Diameter Distribution of Larch Forests Baesd on Different Thinning Intensity in Changbai Mountain, Northeast China
In this paper, four typical thinning intensity were choose to the larch forests. After thinning, significant differences in stand periodic increment between control and thinning plots appeared. ANOVA indicated significant difference in any stand characteristic among treatments prior to thinning. Information on the distribution of stand characteristics in specific tree-size classes at given is valuable to for managers. So the objective of this study was to develop and compare the two methods (I,e.,Normal distribution and Weibull distribution) for estimating the diameter distribution of larch forests Baesd on Different thinning intensity in Changbai Mountain, Northeast China, the results showed that all the thinning intensity followed the Normal distribution, and the correlation coefficients were above 0.918, but only the middle thinning conforms to the Weibull distribution, the correlation coefficient is 0.929. From chi-test results, the diameter structure simulated in this paper is applied, and with small application error and high precision. This showed that the Normal distribution can be chosen the prediction function for the area with stand structure distribution in the future.
diameter distribution weibull function normal function thinning intensity larch forests
Gu Li Zheng Xiao-xian Liu Dong-lan Ning Yang-cui Ju Wen-zhen
Key Laboratory for Silviculture and Conservation of Ministry of Education College of Forestry, Beijing Forestry University, Beijing 100083, P.R.China
国际会议
太原
英文
169-173
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）