摘要
本文用在陕西主要林区调查的油松标准地、标准木材料,就树冠率和平均高对相对干形的影响进行了研究。结果为:树冠率和平均高对油松相对干形影响不显著。油松相对于形具有稳定性,其平均值可在实践中广泛应用。
Effects of crown ratio and mean height on the relative stem form were studied by sample plots and sample trees for Pinus tabulaeformis in main forested region of Shaanxi.The result Showed that effects of crown ratio and mean height on the relative stem form were not significant.The re- lative stem form is stable,and its means can be widely used in practice.
出处
《陕西林业科技》
北大核心
1991年第2期53-58,共6页
Shaanxi Forest Science and Technology
