Figure 9 | Scientific Reports

Figure 9

From: Nitrogen Fertilization Elevated Spatial Heterogeneity of Soil Microbial Biomass Carbon and Nitrogen in Switchgrass and Gamagrass Croplands

Figure 9

Spatial distribution of soil MBC, MBN concentrations and MBC:MBN under three N fertilization treatments (i.e. NN, LN and HN) in GG cropland soil in a three-year long fertilization experimental site at the Tennessee State University (TSU) Agricultural Research Center in Nashville, TN, USA. The interpolation maps were produced by inverse distance weighting (IDW) method. The abbreviations are referred to Table 1.

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