摘要
通过实测不同立地条件、不同年龄的池杉、水杉、湿地松和杨树人工林的地径、胸径和树高,建立了地径估测林木材积的数学模型。所有的模型都进行了回归分析t、检验、相关性分析,结果表明所有模型都有很高的可靠性、稳定性,同时经过适应性检验,其系统误差低于3%,符合有关规定。可应用于森林资源管理和森林生态系统研究。
Based on the data of the ground diameter,the diameter at breast height（D.B.H）,the height and the volume of trees from forest plantations of Taxodium ascendens,Metasequoia glyptostroboides,Pinus elliottii and Populus which were planted under different sites and at different ages,the timber volume estimation models of ground diameter were established.All of the models were made regression analysis,t test,correlation analysis and the results indicated they have good predictive ability and reliability and validity and have high correlation coefficient.Test of adaptability（systematic error below 3%） was compliance.So those models were recommended for the forest resources management and forest ecosystem research.
出处
《江西林业科技》
2010年第6期22-26,共5页
Jiangxi Forestry Science and Technology
关键词
地径
林木
材积
估测模型
Ground diameter
Wood
Timber volume
Estimation model
