森林与环境学报2016，Vol.36Issue(3)：325-331,7.DOI:10.13324/j.cnki.jfcf.2016.03.012
基于哑变量的油松人工林和天然林生长模型
Dummy variables models in Pinus tabulaeformis artificial forest and natural forest growth
摘要
Abstract
Studying on Pinus tabulaeformis forest growth process and establishing its growth model can provide an important reference for grasping its growth process more accurately so as to improve forest management. Using the periodically inventory data of P. tabulaeformis in Beijing, on the basis of Richards model, compatible forest growth models of P. tabulaeformis with different stand origins were built through introducing the dummy variables in the model. The results showed that P. tabulaeformis growth models with the dummy variables were better simulation, R2 was as high as 0.938 0, 0.991 8, respectively. The fitting effect of stand volume for P. tabulaeformis was better than its stand basal area, the fitting effect of artificial forest was better than natural forest. With the independent test of established models using validation data, the forecasting precisions of stand basal and volume growth models were higher than 90%.关键词
油松/人工林/天然林/哑变量/生长模型Key words
Pinus tabulaeformis Carr./artificial forest/natural forest/dummy variable/growth models分类
农业科技引用本文复制引用
王少杰,邓华锋,黄国胜,王雪军..基于哑变量的油松人工林和天然林生长模型[J].森林与环境学报,2016,36(3):325-331,7.基金项目
北京市教育委员会科学研究与科研基地建设项目(省部共建重点实验室)；林业公益性行业科研专项(201004008)。 （省部共建重点实验室）
