摘要
依据红松高生长与节间距的相关关系,通过连续6 a次生林冠下栽植红松高生长的实测数据与拍摄节间距读取数据,建立红松树高与节间距的回归方程(R2=0.97-0.99,P<0.001)。利用摄影成像技术获得的节间长度可以准确估算红松树高生长;在红松初植密度为2 500株/hm2的次生林下,林分调整时期第一次应该在第十三年末或十四年初,第二次应该在第十九年末或二十年初。
Based on the correlation between height growth and internode of korean pine,the height growth of korean pine planted under the secondary forest was actually measured and photographed for 6 continuous years. The regression equation between actual height growth and total internode length of korean pine obtained from images was established. The internode could be used to estimate the height of korean pine and the results confirmed that the first thinning period should be at the end of the 13 thyear or beginning of the14 thyear at the initial stand density of 2500 trees·hm^- 2; and the second thinning period should be at the end of the 19 thyear or beginning of the 20 thyear.
出处
《森林工程》
2015年第5期11-14,共4页
Forest Engineering
关键词
红松
调整时期
节间距
korean pine
thinning period
internode
