Individual and combined effects of earthworms and Sphingobacterium sp. on soil organic C, N forms and enzyme activities in non-contaminated and Cd-contaminated soil

Jia Li, Qing Liu, Si–Yi Chen, Kexue Liu, Yiqing Chen, Mikael Motelica‐Heino, Hesen Zhong, Menghao Zhang, Cevin Tibihenda, Patrick Lavelle, Jun Dai, Chi Zhang, Chi Zhang