ac) and optical stratification porosity (OSP) (extinction coefficient ec). For individual trees, if acs equa...
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Natural regeneration is one of the key aspects of forest sustainability and a tool to decide on restoration programs in forest areas. The purpose of this study was to investigate the quantity of natural regeneration of Acer campestre L. as one of the most important tree species in Arasbaran forests and its relationship with elevation changes and structural characteristics in the natural stands....
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ژورنال
عنوان ژورنال: The Open Forest Science Journal
سال: 2008
ISSN: 1874-3986
DOI: 10.2174/1874398600801010054