Objective:To investigat the effects of different altitudes on soil enzyme activity and soil nu-trients in the rhizosphere of wild kiwifruit.Methods:The rhizosphere soil of wild kiwifruit at different altitudes was used as the research object to determine the soil carbon,nitrogen and phosphorus contents and the enzyme activities related to the soil carbon,nitrogen and phosphorus cycle,and to analyse the differences in soil enzyme activities and nutrients.Results:As altitude increased,the activities of acid phosphatase(AcP)and N-acetyl-β-D-glucosaminidase(NAG)+leucine aminopeptidase(LAP)in the soil showed a decreasing trend,but β-glucosidase(β-GC)activity showed an increasing trend.The content of soil nitrogen and phosphorus increased first and then decreased with altitude,and there was a maximum value at the altitude of 1 770 m.The mass fraction of soil water-stable macroaggre-gates at this altitude was significantly higher than that at other altitudes.Redundancy analysis showed that altitude,soil effective phosphorus and soil temperature were important factors affecting soil en-zyme activity and enzyme stoichiometry.Conclusion:Altitude caused changes in soil structure,which affectd soil fertility and regulated the mechanism of enzyme activity in soil.
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