对油松天然林的林分结构进行了研究。
Natural forest stand structure of Pinus tabulaeformis was studied.
拿奶油松饼时小心点，因为它们容易压坏。
较小的经营密度有利于提高人工油松林胸径生长速率。
Smaller management density was beneficial to increase DBH growth rate of Chinese pine forest.
较小的经营密度有利于提高人工油松林胸径生长速率。
Smaller management density was beneficial to increase DBH growth rate of Chinese pine forest.
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