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Zuheir Shater Sergio de-Miguel Bassel Kraid Timo Pukkala Marc Palahí 《Annals of Forest Science》2011,68(1):149-157
Pinus brutia Ten. subspecies brutia, which occurs in the Eastern Mediterranean region, is the main forest species in Syria and important for multi-purpose forestry.
In this study, 6,631 10-year past growth diameter increment measurements were taken in 83 temporary sample plots. The current
breast height diameter of all trees was measured and a sample of trees was measured for height and age. The plots were placed
so as to capture the whole range of variation in site quality, stand age and stand density. The data were used to develop
the following models:
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Dominant height model: the guide curve method was used to fit an anamorphic site index model between stand age and dominant
height. 相似文献
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Hlne Gondard Franois Romane James Aronson Zuheir Shater 《Forest Ecology and Management》2003,180(1-3):165-174
The objective of this study was to analyze soil surface disturbances resulting from logging tractors, of different types (skidder and forwarder), used for clear-cutting in natural Aleppo pine forests and their consequences on plant species and functional group diversity.
Results indicate that shallow disturbances (litter left in place or removed) were more frequent than deep disturbances (topsoil removed, subsoil exposed, rut exposed) regardless of the logging tractor used. The forests with previously cultivated terraces were the least disturbed. Moreover, with the aid of a functional group analysis we distinguished four plant species response groups to soil surface disturbance types. The mosaic created by these groups after clear-cutting and log removal probably contributes to a rapid auto-regeneration of a mixed plant community similar to that existing just prior to the clear-cutting. 相似文献 3.
Sergio de-Miguel Timo Pukkala Nabil Assaf Zuheir Shater 《Annals of Forest Science》2014,71(1):101-112
? ContextBiomass prediction is important when dealing for instance with carbon sequestration, wildfire modeling, or bioenergy supply. Although allometric models based on destructive sampling provide accurate estimates, alternative species-specific equations often yield considerably different biomass predictions. An important source of intra-specific variability remains unexplained.? AimsThe aims of the study were to inspect and assess intra-specific differences in aboveground biomass of Pinus brutia Ten. and to fill the gap in knowledge on biomass prediction for this species.? MethodsTwo hundred one trees between 2.3 and 55.8 cm in diameter at breast height were sampled throughout the eastern- and southernmost natural distribution area of P. brutia, in Middle East, where it forms different stand structures. Allometric equations were fitted separately for two countries. The differences in biomass prediction at tree, stand, and forest level were analyzed. The effect of stand structure and past forest management was discussed.? ResultsBetween-country differences in total aboveground biomass were not large. However, differences in biomass stock were large when tree components were analyzed separately. Trees had higher stem biomass and lower crown biomass in dense even-aged stands than in more uneven-aged and sparse stands.? ConclusionBiomass and carbon predictions could be improved by taking into account stand structure in biomass models. 相似文献
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