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付梦渠, 左明华. 四川盆地北缘马尾松人工林生长过程研究[J]. 四川林业科技, 2018, 39(1): 72-76. DOI: 10.16779/j.cnki.1003-5508.2018.01.015
引用本文: 付梦渠, 左明华. 四川盆地北缘马尾松人工林生长过程研究[J]. 四川林业科技, 2018, 39(1): 72-76. DOI: 10.16779/j.cnki.1003-5508.2018.01.015
FU Meng-qu, ZUO Ming-hua. A Study of Growth Process of Pinus massoniana Plantation on the North Margin of the Sichuan Basin[J]. Journal of Sichuan Forestry Science and Technology, 2018, 39(1): 72-76. DOI: 10.16779/j.cnki.1003-5508.2018.01.015
Citation: FU Meng-qu, ZUO Ming-hua. A Study of Growth Process of Pinus massoniana Plantation on the North Margin of the Sichuan Basin[J]. Journal of Sichuan Forestry Science and Technology, 2018, 39(1): 72-76. DOI: 10.16779/j.cnki.1003-5508.2018.01.015

四川盆地北缘马尾松人工林生长过程研究

A Study of Growth Process of Pinus massoniana Plantation on the North Margin of the Sichuan Basin

  • 摘要: 为了研究四川盆地北缘马尾松人工林生长过程,在广元市利州区黑石坡林场采集3株平均木进行树干解析,结果表明:马尾松树高连年生长量速生期在6a~15a,连年生长量与年平均生长量均在10 a生时达到最大值,并于14 a生时相交;胸径连年生长量在第10 a和35 a时两次达到峰值,胸径的速生期出现两个阶段,分别在10 a~14 a和30 a~45 a间;材积的连年生长量在40 a生时达到最大值0.024 00 m3,而平均生长量在48 a生时仍未达到最大值,表明材积生长仍未达到数量成熟;利用logistic方程拟合马尾松人工林的胸径、树高和单株材积与林龄的生长方程,分别为YH=19.169 36/(1+exp(-0.087 94×(x-24.549 44))、YD=34.831 04/(1+exp(-0.079 36×(x-33.776 92))、YV=0.636 36/(1+exp(-0.147 32×(x-40.061 83)),拟合精度均在0.98以上,拟合效果显著,预估模型较科学,有实用价值。

     

    Abstract: In order to research the growth process of Pinus massoniana,analysis was made of the stem analyses of Pinus massoniana collected from Heishipo Forest Farm.The results showed that the fast-growing period of current annual increment of tree height was from 6th year to 15th year,and the maximum of current annual increment and average increment appeared in 10-year-old period,and they intersected in 14-year-old period.The fast-growing period of DBH appeared two times,namely,during 10~14 years and 30~45 years.The maximum growth of current annual increment of volume appeared in 40-year-old period,with 0.024 00 m3.The average increment of volume did not reach the peak until the 48-year-old,and the volume did not reach the quantitative maturity.The logistic equation was good to mode the growth of DBH,tree height and volume of Pinus massoniana plantation,the goodness of fit was more than 0.98,fitting effect was obvious.The equations were YH=19.169 36/(1+exp(-0.087 94×(x-24.549 44))、YD=34.831 04/(1+exp(-0.079 36×(x-33.776 92))、YV=0.636 36/(1+exp(-0.147 32×(x-40.061 83)) respectively.

     

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