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Chinese Journal of Ecology ›› 2025, Vol. 44 ›› Issue (3): 962-967.

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The regulating effect of millipedes on soil greenhouse gas emissions under the background of nitrogen deposition.

LI Yuanyuan1,2, LIU Xingjie1, CHEN Yueqin2, ZHANG Na1, REN Yuanhao1, RUAN Honghua2*   

  1. (1School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, China; 2Department of Ecology, Nanjing Forestry University, Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing 210037, China).

  • Online:2025-03-10 Published:2025-06-10

Abstract: Atmospheric nitrogen (N) deposition plays an important role in soil greenhouse gas (GHG) emissions. Soil macrofauna activities of feeding, burrowing, and casting affect the biological, chemical, and physical properties of soil. However, the role of soil macrofauna on GHGs under N deposition is not well known. Here, we conducted a microcosm experiment involving two levels of N addition (N0: without N; N+: N addition) and fauna (no fauna and with millipedes). We measured CO2, N2O, CH4 emissions, and soil properties. Millipede and N addition interactively impacted soil CO2 emission. N addition increased soil CO2 emission by 19.4% without millipede, but decreased it by 7.0% with millipede. N addition increased soil N2O emission by 206.6%, and the presence of millipede weakened this effect. Millipede significantly increased soil CH4 emission. Soil CO2 emission had a correlation with soil MBC, DON and NH4+-N; soil N2O emission was correlated with soil DON, soil available N and DOC; soil CH4 emission was correlated with TDN and C/N. Our results highlight the importance of millipedes in regulating soil GHGs emission under N addition.


Key words: soil macrofauna, soil ecosystem, microbial biomass carbon, dissolved organic nitrogen