Effects of Land Use on the Mineralization of Organic Matter in Ultisol

Soil organic matter mineralization changed by land-use types is still not clearly understood. In this study, soils from typical including adjacent plantations of bamboo (Bam), camphor (Cam), and tea (Tea) were chosen to systematically investigate the role carbon components microbial community compositions in Ultisol. The followed sequence Bam < Cam Tea. higher contents labile pools Tea than that Bam. content dissolved (DOM) showed order Tea, whereas complexity chemical structure DOM opposite trend. significant shifted bacterial fungal communities, relative abundances or phyla Actinobacteria, Acidobacteria, Firmicutes, Basidiomycota significantly different among types. multivariate regression tree results total and/or C/N ratio dominant factors influencing communities. Moreover, redundancy analysis demonstrated communities bacteria fungi Bam, Cam, tightly linked ratio, pH pool I carbon, DOM, respectively. Pearson’s correlation revealed was correlated with components, but generally compositions, which implied perhaps major determinant controlling