期刊
APPLIED SOIL ECOLOGY
卷 97, 期 -, 页码 36-43出版社
ELSEVIER
DOI: 10.1016/j.apsoil.2015.08.004
关键词
MicroResp (TM); Soil microbial activity; Multiple substrate induced respiration (MSIR); Monitoring; Biological indicators; Soil quality
类别
资金
- FP7 Ecofinders project [FP7-264465]
A European transect was established to assess soil microbial activity, using the MicroResp (TM) method, as part of a larger project looking at soil biodiversity and function across Europe. 81 sites were sampled across five biogeographical zones described and mapped in the [EA report (EEA, 2012) and included the following classes; Boreal, Atlantic, Continental, Mediterranean and Alpine, three land-use types (Arable, Grass and Forest) incorporating a wide range of soil pH, soil organic carbon (org C) and texture. Seven carbon substrates were used to determine multiple substrate induced respiration (MSIR), incorporating; acids, bases, sugars and amino acids. Substrates included: D-(+)-galactose, L-malic acid, gamma amino butyric acid, n-acetyl glucosamine, D-(+)-glucose, alpha ketogluterate, citric acid and water. MicroResp (TM) results showed discrimination of land-use type over a large spatial scale and response to soil pH and soil organic carbon. Substrates behaved differently depending upon combinations of land-use and soil properties specifically the greater utilisation of carboxylic acid based substrates in arable sites. (C) 2015 Elsevier B.V. All rights reserved.
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