不同立地类型华北落叶松人工林冠幅与胸径关系研究  

Relationship Between Crown Width and DBH of Larix pricipis-rupperchtii with Different Site Types

作　　者：张冬燕[1,2] 王冬至[1] 范冬冬 张健东 李大勇[4] ZHANG Dongyan;WANG Dongzhi;FAN Dongdong;ZHANG Jiandong;LI Dayong(College of Forestry of Hebei Agricultural University,Baoding,Hebei 071000,China;College of Business of Hebei Agricultural University,Baoding,Hebei 071000,China;Saihanba Mechanical Forest Farm of Hebei Province,Weichang,Hebei 068450,China;Mulan Weichang State-owned Forest Farm Administration Bureau of Hebei Province,Weichang,Hebei 068450,China)

机构地区：[1]河北农业大学林学院,河北保定071000 [2]河北农业大学商学院,河北保定071000 [3]河北省塞罕坝机械林场,河北围场068450 [4]河北省木兰围场国有林场管理局,河北围场068450

出　　处：《林业资源管理》2019年第4期69-73,共5页Forest Resources Management

基　　金：河北省教育厅资助科研项目(QN2018125)

摘　　要：以河北省塞罕坝机械林场华北落叶松人工林为研究对象,利用155块标准地(30 m×30 m)调查数据,基于因子分析法和聚类分析法,确定影响华北落叶松人工林冠幅生长主要立地因子,利用主要立地因子划分立地类型,并构建不同立地类型华北落叶松人工林冠幅预测模型。结果表明:海拔、坡度和坡向是影响华北落叶松人工林冠幅生长的主要立地因子,并划分为高海拔和低海拔两个立地类型组。不同立地类型组最优冠幅预测模型分别为:高海拔,CW=-2.5972+0.6211D-0.0098D 2;低海拔,CW=[D/(4.9823+0.2059D)]2。高海拔组与低海拔组:决定系数R 2分别为0.9795和0.9834,绝对误差(Bias)分别为0.0001和0.8259、均方根误差(RMSE)分别为0.0019和0.65718,通过检验表明不同立地类型组冠幅模型预测精度均较高,可为华北落叶松人工林科学经营提供科学依据。The optimal crown amplitude prediction model for Larix principis-rupprechtii plantation was constructed to provide scientific reference for studying its growth and development rules,site quality assessment and productivity prediction.In this study,the plantation of Larix principis-rupprechtii in Saihanba mechanical forest farm in Hebei province was used as the research object.Data from 155 sample plots(30 m by 30 m)were used to classify site types based on the factor analysis and cluster analysis.Constructing crown predication model of Larix principis-rupprechtii plantation on different site types.The results showed that altitude,slope and aspect were the main site factors affecting the crown growth of Larix principis-rupprechtii plantations,and the site types were classified into two ones.According to the determination coefficient R 2 of 0.9795 and 0.9834,respectively,Bias of them were respectively 0.0001and0.8259,and RMSE of them were respectively 0.0019 and 0.65718,a site prediction model of the crown amplitude was determined,and a comprehensive comparative analysis of high altitude CW=-2.5972+0.6211D-0.0098D 2 and low altitude CW=[D/(4.9823+0.2059D)]2 equation predicts the growth of Larix principis-rupprechtii plantation in Saihanba mechanical forest farm,which provides a theoretical basis for the scientific management of Larix principis-rupprechtii plantation.

关 键 词：立地类型 冠幅预测模型 人工林 华北落叶松 胸径 

分 类 号：S757.2[农业科学—森林经理学]