論文

査読有り
2019年11月20日

The Role of Different Earthworm Species (Metaphire Hilgendorfi and Eisenia Fetida) on CO2 Emissions and Microbial Biomass during Barley Decomposition

Sustainability

記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/su11236544

<jats:p>Earthworms are commonly known as essential modifiers of soil carbon (C) and nitrogen (N) cycles, but the effects of their species on nutrient cycles and interaction with soil microbial activities during the decomposition of organic materials remain unclear. We conducted an incubation experiment to investigate the effect of two different epigeic earthworms (M. hilgendorfi and E. fetida) on C and N concentrations and related enzyme activities in agricultural soils with added barley residues (ground barley powder). To achieve this, four treatments were included; (1) M. hilgendorfi and barley, (2) E. fetida and barley, (3) barley without earthworms, and (4) without earthworms and without barley. After 32 days incubation, we measured soil pH, inorganic N, microbial biomass C (MBC), water or hot-water soluble C, and soil enzyme activities. We also measured CO2 emissions during the incubation. Our results indicated the earthworm activity in soils had no effect on the cumulative CO2 emissions. However, M. hilgendorfi had a potential to accumulate MBC (2.9 g kg −1 soil) and nitrate-N (39 mg kg −1 soil), compared to E. fetida (2.5 g kg −1 soil and 14 mg kg −1 soil, respectively). In conclusion, the interaction between soil microbes and earthworm is influenced by earthworm species, consequently influencing the soil C and N dynamics.</jats:p>

リンク情報
DOI
https://doi.org/10.3390/su11236544
ID情報
  • DOI : 10.3390/su11236544
  • ISSN : 2071-1050
  • ORCIDのPut Code : 65794852

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