期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 72, 期 8, 页码 2102-2108出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2009.04.023
关键词
Soil biomonitoring; Microbial biomass; Respiration; Spatial variability; Sample storage
资金
- Ministry of Education of the Czech Republic [MSM 0021622412 INCHEMBIOL]
We investigated the effect of soil spatial variability within the sampling site scale, the effects of sample sieving (1, 2 and 4 mm), and storage conditions up to 32 weeks (wet at 4 degrees C, -20 degrees C and air dried) on microbial biomass C, respiration, ammonification and nitrification activities in arable, grassland and forest soil. In general, all results were dependent on soil type. Arable soil showed the highest spatial variability, followed by grassland and forest soil. Sieving did not cause large differences; however, higher biomass C and respiration activity were observed in the 1 mm than in the 4 mm fraction. Storage at 4 degrees C seemed to be the most appropriate up to 8 weeks showing only minor changes of microbial parameters. Freezing of soils resulted in large increase of respiration. Dried storage indicated disruption of microbial communities even after 2 weeks. (C) 2009 Elsevier Inc. All rights reserved.
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