Natural forest stand structure of Pinus tabulaeformis was studied.

对油松天然林的林分结构进行了研究。

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Stone forest is a kind of tall clints in geomorphologic structure.

石林在地貌上是一种高大的石芽。

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Stone forest is a kind of tall clints in geomorphologic structure.

石林在地貌上是一种高大的石芽。

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