natural pinus tabulaeformis forest
natural Pinus tabulaeformis forest 天然油松林 收藏 natural secondary Pinus tablaeformis forest 天然次生油松林 收藏 .
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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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Based on survey resources in the past years, natural forest stand structure of Pinus tabulaeformis in Machibei was studied.
依据历年调查资料，对麻池背油松天然林的林分生长结构进行了研究。
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