Wood yield estimation in a Hyrcanian forest using ecological carrying capacity concept
Subject Areas : forest
arman sheikh
1
(دانشجوی دکتری، دانشگاه علوم کشاورزی و منابع طبیعی ساری، دانشکده منابع طبیعی، گروه جنگلداری، ساری، ایران)
ali jafari
2
(عضو هیئت علمی، دانشگاه شهرکرد، دانشکده علوم زمین و منابع طبیعی، گروه جنگلداری، شهرکرد، ایران)
hamid jalilvand
3
(عضو هیئت علمی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، دانشکده منابع طبیعی، گروه جنگلداری، ساری، ایران)
Anoshiravan alami
4
(دانشجوی دکتری، دانشگاه علوم کشاورزی و منابع طبیعی ساری، دانشکده منابع طبیعی، گروه جنگلداری، ساری، ایران)
Keywords: Quercus castaneifolia, Wood Yield, Carrying Capacity, Loveh forest, Carpinus betulus, Alnus subcordata,
Abstract :
Utilization based on forest productivity potential is usually considered as part of the close to nature silvicultural methods, which are frequently prescribed to minimize damage to forest stands and natural regeneration. The current research reports the results of implementation of carrying capacity technique for logging procedure in a hornbeam-alder-oak hyrcanian forestss trees, in Loveh, in Golestan province. There are three kinds of carrying capacity. Physical carrying capacity is calculated on the basis of a clear cutting assumption and maximum forest utilization. Excluding snags and young stands and putting the topography, climate and erosion limitations into account, ecological carrying capacity is estimated. Finally management carrying capacity is a portion of ecological carrying capacity, which is feasible to logging from man power and automation point of view. In the long run and for hornbeam, the result of our research indicated a tally of 2700 and 1835 trees and wood volume of 15822 and 10753.1 m3 as physical and ecological carrying capacities respectively. Physical carrying capacity values for alder and oak tree counts were 1184 and 246 trees as well as their correspondent 7340.8 and 1739.22 m3 wood productions. Ecological carrying capacity for alder was 829 trees and 5139.8 m3 wood productions and for oak were 174 trees and 1230.18 m3 wood productions. Overall about 60% of ecological carrying capacity could be regarded as management carrying capacity.s of different disease using paired quadrat covariance showed that trees and dead trees are positively correlated, such that the difference in disease severity between the trees was greater, the co-occurrence was less likely. These results, the pattern of the distribution and development of charcoal disease offers that in the management and reforestation infected forests is applications
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