Based on a large amount of investigating data, the authors use cluster analysis method with ordered samples to set dividing standards for the growth rate of secondary forests rechange.
依据大量的调查资料，应用有序样本聚类方法，按林分类型、立地条件和林龄来确定次生林改造生长量划分标准；
A new comprehensive evaluation system based on congregating approach of growth elements analysis, cluster analysis and AHP is presented in the paper.
将贡献于经济增长的因素用来构造指标体系，综合了增长因素分析、AHP、综合指标评价和聚类分析，构造一种新的综合评价系统。
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