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以196块样地460株华北落叶松为素材,分析研究内蒙古赤峰市旺业甸林场的落叶松人工林地位级导向曲线模型。通过林业统计分析软件SPSS18.0对华北落叶松人工林数据进行拟合、分析比较,结果表明:从拟合精度、曲线走向与散点分布趋势、残差分布等综合考虑,Mitstcherlich导向曲线函数比较适合落叶松人工林地位指数级导向曲线模型的拟合。以回归的Mitstcherlich模型为基础,选用基础树龄为30年的落叶松人工林,按经营水平确定指数级距为2m,确定12个地位级,并绘制地位级曲线簇,编制形成内蒙古赤峰市旺业甸林场华北落叶松人工林的12级地位级表。
460 stands of Larix principis-rupprechtii in 196 plots were used to study the position-level guide curve model of Larix principis-rupprechti plantation in the Wangyidian forest farm of Chifeng, Inner Mongolia. The data of Larix principis-rupprechtii plantation were fitted and analyzed by SPSS18.0 software. The results showed that compared with fitting accuracy, trend of curve and trend of scatter distribution and residual distribution, Mitstcherlich function of guide curve was compared Fitting of Index - oriented Guidance Curve Model Suitable for Larix gmelinii Plantation. Based on the regression model of Mitstcherlich, the larch plantation with the basal age of 30 years was selected. According to the management level, the index level distance was determined to be 2m, the 12 status levels were determined, and the status-level curve cluster was drawn to form a prosperous industry in Chifeng, Inner Mongolia 12 - grade table of Larix principisrupprechtii Mayr. Plantation in.