大兴安岭东部林区天然林主要树种胸径生长模型构建  

Construction of Diameter Growth Models of Major Tree Species in Natural Forests in the Eastern of Daxing'an Mountains

作　　者：高明 刘奇峰 朱万才 潘研 GAO Ming;LIU Qifeng;ZHU Wancai;PAN Yan(Forest Resources Monitoring Center of State Forestry and GrasslandAdministration,Jiagedaqi,Heilongjiang 165000;Heilongjiang Institute of Forestry Science,Harbin,Heilongjiang 150081)

机构地区：[1]国家林业和草原局重点国有林区森林资源监测中心,黑龙江加格达奇165000 [2]黑龙江省林业科学研究所,黑龙江哈尔滨150081

出　　处：《现代农业研究》2024年第6期95-99,共5页Modern Agriculture Research

基　　金：黑龙江省省属科研院所科研业务费项目“基于结构调整的小兴安岭杨桦林优化经营技术”(项目编号:2D2023-01)。

摘　　要：预测大兴安岭地区天然林主要树种胸径生长对未来该地区森林动态监测和规划管理具有重要意义。本研究以大兴安岭东部林区全区1034块三期连续清查数据为研究对象,使用5种常见的模型形式作为基础模型,对8个天然树种调查数据进行拟合,最终构建了8个天然主要树种的胸径预测模型。使用总相对误差(R_(S)),决定系数(R~2)、平均相对误差(■)、预估精度(P)、L值(L)5个指标对8种天然林主要树种的5个拟合模型的拟合效果进行评估。最终结果表明M1模型是樟子松、山杨和黑桦的最优胸径预测模型,M5模型是兴安落叶松、河岸杨柳、云杉、白桦和柞木的最优胸径预测模型。本研究所构建的大兴安岭地区天然林8个主要树种的胸径生长模型拟合效果较好,能有效为未来森林生长动态预测提供支持。Predicting the growth of diameter of major tree species in natural forests in the Daxing′an Mountains is of great significance for future dynamic observation and management of forests in the region.In this study,the survey data of 1034 sample plots in the whole eastern forest area of Daxing′an Mountains were used to fit the survey data of 8 natural tree species using5 common model forms as the base model,and finally the prediction models of chest diameter of 8 natural major tree species were constructed.The fitting effectiveness of the 5 fitted models for the 8 major tree species of natural forests was evaluated using 5 indicators including the total relative error (R_S),the coefficient of determination (R~2),the average relative error (■),the precision of the prediction (P),and the L-value (L).The final results showed that the M1 model was the optimal breast diameter prediction model for Pinus sylvestris var.,Populus davidiana Dode and Betula dahurica Pall.,and the M5 model was the optimal diameter prediction model for Larix gmelinii,Poplars and Willows,Picea asperata Mast.,Betula platyphylla Sukaczev and Xylosma congesta(Lour.) Merr..

关 键 词：大兴安岭 胸径生长模型 天然林 

分 类 号：S758[农业科学—森林经理学]