桉树人工林地土壤酶活性与营养元素含量关系研究

Studies on the Relationships between the Soil Enzyme Activity and Nutritional Element Contents of Eucalyptus Plantation Lands

运用典范相关分析 (canonicalcorrelationanalysis)对桉树人工林地土壤酶活性和土壤营养元素含量关系的研究表明 ,土壤过氧化氢酶、脲酶和蛋白酶活性与营养元素全P和全N含量关系最大 ,即正效应较大 ,它们对N、P的转化具有重要作用。转化酶活性在一定程度上对土壤养分K、P和Mg含量有一定的负相关作用。“综合土壤酶因子”

The studies show that the relationships between soil hydrogen peroxidase,urease and protease activities and contents of nutrient element total P and total N are biggest,namely,the positive effects are relatively big,they have important effects on N and P transformations.The invertase activities have certain negative correlation effects on soil nutrient K,P and Mg contents to a certain degree. The“integrated soil enzyme factor”may be taken as an index for soil fertility evaluation.