辽宁丹东落叶松根径与胸径相关性研究

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英文篇名：Study on the Correlation Between Root Diameter and DBH of Larix Gmelinii in Dandong of Liaoning Province 作者：王韦舒 英文作者：WANG Weishu;Liaoning Forestry Survey and Planning Institute; 关键词：根径 ; 胸径 ; 模型 ; 落叶松 英文关键词：root diameter;;breast diameter;;model;;larch 中文刊名：NMLD 英文刊名：Inner Mongolia Forestry Investigation and Design 机构：辽宁省林业调查规划监测院; 出版日期：2019-04-04 15:56 出版单位：内蒙古林业调查设计 年：2019 期：v.42;No.182 语种：中文; 页：NMLD201902029 页数：3 CN：02 ISSN：15-1144/S 分类号：85-87

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.

引文

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