Journal
SOIL BIOLOGY & BIOCHEMISTRY
Volume 88, Issue -, Pages 294-297Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2015.06.005
Keywords
Carbon; Greenhouse gas; Interaction; Nitrogen cycling; Soil fauna
Categories
Funding
- National Natural Science Foundation of China [41171047, 41371261]
- Key Research Program of the Chinese Academy of Sciences [KZZD-EW-TZ-16]
- Science and Technology Development Program of Jilin Province, China [20140101004JC]
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Soil fauna can significantly affect soil CO2 and N2O emissions, but little is known about interactions between faunal groups and their relative contribution to such emissions. Over a 64-day microcosm incubation, we studied the effects of an epigeic earthworm (Eisenia fetida), mesofauna (Collembola plus oribatid mites) and their combinations on soil CO2 and N2O emissions under two faunal densities. Earthworms significantly enhanced soil CO2 and N2O emissions, while mesofauna only increased N2O emissions. Soil CO2 and N2O emissions were significantly affected by earthworm density, but not by mesofauna density. No significant interactive effects between earthworms and mesofauna were found on soil CO2 and N2O emissions. Our results indicate that earthworms probably play the dominant roles in determining soil CO2 and N2O emissions where they coexist with soil mesofauna. (C) 2015 Elsevier Ltd. All rights reserved.
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