摘要
通过标准地与林隙调查,研究冀北山地华北落叶松人工林林隙对边界木生长的影响,结果表明:边界木的平均胸径比标准地的平均胸径平均大1.19倍,最大达1.50倍;边界木直径生长率平均值比林分标准木高0.15%,边界木材积平均值比林分标准木大0.004 3 m3。边界木的生长空间指数比标准木高,林隙促进了边界木的生长。
In order to explore the influence of forest gap on gap border trees（GBT） growth of Lor/x principis-rupprechtii Mayr, the forest sample plots and gaps were surveyed. The results showed that the diameter at breast height （DBH） of GBT was 1.19 times than that of sample trees, the highest was 1.5 times. The average growth percentage of DBH of GBT was 0. 15 percent higher than that of sample trees, and average volume of GBT was 0.004 3 m^3 higher than that of sample trees. The growth space index of GBT was higher than that of sample trees, forest canopy gap could promote the growth of the GBT in some degrees.
出处
《河北林果研究》
2008年第4期362-365,共4页
Hebei Journal of Forestry and Orchard Research
基金
河北省林业局资助项目"河北坝上地区退耕还林综合研究"(0103197)
国家科技支撑计划项目(2006BAD24B06)
关键词
华北落叶松
人工林
林隙
边界木
Larix principis- rupprechtii Mayr
plantation
canopy gap
growth
