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
高明 1刘奇峰 2朱万才 2潘研2
作者信息
- 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
- 折叠
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(RS),决定系数(R2)、平均相对误差(Eˉ)、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.
Abstract
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 sam-ple plots in the whole eastern forest area of Daxing'an Mountains were used to fit the survey data of 8 natural tree species using 5 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(RS),the coefficient of determination(R2),the average relative error(Eˉ),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 Xy-losma congesta(Lour.)Merr..
关键词
大兴安岭/胸径生长模型/天然林Key words
Daxing'an Mountains/diameter growth model/natural forests引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据