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河北塞罕坝樟子松人工林生长及碳储量的变化
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Change of growth characters and carbon stocks in plantations of Pinus sylvestris var. mongolica in Saihanba, Hebei, China
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图3. 2006年和2016年樟子松人工林胸径频率分布。 |
Fig. 3. Diameter at breast height (DBH) frequency distribution in Pinus sylvestris var. mongolica plantation in 2006 and 2016. |
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