The rhizosphere effect on soil gross nitrogen mineralization: A meta-analysis

Rhizosphere effects play crucial roles in determining soil carbon (C) and nitrogen (N) cycling. However, the rhizosphere effect on gross mineralization (Nmin) has not been quantitatively assessed global scale. Here we performed a meta-analysis of compiled data from 24 publications 37 species to synthesize Nmin its influencing factors. We found that significantly enhanced by 81% average. Such was higher woody than nonwoody species, ECM (ectomycorrhizal) associated AM (arbuscular mycorrhizal) species. Moreover, variations were correlated with those C mineralization, phenol oxidase activity root biomass rather other plant (growth form mycorrhizal association) climatic (mean annual temperature precipitation) These results support ‘microbial activation’ N mining’ hypotheses indicate coupling rhizosphere. Overall, these findings provide novel insights into among growth forms associations, improve our mechanistic understanding dynamics