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林木优树的选择方法,有优势木对比法、小样地法、标准地法及连续选择法等.优势木对比法是根据被选出优树的数量指标(材积)和形质指标(干形、冠幅、最粗枝、枝下高等)综合评分划为五个等级;小样地法、标准地法及连续选择法虽然也根据数量指标和形质指标选择优树,但没有进一步把它们划分为等级,究竟哪些最好,哪些较差,还不明朗.本文试用数量化理论(I)即用建立数学模式的方法进行回归估测,把被选出的优树划分出五个等级,为合理利用优树资源提供依据.
Tree selection tree superior trees, there are advantages of wood contrast method, sample method, standard method and continuous selection method, etc. The dominant wood comparison method is based on the number of selected trees to excellent indicators (volume) and quality indicators (dry , The highest score, the highest score, the highest branch score) were divided into five grades. Although the sample selection method, the standard method and the continuous selection method were also based on the quantitative index and the qualitative index, they were not divided further As the level, what is the best and what is not, and it is still not clear.Using the quantitative theory (I), we use the method of establishing the mathematical model to estimate the regression, divide the selected tree into five levels Reasonable use of superior tree resources provide the basis.