湿生中小型土壤动物生物量测定方法

Determination of soil meso-and microfauna biomass

对于体型较小的湿生中小型土壤动物,目前还没有较好的方法可以直接测定其生物量。模型估算法作为一种间接测定法,由于测定费时没有得到广泛应用。因而,目前发表的大部分文献中均缺少湿生中小型土壤动物生物量这一指标。本文采用重铬酸钾容量法和氯仿熏蒸浸提法测定了湿生中小型土壤动物的有机碳含量,同时与模型估算法的测定结果进行了比较。结果表明,重铬酸钾容量法快速,操作简便,适合于大批量样品采集情况下湿生中小型土壤动物生物量的测定。

Because of the smaller body size of soil meso- and microfauna, no methods are prefer-able for the direct determination of their biomass ; while model estimation, as an indirect method, is not widely used due to its time-consuming. Therefore, there is a lack of the index soil meso- and microfauna biomass in most published literatures. In this paper, potassium dichromate volution. The results showed that potassium dichromate volumetry had the advantages of rapid and easily handling, being available for the batch determinations of soil meso- and microfauna biomass.