The responses of CO2 emission to nitrogen application and earthworm addition in the soybean cropland 1School of Life Sciences, Henan University, Henan, China 2Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem, Xinyang Academy of Ecological Research, Xinyang, China DOI 10.7717/peerj.17176 Academic Editor Leonardo Montagnani Subject Areas Agricultural Science, Ecology, Microbiology, Soil Science, Biogeochemistry Keywords Bacterial community, Earthworm, Nitrogen...