用于划分OTU（operation taxonomic unit），输入数据为DNA序列的距离矩阵，输出为各个水平上OTU的划分情况，以及evenness，richness，diversity index的计算值。可用于文库分析和后期生物信息的分析。-For the delineation of OTU (operation taxonomic unit), input data for the DNA sequence distance matrix, the output level for each OTU delineation, as well as evenness, richness, diversity index calculated values. Can be used for library analysis and post-biological information analysis.