摘要
本文对505株辽西北沙地赤松地径(D_(0.1))与胸径(D_(1.3))数据进行回归分析,结果表明:辽西北沙地赤松地径与胸径之间存在明显相关性,采用6种数学模型,进行赤松地径与胸径相关分析,其中三次曲线方程D_(1.3)=-1.068+0.602 D_(0.1)+0.011 8 D_(0.1)~2-0.000 2 D_(0.1)~3为最佳模型。
Regression analysis was carried on the data of diameter( D_(0.1)) and DBH( D_(1.3)) of 505 Pinusdensiflora on sand land of Northwestern Liaoning province. The results showed that there was significant correlation between diameter and DBH with 6 kinds of mathematical models. The curve equation D_(1.3)=-1.068 + 0.602 D_(0.1)+ 0. 0118 D_(0.1)~2-0. 0002 D_(0.1)~3 was the best model.
出处
《吉林林业科技》
2018年第2期17-19,共3页
Journal of Jilin Forestry Science and Technology
基金
国家重点研发计划(2016YFC0500803-04)
关键词
沙地赤松
地径
胸径
建模
Pinusdensiflora
diameter
DBH
modeling
