Spatial characteristics of soil physiochemical properties

soil microbial biomass carbon(SMBC) and soil microbial biomass nitrogen (SMBN) within 10 cm of soil surface in the Huainan reclaimed coal mine area were studied through field investigation and laboratory analysis. Results showed that contents of soil organic matter

nitrogen

phosphorus in cultivated lands(rape

wheat and vegetable greenhouse) were higher than those in woodland

but soil pH value was opposite. The land uses

in order of decreasing SMBC content

were vegetable greenhouse

rape

wheat

woodland and the control. Moreover

the SMBC content in vegetable greenhouse was significantly higher than the other cultivted land uses. The land uses

in order of decreasing SMBN content

were vegetable greenhouse

wheat

rape and woodland. The SMBN content in woodland was significantly higher than the other agricultural land uses. The soil microbial quotient was the highest in woodland

indicating that woodland was more suitable to soil microbial activities and soil organic matter accumulation. There was a significant correlation between the SMBC and SMBN

which further confirms that the SMBC and SMBN can be used as the sensitive factors to characterize the soil fertility.