林业科学2023，Vol.59Issue(12)：87-104,18.DOI:10.11707/j.1001-7488.LYKX20220837
基于3-PGmix过程模型的落叶松人工林生长过程表编制
Compilation of Growth and Yield Table for Larch Plantations Based on 3-PGmix Model
摘要
Abstract
[Objective]Larch is the main tree species for afforestation in northeast and north China.Growth and yield tables of larch plantations were compiled to provide the basis for scientific management.[Method]Based on the data of 552 permanent sample plots of larch plantations from the fifth to the eighth national forest inventory and meteorological data in 7 provinces of northeast and north China(Beijing,Hebei,Shanxi,Liaoning,Jilin,Heilongjiang and Inner Mongolia),growth and yield tables were produced for larch plantations with different site levels using 3-PGmix model.[Result]The model parameters of larch plantations were obtained by calibration and validation.The simulated and measured values of stand variables were consistent with each other(R2 was between 0.71 and 0.96).The mean relative errors in terms of stand volume were 5.70%,0.95%,4.70%,and-4.56%for Larix gmelinii,Larix olgensis,Larix principis-rupprechtii and Larix kaempferi,respectively.The RMSE(root mean square error)values were 14.88,12.00,16.74 and 13.11 m3·hm-2,respectively.The growth and yield tables could describe the change of stand variables with age,including stand average DBH,average height,stem density,stock volume,stand biomass,periodical and mean annual increment etc.Results showed the differences in the growth of the four larch species,owing to the difference in suitable conditions,phenological period,growth period and other biological characteristics.The model results are statistically reliable and biologically rational.[Conclusion]The simulation results of the 3-PGmix process-based growth model can be used to produce the growth and yield table of larch plantations,and the study provided a novel way for forest growth and yield table.关键词
落叶松人工林/3-PGmix过程模型/生长过程表Key words
larch plantation/3-PGmix process-based growth model/growth and yield table分类
农业科技引用本文复制引用
解雅麟,雷相东,曾伟生..基于3-PGmix过程模型的落叶松人工林生长过程表编制[J].林业科学,2023,59(12):87-104,18.基金项目
十四五重点研发项目课题"典型人工林立地质量评价与生产力提升技术"(2022YFD2200501). （2022YFD2200501）
