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利用柞蚕蛾制作蜂卡,对大蚕蛾平腹小蜂林间寄生率调查。运用粗糙集方法赋权分析林分不同因子对大蚕蛾平腹小蜂寄生率的影响。结果表明:林龄、郁闭度、坡度等指标权重分别为0.263、0.368、0.368,算得均方根误差(RMSE)为1.081。由此分析认为,在林分因子中,林龄、郁闭度和坡度对平腹小蜂寄生率影响较大。并将粗糙集理论与特尔斐法进行了比较,其中均方根误差(RMSE)降低了2.172%,表明利用粗糙集方法适用于林间寄生效果的评价。
Investigation on the parasitism rate among the bee-bugs of the silkworm moth using the tussah moth to make the bee-card. Rough Sets Analysis of the Influence of Different Factors on the Parasitic Rate of. The results showed that the weights of indexes such as stand age, canopy density and slope were 0.263, 0.368 and 0.368, respectively. The root mean square error (RMSE) was 1.081. According to this analysis, among the stand factors, the stand age, canopy density and slope degree had a great influence on the parasitism rate of Baphicacanthus. The RMSE was reduced by 2.172% compared with the Delphi method, indicating that the rough set method is suitable for the evaluation of the parasitic effects in the forest.