extremely significantP < 0.01
Correlation Analysis of Dry Matter Accumulation, Soil Water Storage and Soil Organic Carbon, Soil Microbial Biomass Carbon and Nitrogen, and Soil Enzyme Activity From Table 3 , dry matter accumulation showed significant ( P < 0.05) or extremely significant ( P < 0.01) positive correlations with organic carbon content, soil microbial biomass carbon and nitrogen, sucrase, cellulase, urease and protease activity.