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在辽西地区,大面积集中连片的油松(Pinus tabulaeformis Carr.)人工同龄纯林的经营管理,是该地区林业科技工作者热心关注的课题。对此,笔者曾就其直径分布规律、树高生长预测、自然更新格局、立地类型划分和单株蓄叶量等进行了专题研究,收到了一定的成效。那么,在影响油松树高生长的诸多环境因子之中,气候因子这一重要的非生物生态因子的影响程度如何?仍然不得而知。本文试图用灰色系统理论中的关联度分析方法,定量地研究气候因子对油松树高生长量的影响,并按影响程度的大小排列成序,确定哪些是主要影响因子,哪些是次要影响因子。无疑,这对进一步深入了解油松的生物、生态学特性和提高油松林的经营管理水平,都将是大有裨益的。
In western Liaoning, the operation and management of a large area of Pinus tabulaeformis Carr. Artificial pure forest of the same age is a topic of enthusiastic concern for forestry scientists in this region. In this regard, I have conducted a special study on the law of its diameter distribution, tree height growth forecast, natural renewal pattern, site type classification and individual leaf storage, etc., and received some achievements. So, among the many environmental factors that affect the high growth of Pinus tabulaeformis, it is still not clear how the climatic factor, an important non-biological ecological factor, affects. In this paper, we attempt to study the influence of climatic factors on the height growth of Pinus tabulaeformis by using the method of correlation analysis in gray system theory. According to the order of influence degree, we can determine which are the main influence factors and which are the secondary influence factors . Undoubtedly, this will be of great help to further understand the biological and ecological characteristics of Pinus tabulaeformis and improve the management level of Pinus tabulaeformis forest.