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调查被伐林木伐桩,推算林木材积,是林业生产实践中较为重大的问题。通常通过伐桩处的直径编制一元数表来计算被伐木的材积,这样存在着严重的偏差,将产生调查数据失真,将导致决策失误。充分利用伐桩的信息,建立三元变量数学模型,有利于提高森林资源调查数据的准确性和可靠性,可为相关科学决策提供比较真实的数学模型。
Investigation by logging deforestation pile, calculate the volume of forest timber, forestry production practice is more important issue. The logarithm of the amount of logging material is usually calculated from the diameter of the stump at the stump. This leads to serious deviations which will result in the distortion of the survey data, which will lead to mistakes in decision-making. Taking full advantage of the information of stumps and establishing the mathematical model of ternary variables can improve the accuracy and reliability of forest survey data and provide a more realistic mathematical model for related scientific decision-making.