秃杉抚育间伐初步研究

通过对安溪县福前农场造林密度为2 505株.hm-2的9年生秃杉林分设置极强度间伐(60%)、强度间伐(40%)、弱度间伐(20%)及不间伐(对照)4个处理,间伐3 a后,调查林分胸径、树高、单株材积、蓄积量等指标,研究不同间伐强度对其生长量的影响。结果表明:不同间伐强度对林分胸径生长、单株材积、蓄积量的影响都达到显著水平,而对树高生长有一定影响,但差异不显著。综合分析表明,对9年生的秃杉林分,选择强度间伐(间伐总株数的40%)进行抚育间伐较为合适。

A Preliminary Study on the Tending Thinning of of Taiwania flousiana

4 sorts of intensity of controls with extremely strong thinning(60%),strong thinning(40%),and weak thinning(20%) and control without thinning were designed in the 9-years-old Taiwania flousiana forest with the density of 2 505 trees·hm-2 in Anxi Fuqian Forest Farm.After 3 years long of thinning,the stand dbh,height,single-tree volume,stocking indexes were investigated,the effects of different thinning intensities on the growth were studied.The results showed the effects of different thinning intensities on the stand dbh growth,single-tree volume,and stocking were significant,whereas there were a certain effects on the tree height growth,but the differences weren't significant.The synthetic analysis showed it was proper that strong thinning(40% of total thinning tree number) was selected to conduct the tending thinning for 9-years-old T.flousiana stand.