Li Wang, Xuesong Luo, Hao Liao, Wenli Chen, Dan Wei, Peng Cai, QiaoyunHuang,Ureolytic microbial community is modulated by fertilization regimes and particle-size fractions in a Black soil of Northeastern China, Soil Biology and Biochemistry, 116, 2018, 171-178.
Ureolytic microbes are important contributors to N cycling in soil. The distribution of the ureolytic microbial community in different particle-size fractions (2000-250, 250-53, macroaggregate > silt + clay. Additionally, urease activities were correlated with the TN, TC and soil organic carbon (SOC) concentrations, but not with the abundances of the ureC genes. In summary, our study first revealed the heterogeneity in the ureolytic microbial communities and activities across different particle-size fractions under long-term fertilization. Microaggregates seems to be a “hotspot” for nutrients, ureolytic microorganisms and urease activity.