Height–Diameter Models Using Stand Characteristics for Pinus banksiana and Picea mariana
Height–Diameter Models Using Stand Characteristics for Pinus banksiana and Picea mariana
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DOI：
10.1080/02827580410030163
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发表时间：
2004-10
影响因子：
1.8
通讯作者：
Mahadev Sharma;Shu Yin Zhang
中科院分区：
文献类型：
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作者：
Mahadev Sharma;Shu Yin Zhang
利用加拿大安大略北方永久性生长研究样地的数据，研究了短叶松和黑云杉基于林分特征（林分密度、断面积和地位指数）的高径关系。大约一半的数据用于估计模型参数，其余用于模型评价。多个Chapman-Richards生长函数的参数表示在各种林分特征进行拟合，以确定最佳模型预测高度。提供高度最准确预测因子的模型包括断面积、树木ha-1和胸径。纳入网站索引并没有增加预测的准确性。
Height–diameter relationships based on stand characteristics (stand density, basal area and site index) were investigated for jack pine and black spruce trees using the data from permanent growth study plots in northern Ontario, Canada. Approximately half of the data was used to estimate model parameters and the rest was used for model evaluation. Multiple Chapman–Richards growth functions with parameters expressed in terms of various stand characteristics were fitted to determine the best models for predicting height. Models providing the most accurate predictors of height included basal area, trees ha−1 and diameter at breast height. The inclusion of site index did not increase predictive accuracy.