朝阳地区2树种树冠圆满度与主要生长指标的关系

Relationship among Crown-fullness Ratio & Major Growth Indicators of Two Species in Chaoyang Region

对辽西地区的两大先锋树种油松和杨树的树冠圆满度与其胸径、树高、材积、形数等指标的关系进行调查和研究,结果表明:2树种的树冠圆满度与胸径、树高、材积的相关关系为负相关,与形数的相关关系为正相关;油松树冠圆满度的大小对油松的生长和干形影响很大;杨树树冠圆满度的大小对生长量影响较大,对干形影响较小。

The relationship among crown-fullness ratio of two pioneer species and their DBH ,tree height ,volume , DBH ,slenderness coefficient were investigated .Result shows that ：crown-fullness ratio of two species which is in-versely correlated with DBH ,tree height ,volume is positively correlated with slenderness coefficient ;the size of the crown-fullness ratio for Pinus tabulaeformis have great impact in growth stem form ;the size of the crown-full-ness ratio have great impact on its growth and have less impact on its stem form .