Study on Final Felling Age of Chinese Fir Plantation With Different Site Index in Guangxi
Abstract
Based on 156 analytic trees’ samples from 128 plots of Chinese fir plantation in Guangxi and 269,810 Chinese fir plantation subcompartments’ data from Guangxi forest management inventory, we researched the growth process of the average tree of Chinese fir plantation with different site index and the rule of density changes of Chinese fir plantation. By optimizing model structure, we established the model of volume growth and the model of technical volume ratio of Chinese fir plantation with different site index and calculated the technical volume and the present value of pure income of each age`s Chinese fir plantation, regarding the maximum present value of annual average net benefits as the judging index of economic maturity age and the economic maturity age as the final felling age. Results show that the final felling ages of Chinese fir plantation with different site index have small difference. The final felling age of Chinese fir plantation with different site index—12, 14, 16, 18, 20 is: 23 years, 23 years, 22 years, 22 years, 23 years, respectively.
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DOI: http://dx.doi.org/10.3968/%25x
DOI (PDF): http://dx.doi.org/10.3968/%25x
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