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油松是我国北方地区的重要造林树种,自然分布很广,分布区内的地理生态条件变化也很大。关于油松林的生长及其与立地条件的关系,解放后曾有人做过一些研究,但多限于局部地区,或限于地形——土壤条件。我们于1978—1979年,对整个油松分布区一些有代表性林区的油松天然林的生长进行了调查。根据这些调查资料,在本文中我们分析了
Pinus tabulaeformis is an important afforestation tree species in northern China. Its natural distribution is very wide, and the geographical and ecological conditions in the distribution area vary greatly. About the growth of Pinus tabulaeformis forest and its relationship with the site conditions, some studies have been done after the liberation, but more limited to some areas, or limited to topography - soil conditions. In 1978-1979, we investigated the growth of natural Pinus tabulaeformis forest in some typical forest areas in the Pinus tabulaeformis distribution. Based on these survey data, we analyze in this article