文献类型：期刊文献

中文题名：干扰树间伐对马尾松人工林目标树生长的初期效应

英文题名：Initial Effects of Crop Trees Growth after Crop Tree Release on Pinus massoniana Plantation

作者：王懿祥[1,2] 张守攻[2] 陆元昌[3] 孟京辉[4] 曾冀[3]

第一作者：王懿祥

机构：[1]浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室;[2]中国林业科学研究院林业研究所;[3]中国林业科学研究院资源信息研究所;[4]北京林业大学林学院

年份：2014

卷号：50

期号：10

起止页码：67-73

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金："十二五"国家科技支撑计划项目(2012BAD22B0503);浙江省重点科技创新团队项目(2010R50030-15);浙江农林大学科研启动基金项目(2013FR015)

语种：中文

中文关键词：干扰树间伐;近自然森林经营;目标树;间伐;马尾松

外文关键词：crop tree release; close-to-nature siviculture; crop trees; thinning; Pinus massoniana

分类号：S753.7;S758.8

摘要：2007年10月在相同林分条件的14年生马尾松人工纯林中进行干扰树间伐,在间伐和对照地块各建立固定样地20块,并于2010年11月进行复测。基于间伐试验后的3年数据,研究干扰树间伐对目标树胸径、树高、枝下高、冠幅直径和材积生长的影响。结果表明:干扰树间伐前后,目标树生长均明显快于非目标树;干扰树间伐后3年,目标树的胸径生长量和材积生长量分别高于未间伐林分目标树的80%和55%,树高生长则差异较小,枝下高生长明显减慢,冠幅直径生长年均提高0.44 m,同时林分内较大径级的林木数量增加;随着目标树自由生长方向数的增加,目标树的胸径和材积生长增加,树高和枝下高生长没有明显的规律性;影响目标树生长的决定因素是目标树自由生长方向数。因此,间伐不应该仅仅注重间伐强度,而且要注重哪些林木(即干扰树)应当被间伐,以便目标树生长得更好。
Crop trees were selected and released in a 14-year-old even-aged Pinus massoniana stand in Guangxi in October 2007,in which 20 plots for no cut as control and 20 plots for thinning were set up and all plots were remeasured in November 2011. Three-year increments of DBH,height,clear bole height,crown width and volume of crop trees were observed to demonstrate the growth effects of crop tree release treatment on crop trees. Results indicated that the growth of crop trees was significantly greater than non-crop trees. The 3-year DBH and volume increments of released crop trees were80% and 55% higher than that of unreleased trees in control stand,respectively,while the height growth difference decreased and clear bole height increment significantly decreased. DBH and volume increments increased with an increase in the number of sides of the crown that was measured as free-to-grow（ FTG）. However,the increments of height and clear bole height had no obvious rules with the increase of FTG. FTG is the determinant reason that affects the crop trees growth instead of thinning intensity. It suggested thinning should not just focus on thinning intensity,but also pay attention to which tree（ i. e. interference tree） should be cut in order to make crop tree growth faster and healthier.