Research Article
Small-Scale Variability in the Soil Microbial Community Structure in a Semideveloped Farm in Zambia
Figure 2
Mean ± SD soil contents of NO3−-N and NH4+-N under different land use types. Different letters above the bars indicate significant differences in NO3−-N (lowercase letters) and NH4+-N (uppercase letters) among land use types (one-way ANOVA, ) ( for forest, grassland, watermelon, and maize sites, resp.).