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林草资源研究 ›› 2024›› Issue (6): 129-139.doi: 10.13466/j.cnki.lczyyj.2024.06.015

• 技术应用 • 上一篇    下一篇

华北落叶松人工林单木地上生物量相容性模型构建

马媛1(), 王志波2(), 叶冬梅1, 刘凤玲3   

  1. 1.内蒙古农业大学 林学院,呼和浩特 010019
    2.内蒙古自治区林业科学研究院,呼和浩特 010010
    3.内蒙古克什克腾旗林业和草原局,内蒙古 赤峰 024000
  • 收稿日期:2024-05-30 修回日期:2024-10-30 出版日期:2024-12-28 发布日期:2025-04-18
  • 通讯作者: 王志波,副研究员,硕士,主要研究方向为森林培育理论与技术。Email:wang_zb123@163.com
  • 作者简介:马媛,硕士研究生,主要研究方向为森林培育。Email:mayuan00319@163.com
  • 基金资助:
    内蒙古自治区关键技术攻关计划项目“阴山山地华北落叶松人工林提质增效关键技术研究”(2021GG0032)

Construction of Compatibility Models for Aboveground Biomass of Individual Trees in Larix gmelinii var.principis-rupprechtii plantation

MA Yuan1(), WANG Zhibo2(), YE Dongmei1, LIU Fengling3   

  1. 1. Forestry College,Inner Mongolia Agricultural University,Hohhot 010019,China
    2. Inner Mongolia Academy of Forestry Sciences,Hohhot 010010,China
    3. Forestry and Grassland Bureau of Keshiketeng Banner;Chifengshi 02400,Inner Mongolia,China
  • Received:2024-05-30 Revised:2024-10-30 Online:2024-12-28 Published:2025-04-18

摘要:

基于内蒙古苏木山林场44株华北落叶松的生物量实测数据,采用不同测树因子构建单木独立基础模型,并通过3种方法(总量直接控制平差法、总量直接控制联立方程组法和代数和控制法)构建相容性模型,预测单木地上生物量。结果表明:1)对于一元模型,以胸径为自变量的最优独立基础模型和相容性模型的决定系数为0.766~0.943,均方根误差小于20.030 kg,总相对误差在±1.905%范围内,平均相对误差绝对值小于16.905%;各模型预估精度为93.7%~95.6%。2)对于二元模型,以胸径和树高为自变量的最优独立基础模型和相容性模型的决定系数为0.767~0.985,均方根误差小于11.636 kg,总相对误差小于1.893%,平均相对误差绝对值小于16.823%;各模型预测精度范围93.7%~97.9%之间。3)各模型均表现出较好的拟合效果,无显著系统偏差,与样本点的拟合程度较好,预估能力较好。4)各模型均能较好地预测华北落叶松地上生物量,二元模型整体优于一元模型。相容性模型能够有效解决地上总量与各器官分量之间的不相容问题,其中代数和控制法的性能优于其他2种方法。综合考虑建模效率与精度,建议优先采用代数和控制法的二元相容性模型作为该地区华北落叶松人工林的地上生物量优选模型。

关键词: 华北落叶松, 地上生物量, 独立模型, 相容性模型, 联立方程组

Abstract:

Based on the measured biomass data from 44 Larix gmelinii principis-rupprechtii trees in Sumushan Forest Farm of Inner Mongolia,different tree measurement factors were used to construct a single-tree independent basic model and a compatibility model under three methods(total direct control adjustment method,total direct control simultaneous equations method and algebraic sum control method).1)The determination coefficient of the optimal independent basic model and the compatibility model with DBH as the independent variable ranged from 0.766 to 0.943,the root mean square error(RMSE)was less than 20.030 kg,the total relative error was within±1.905%,and the absolute value of the average relative error was less than 16.905%.The prediction accuracy of each biomass model ranged from 93.7% to 95.6%.2)The determination coefficient of the optimal independent basic model,the compatibility model with DBH,and tree height as independent variables was from 0.767 to 0.985,the RMSE was less than 11.636 kg,the total relative error was less than 1.893%,and the absolute value of the average relative error was less than 16.823%.The prediction accuracy of each biomass model was 93.7%~97.9%.3)All models showed a good fitting effect,no significant systematic deviation,strong degree of fit with the sample points,and high prediction accuracy.4)All models could well predict the biomass of Larix gmelinii,var.principis-rupprechtii and the binary model was better than the unary model.The compatibility model could effectively solve the problem of incompatibility between the total aboveground biomass and the components of each organ,and the algebraic and control methods were better than the other two methods.Considering the modeling efficiency and accuracy,it is recommended to use the binary compatible biomass model of algebra and control method as the biomass prediction model of larch plantation in this area.

Key words: Larix gmelinii var.principis-rupprechtii, aboveground biomass, independent model, compatibility model, simultaneous equations

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