摘要
利用样地调查资料,对子午岭油松林的更新特征进行了研究。结果表明,子午岭油松林群落总体更新情况良好,有各种幼苗幼树9 000株.hm-2以上;油松在林下的更新潜力也很大,有油松幼苗幼树6 000株.hm-2以上;但在郁闭的油松林林冠下,油松的幼苗幼树很少能长大。其中地径在0.7 cm以上、高度大于80 cm的油松幼树在林下分布很少,更新效果不显著。
By field survey data, the regeneration characteristics of Pinus tabulaeformis forest was investigated. The result showed that there were better regeneration results under close canopies. There were over nine thousoud seedings and small saplings per hectare. P. tabulaeformis have better regeneration potential under close canopies, over six thousoud seedings and small saplings of P. tabulaeformis were observed,but they rarely grew up under close canopies. The number of P. tabulaeformis saplings above 0. 7 cm in diameter and above 80 cm in height is rare under canopies. The condition didn＇t fit P. tabulaeformis regeneration.
出处
《西北林学院学报》
CSCD
北大核心
2009年第5期58-60,共3页
Journal of Northwest Forestry University
基金
国家重点基础研究发展规划项目"西部典型区域森林植被对农业生态环境的调控机理"(2002CB111505)
关键词
油松林
更新特征
子午岭
Pinus tabulaeformis forest
regeneration characteristics
Ziwu Mourtains
