Modelling growing space of four valuable broadleaved tree species in southern China
We present management tools for growing four valuable broadleaved tree species, indigenous to subtropi.cal southern China. Crown diameter (CD) of the species studied can be predicted very well by using a model that is so e y a near funct on of d ameter at breast he ght (DBH). The add t on of tree ag...
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Published in | 中国林学:英文版 no. 3; pp. 167 - 178 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2013
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Subjects | |
Online Access | Get full text |
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Summary: | We present management tools for growing four valuable broadleaved tree species, indigenous to subtropi.cal southern China. Crown diameter (CD) of the species studied can be predicted very well by using a model that is so e y a near funct on of d ameter at breast he ght (DBH). The add t on of tree age (AGE) and yield class (YC) to this-nodel did not significantly improve its predictive capacity. We used species-specific crown diameter models to calcu- ate the amount of growing space and subsequently stand density that each species needs to achieve desired stem "adial growth rates. Furthermore we used this information to calculate a "distance factor", a rule of thumb that roughly ~stimates the distance between two neighboring trees needed to achieve a desired future target diameter. These tools 'acilitate the planning of thinning regimes by using crown diameter models combined with annual radial growth rates to ;alculate the number of crop trees per hectare required to reach a desired target stem diameter. |
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Bibliography: | 11-3919/S crown diameter, diameter growth, growth model, valuable timber, management tool We present management tools for growing four valuable broadleaved tree species, indigenous to subtropi.cal southern China. Crown diameter (CD) of the species studied can be predicted very well by using a model that is so e y a near funct on of d ameter at breast he ght (DBH). The add t on of tree age (AGE) and yield class (YC) to this-nodel did not significantly improve its predictive capacity. We used species-specific crown diameter models to calcu- ate the amount of growing space and subsequently stand density that each species needs to achieve desired stem "adial growth rates. Furthermore we used this information to calculate a "distance factor", a rule of thumb that roughly ~stimates the distance between two neighboring trees needed to achieve a desired future target diameter. These tools 'acilitate the planning of thinning regimes by using crown diameter models combined with annual radial growth rates to ;alculate the number of crop trees per hectare required to reach a desired target stem diameter. |
ISSN: | 1008-1321 1993-0372 |