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选择山东沙质海岸不同地段６种主要植物群落类型，分析研究了土壤的脲酶、过氧化氢酶、转化酶和磷酸酶活性以及土壤有机质、有效氮、有效磷含量。结果表明，各种植物群落表层土壤酶活性有高于下层的趋势，但不同植物群落类型表层土壤酶活性存在较大差异，在６种植物群落中，草地的４种酶活性均为最低，其次是黑松纯林，豆科树种刺槐和紫穗槐纯林以及针阔混交林，酶活性有不同程度的提高，尤其是脲酶和磷酸酶活性较高；酶活性与土壤养分的分布关系比较复杂，脲酶和磷酸酶活性与土壤有机质含量有很好的一致性，有效氮和有效磷与脲酶和磷酸酶活性也有一定相关性，过氧化氨酶和转化酶活性与土壤养分的相关性不强。
The types of six main plant communities in different parts of Shandong coast were selected to study the activities of soil urease, catalase, invertase and phosphatase and the content of soil organic matter, available nitrogen and available phosphorus. The results showed that the surface soil enzyme activities of various plant communities tended to be higher than those of the lower layer. However, there were significant differences in soil enzyme activities between different plant community types. Among the six plant communities, the four enzyme activities of grassland were the lowest, followed by Is pure Pinus thunbergii, Robinia pseudoacacia and Amorpha fruticosa pure forests and coniferous and broad-leaved mixed forest, the enzyme activity increased to varying degrees, especially urease and phosphatase activity; enzyme activity and the distribution of soil nutrients more complicated , Urease and phosphatase activities were in good agreement with soil organic matter content. Available nitrogen and available phosphorus were also correlated with urease and phosphatase activities. The correlation between peroxidase and invertase activities and soil nutrients was not strong.