Response of Soil Enzymes Activities and Microbial Biomass Carbon and Nitrogen Characteristics to Planting Years of Aralia elata
In this study,using the soil(0 to 30 cm)with Aralia elata planting for 2,5 and 10 consecu-tive years as test material,the interannual changes of soil enzymes activities and soil microbial biomass carbon and nitrogen and their correlations were analyzed with a view to providing references for growth,cultivation and management of A.elata.The results showed that planting year of A.elata had significant effects on soil enzymes activities.The activity of soil urease and phosphatase showed decreasing trends with the extension of planting years,while that of sucrase showed the opposite trend.As a whole,the activities of urease,phosphatase and sucrose were higher in surface soil compared to deep soil.The contents of soil microbial biomass carbon and ni-trogen mostly showed significantly downward trends with the extension of planting years,and their average con-tents were higher in surface soil compared to deep soil.Under different planting years,soil microbial biomass carbon and nitrogen contents and soil enzymes activities were mostly correlated positively.To sum up,there were obvious differences in soil physical and chemical properties with different planting years of A.elata;the longer the planting year was,the lower the soil urease and phosphatase activities and the microbial carbon and nitrogen contents were;and the soil enzymes activities also had a certain response relationships with the dy-namic change of the microbial carbon and nitrogen contents.
Aralia elataSoil enzymes activitiesMicrobial carbon and nitrogenPlanting year
万方数据
维普
