SOIL MICROBIAL BIOMASS AND ORGANIC-MATTER COMPOSITION IN SOILS UNDER CULTIVATION

被引：20

作者：

BEYER, L

机构：

[1] Institute of Plant Nutrient and Soil Science, University of Kiel, Kiel, D-24118

来源：

BIOLOGY AND FERTILITY OF SOILS | 1995年 / 19卷 / 2-3期

关键词：

SOIL ORGANIC MATTER; CULTIVATION CPMAS; C-13-NMR; MICROBIAL BIOMASS; SUBSTRATE-INDUCED RESPIRATION; ALKYLIC CARBON; PH;

D O I：

10.1007/BF00336159

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

To determine whether there is a relationship between the composition of soil organic matter and the activity of the soil microbial biomass, the composition of the organic matter in 12 typical arable soils in Northwest Germany was investigated by wet chemical analysis and CPMAS cross polarization magic angle spinning C-13-NMR spectroscopy. The data were correlated with the microbial biomass as estimated by substrate-induced respiration. A strong correlation between the microbial biomass and alkylic C compounds was observed (r = -0.960***). Recalcitrant substances were enriched in this fraction, which were classified as humic acids according to the wet chemical procedure. The microbial decomposition of these humic acids is probably retarded, due to their chemical structure and/or physical bonding, when the soil microbial biomass activity is limited.

引用

页码：197 / 202

页数：6

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