三种重要值计算方法的比较分析

Comparative Analysis of Three Different IV Analyzing Methods

本文根据利用三种重要值计算方法分别对2012年8月初所获得的13个监测点中的各个群落进行重要值的计算,通过对三种重要值计算方法所得重要值的结果进行比较,希望从三种重要值计算方法中找到一种具有广泛适应性及计算简便性的重要值计算方法。根据所得结果可知,重要值计算方法中的第三种计算方法更为合理,即重要值=(相对株数+相对高度+相对干重)/3,此计算公式更适应草原区的物种群落重要值计算,且简单可行,人为误差相对较小。

We analysed the importance value of different communities in 13 abservation sites using 3 different method. The data was collected in the beginning of August in 2012. By comparing the results of the 3 different importance value analyzing methods,we expected to get a pervasive and practicable method to analyse the importance value in different communities. As the result shows,the third method that IV =( Relative Density + Relative Heignt + Relative Drymass) /3 is the most reasonable and practicable one.