...云杉(Picea asperata)和红桦(Betula albo-sinensis)分别是亚高山针叶林的建群种和先锋树种之一，已成为我国西南亚高山针叶林自然更新过程中的关键种群。
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采用控制环境生长室研究了2个密度水平下CO2浓度升高对红桦幼苗干物质分配与营养的影响，并分析了红桦干物质分配与养分浓度的关系。
The effects of elevated CO2 concentration on dry matter allocation and nutrient contents of red birch seedlings were studied under two planting densities in controlled environment Chambers.
表明西南桦和红椎人工林木材与柞木一样，是一种优良的实木制品用材，适用于制造高档家具与装饰用材等高附加值产品。
This suggests that the three species are all such good materials for solid wood products that they are suitable for manufacturing high value–added products, such as furniture and decorative materials.
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