摘要
文章从丹东所辖各县区的落叶松人工林中随机抽取288株落叶松样本,对其胸径(D1. 3)和根径(D0.05)进行实测,采用多模型选优法建立了根径和胸径的相关数学模型。结果显示,选取的三项式、乘幂、指数和对数4个方程的相关指数均大于0. 90,其中三项式曲线方程拟合效果最佳。
In this paper, 288 larch samples were randomly collected from Larix gmelinii plantations in the counties under the jurisdiction of Dandong, and their DBH(D1.3) and the root diameter(D0.05) were measured and the mathematical models of root diameter and DBH were established by multi-model optimization method. The results show that the correlation index of the four equations of trinomial, exponentiation, exponent and logarithm are all greater than 0.90, among which the trinomi?al curve equation has the best fitting effects.
作者
王韦舒
WANG Weishu(Liaoning Forestry Survey and Planning Institute,Shenbei New District 110122,Liaoning Province,China)
出处
《内蒙古林业调查设计》
2019年第2期79-81,共3页
Inner Mongolia Forestry Investigation and Design
关键词
根径
胸径
模型
落叶松
root diameter
breast diameter
model
larch
