MICROBIAL BIOMASS AND ACTIVITY IN CONTRASTING SOIL MATERIALS AFTER PASSAGE THROUGH THE GUT OF THE EARTHWORM LUMBRICUS-RUBELLUS HOFFMEISTER

被引：125

作者：

DANIEL, O ^{[1
]}

ANDERSON, JM ^{[1
]}

机构：

[1] UNIV EXETER, HATHERLY LABS, DEPT BIOL SCI, EXETER EX4 4PS, ENGLAND

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 1992年 / 24卷 / 05期

关键词：

D O I：

10.1016/0038-0717(92)90209-G

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Earthworms (Lumbricus rubellus) were fed on four different soils with light fraction organic material contents from 3.7 to 76.1% of the soil dry weight, and soil water potentials standardized at -8 kPa. Microbial biomass-C in the soils, as measured with a modified fumigation-extraction method, ranged from 0.4 to 7.5 mg C g-1 soil. After gut passage (6-8 h) microbial biomass-C was not changed significantly but rates of CO2 production, bacterial plate counts, moisture content and concentrations of soluble organic-C were higher in casts compared with the standardized soils ingested by the earthworms.

引用

页码：465 / 470

页数：6