基于单木过程模型的杉木林分生长模拟研究

基于林分尺度的3-PG模型原理，在考虑单木林分生理生态过程的基础上，改进了生物量积累和分配子模型，建立适应于单木生长的生理生态过程模型，实现基于单木过程模型的林分生长预测。选择胸径和树高生长量2个指标与实测值对比分析，结果表明：改进模型对胸径和树高生长量的模拟平均精度分别为95．57％和91．16％，均明显高于3-PG模型对应的89．4％和85．18％的平均模拟精度，改进模型的模拟精度显著提高，模拟效果更好。...

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Bibliographic Details
Published in林业科学研究 Vol. 28; no. 4; pp. 551 - 556
Main Author 马莉燕 张怀清 李永亮 郭明春 张晔珵
Format Journal Article
LanguageChinese
Published 中国林业科学研究院资源信息研究所,北京,100091%河北科技师范学院园艺科技学院,河北秦皇岛,066004 2015
Subjects
3-PG模型
单木生长模拟
杉木林分生长
杉木林分生长
stand growth
3-PG模型
Chinese fir
单木生长模拟
3-PG model
individual tree growth model
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ISSN1001-1498

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Summary:基于林分尺度的3-PG模型原理，在考虑单木林分生理生态过程的基础上，改进了生物量积累和分配子模型，建立适应于单木生长的生理生态过程模型，实现基于单木过程模型的林分生长预测。选择胸径和树高生长量2个指标与实测值对比分析，结果表明：改进模型对胸径和树高生长量的模拟平均精度分别为95．57％和91．16％，均明显高于3-PG模型对应的89．4％和85．18％的平均模拟精度，改进模型的模拟精度显著提高，模拟效果更好。
Bibliography:The biomass production model and distribution model were improved based on 3-PG model theory, so as the individual tree growth model could be established to achieve the growth forecast of the Chinese fir （ Cunning- hamia lanceolata） stand. In this study, the diameter at breast height （DBH） and height （H） were used to evaluate and compare the results of the model simulation and field data. It showed that the average analog preeisions of DBH and H of the improved model were respectively 95.57% and 91.16%, significantly higher than that of the 3-PG model, whose precisions were 89.4% and 85.18%. The simulation accuracy of the improved simulation model was signific.antly higher, and the simulation results were better.
11-1221/S
3-PG model; individual tree growth model; Chinese fir; stand growth
MA Li-yan , ZHANG Huai-qing , LI Yong-liang , GUO Ming-chun, ZHANG Ye-cheng（ 1. Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China; 2. College of Horticulture Scien
ISSN:1001-1498