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陈元品. 不同坡位的秃杉人工林生长效果分析及优良单株选择[J]. 四川林业科技, 2018, 39(5): 79-81,104. DOI: 10.16779/j.cnki.1003-5508.2018.05.018
引用本文: 陈元品. 不同坡位的秃杉人工林生长效果分析及优良单株选择[J]. 四川林业科技, 2018, 39(5): 79-81,104. DOI: 10.16779/j.cnki.1003-5508.2018.05.018
CHEN Yuan-pin. Analysis on the Growth Effect of Taiwania flousiana Plantation at Different Slope Positions and Plus Tree Selection[J]. Journal of Sichuan Forestry Science and Technology, 2018, 39(5): 79-81,104. DOI: 10.16779/j.cnki.1003-5508.2018.05.018
Citation: CHEN Yuan-pin. Analysis on the Growth Effect of Taiwania flousiana Plantation at Different Slope Positions and Plus Tree Selection[J]. Journal of Sichuan Forestry Science and Technology, 2018, 39(5): 79-81,104. DOI: 10.16779/j.cnki.1003-5508.2018.05.018

不同坡位的秃杉人工林生长效果分析及优良单株选择

Analysis on the Growth Effect of Taiwania flousiana Plantation at Different Slope Positions and Plus Tree Selection

  • 摘要: 对相同坡向不同坡位秃杉人工林的生长量、生物量以及各器官的生物量进行调查研究。21年的试验结果表明,下坡位(海拔415m)秃杉人工林的平均胸径、平均树高和蓄积量对应中坡位(海拔480m)分别增加了45.47%,33.52%及85.85%,对应上坡位(海拔550m)秃杉人工林分别增加了59.52%,44.27%及115.99%。无论是鲜生物量还是干生物量,不同坡位秃杉平均木均表现为:下坡位(海拔415m) > 中坡位(海拔480m) > 上坡位(海拔550m),相同坡向不同坡位各器官分配率均表现为树干 > 叶 > 枝。并筛选出2株秃杉优良单株,与5株优势木对比,胸径、树高及单株材积分别提高了12.88%、10.20%、36.76%;9.68%、6.76%、27.35%。

     

    Abstract: The growth,biomass and biomass of different organs were investigated for Taiwania flousiana plantations at different slope positions.The results showed that average DBH,average height and stock volume of 21-year-old T.flousiana in lower slope (At an altitude of 415 m) increased by 45.47%,33.52% and 85.85% respectively,as compared with that in middle slope (At an altitude of 480 m).And as compared with that in upper slope (At an altitude of 550 m),the data also increased by 59.52%,44.27% and 115.99% in lower slope.The fresh biomass and dry biomass of average trees were listed as lower slope,middle slope and upper slope in descending order,and the distribution rate of each organ in the same aspect was stem,leaf and branch in descending order.Two plus trees were selected,one of which increased by 12.88%,10.20% and 36.76 respctively% in DBH,tree height and individual plant volume,and the other increased by 9.68%,6.76% and 27.35%,as compared with five dominant trees.

     

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