Effects of Utilization Methods on C, N, P Rate and Enzyme Activity of Artificial Grassland in Karst Desertification Area

To investigate the effects of different utilization methods on ratio characteristics soil C, N, P and enzyme activities grassland is great significance for sustainable grassland. In this study, rate were investigated in artificial grasslands treated with grazing (GG), mowing (MG) enclosed (EG). The results showed that: (1) contents organic carbon (SOC), total phosphorus (TP) ammonium nitrogen (NH4+-N) EG > GG MG; (TN), alkaline (AN) nitrate (NO3−-N) available (AP) C:N MG GG; C:P N:P EG; (2) β-1,4-Glucosidase (βG) β-1,4-N-Acetylglucos-Aminidase (NAG) MG, acid phosphatase (ACP) was GG, Leucine Aminopeptidase (LAP) C:NEEA C:PEEA N:PEEA (3) redundancy analysis that AN (F = 4.90, p 0.01) an important driver enzymes. We concluded there significant differences P, activity their under uses. closer to standard global ecosystems. Therefore, reducing disturbance optimizing fertilization are effective ways improve maintain good nutrient circulation.