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以湖南省会同县杉木人工林为研究对象,对杉木伐倒木区分段数n与其材积v、平均实验形数fε的相关关系进行了分析,利用回归分析法建立了伐倒木区分段数n与平均实验形数fε的相关关系最优模型为fε=0.425+0.008n-0.001n2+(4.311E-5)n3。通过区分段数n与平均实验形数fε的相关关系散点图,指出最佳适宜段数nc=6。检验结果表明:模型精度高,适用性强,可为确定杉木伐倒木区分求积法的最佳适宜段数提供理论依据。
Taking the Cunninghamia lanceolata plantation in Huitong county of Hunan province as the research object, the correlation between the number of segments in the fallen cedar and the volume v of the cedar were analyzed, and the average experimental form number fε was analyzed. The regression analysis was used to establish the number of sectioned n and the average experimental form The optimal correlation coefficient fε is fε = 0.425 + 0.008n-0.001n2 + (4.311E-5) n3. By means of the scatter plot which divides the correlation between the number of sections n and the average experimental form fε, it is pointed out that the best suitable number of segments nc = 6. The test results show that the model has high precision and strong applicability, which can provide the theoretical basis for determining the best suitable segment for the method of differentiating and differentiating Chinese fir.