Abstract

Purpose

The aim of the study was to compare the feeding activity of soil fauna in forest floor soil and in soil layer developing on dead cedar logs in temperate ancient rainforest of North British Columbia (Canada) inlands.

Materials and methods

Bait–lamina test was applied to study the soil fauna feeding activity. On each of ten plots, measurements were conducted on a dead tree trunk (log) and in the typical forest floor soil in the close vicinity (< 10 m) of the log. A range of physicochemical properties of soil was measured for both environments.

Results and discussion

The feeding activity of soil fauna did not differ between log and forest floor soils (paired t test, t = 0.1693). Log soils and forest floor soils did not differ in a range of physicochemical properties measured, that is element content and pH, with the exception of organic matter content, which was significantly higher in log soil than in forest floor soil (p = 0.037).

Conclusions

Soil developing on dead cedar logs creates a similar environment for the development and activity of soil fauna as the organic layer of forest floor soil.

中文翻译：

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北不列颠哥伦比亚省（加拿大）的一个古老内陆温带雨林中死木上发育的土壤动物活动

摘要

目的

该研究的目的是比较北不列颠哥伦比亚省（加拿大）内陆温带古代雨林中森林地表土壤和枯死雪松原木上发育的土壤层中土壤动物的摄食活动。

材料和方法

诱饵-薄层试验用于研究土壤动物的摄食活动。在十个样地中的每个样地上，在枯树树干（原木）和紧邻原木（<10 m）的典型林地土壤中进行测量。在两种环境下都测量了土壤的一系列理化特性。

结果和讨论

原木和林地土壤的土壤动物摄食活性没有差异（配对t检验，t  = 0.1693）。测得的原木土壤和林地土壤在一系列理化特性（即元素含量和pH）上没有差异，除了有机质含量外，原木土壤中的有机物含量明显高于林地土壤（p  = 0.037）。

结论

在枯萎的雪松原木上生长的土壤为森林动物土壤的有机层的生长和活动创造了类似的环境。