Impact of black carbon addition to soil on the determination of soil microbial biomass by fumigation extraction

被引：97

作者：

Durenkamp, M. ^{[1
]}

Luo, Y. ^{[2
]}

Brookes, P. C. ^{[1
]}

机构：

[1] Rothamsted Res, Dept Soil Sci, Harpenden AL5 2JQ, Herts, England

[2] China Agr Univ, Coll Resource & Environm, Beijing 100094, Peoples R China

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 2010年 / 42卷 / 11期

基金：

英国生物技术与生命科学研究理事会; 英国工程与自然科学研究理事会;

关键词：

Activated charcoal; Biochar; Biomass C; Biomass ninhydrin-N; Fumigation extraction; CHLOROFORM FUMIGATION; WOOD CHARS; NITROGEN; SORPTION; SURFACE; FOREST; STRAW;

D O I：

10.1016/j.soilbio.2010.07.016

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The efficiency of the fumigation extraction method on the determination of soil microbial biomass carbon and ninhydrin-N was tested in three different soils (UK grassland, UK arable, Chinese arable) amended with black carbon (biochar or activated charcoal). Addition of activated charcoal to soil resulted in a significant decrease in K(2)SO(4) extractable carbon and ninhydrin-N in all three soils, whereas the addition of biochar generally did not. A lower concentration of the extraction reagent (0.05 M vs. 0.5 M K(2)SO(4)) resulted in a significantly lower extraction efficiency in the grassland soil. The extraction efficiency of organic carbon was more affected by black carbon than that of ninhydrin-N, which resulted in a decreased biomass C/ninhydrin-N ratio. The impact of black carbon on the extraction efficiency of soil microbial biomass depended on the type of black carbon, on the concentration of the extraction medium and on soil type. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.

引用

页码：2026 / 2029

页数：4

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