| 摘要: |
| 以广东主要乡土阔叶树种樟树、木荷和枫香不同径阶各90株伐倒木为研究对象,以年龄为自变量分起源进行建模,并对其生长规律进行研究。结果表明：(1)在现有立地水平下,广东省樟树、木荷、枫香人工起源的胸径自然生长极值依次为47.8cm、56.6 cm和50.3 cm,天然起源的胸径自然生长极值依次为44.8cm、52.6 cm和43.4 cm；人工起源的树高自然生长极值依次为17.0m、21.5m和20.3m,天然起源的树高自然生长极值依次为13.3m、20.1m和18.1m；人工起源的材积自然生长极值依次为1.437m3、2.161 m3和3.308 m3,天然起源的材积自然生长极值依次为1.177 m3、1.572 m3和1.366 m3；人工起源的胸径、树高和材积自然生长极值均比天然的要高。(2)拟合出樟树人工林胸径、树高和材积的最优生长模型分别为Schumacher、Gompertz和Schumacher模型,樟树天然林胸径、树高和材积的最优生长模型分别为Gompertz、Richards和Logistic模型；木荷人工林胸径、树高和材积的最优生长模型分别为Schumacher、Richards和Logistic模型；木荷天然林胸径、树高和材积的最优生长模型分别为Gompertz、Schumacher和Logistic模型；枫香人工林胸径、树高和材积的最优生长模型分别为Gompertz、Logistic和Schumacher模型；枫香天然林胸径、树高和材积的最优生长模型均为Logistic模型。(3)模型检验采用樟树、木荷、枫香的胸径、树高和材积最优模型的理论值与实际值进行线性拟合,模型拟合效果都非常显著；胸径的R2值在0.6696～0.8745之间,树高的R2值在0.5805～0.8737之间,材积的R2值在0.6148～0.7347之间。 |
| 关键词: 生长模型 起源 立木年龄 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技专项“广东主要碳汇造林树种生物量模型研建”(2015-02)；广东省林业科技创新平台建设项目“广东省碳汇计量监测创新平台建设”(2016CXPT03) |
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| Study on the Growth Models for Main Broadleaved Tree Species in Guangdong Province |
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linliping,Xu Qihu,Luo Yong and Xue Chunquan
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Guangdong Institute of Forestry Inventory and Planning,Guangdong Institute of Forestry Inventory and Planning,Guangdong Institute of Forestry Inventory and Planning,Guangdong Institute of Forestry Inventory and Planning
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| Abstract: |
| In order to establish the growth process models of Cinnamomum camphora, Schima superba and Liquidambar formosana, the main native tree species in Guangdong Province were divided into natural forest and planted forest according to the origin. The growth process models were built with age as the independent variable according to different diameter were randomly selected from 90 sample trees. The results showed that: (1) At the level of the existing site, the extreme DBH of camphora, Schima superba and Liquidambar formosana in planted forest were 47.8cm, 56.6 cm and 50.3 cm, the DBH in natural forest were 44.8cm, 52.6 cm and 43.4 cm; The extreme height in planted forest were 17.0m, 21.5m and 20.3m, in natural forest were 13.3m, 20.1m and 18.1m; The extreme volume in planted forest were 1.437m3, 2.161 m3 and 3.308 m3, in natural forest were 1.177 m3, 1.572 m3 and 1.366 m3. The diameter, height and volume in planted forest were higher than natural forest. (2) The optimal growth fitting model of DBH, height and volume in camphora planted forest were Schumacher, Gompertz and Schumacher model, in camphora natural forest were Schumacher, Richards and Logistic model. The optimal growth fitting model of DBH, height and volume in Schima superba planted forest were Schumacher, Richards and Logistic model, in Schima superba natural forest were Gompertz, Schumacher and Logistic model. The optimal growth fitting model of DBH, height and volume in Liquidambar formosana planted forest were Gompertz, Schumacher and Logistic model, in Liquidambar formosana natural forest were Logistic model. (3) Through the verification of diameter, height and volume of the optimal model of Cinnamomum camphora, Schima superba and Liquidambar formosana,, we can see the that the fitting results between the theoretical value and the actual value were very significant, the DBH R2s were between 0.6696～0.8745, the height R2s were between 0.5805～0.8737,the volume R2s were between 0.6148～0.7347. |
| Key words: Growth process model Origin Tree age |
