作　　者： ; ; ; ; ;

机构地区： 华南农业大学林学院

出　　处： 《中南林业科技大学学报》 2008年第4期98-100,共3页

摘　　要： 对常绿阔叶混交林地、常绿针阔混交林地和杉木林地这3种人工幼林的土壤微生物和酶活性进行了研究,结果表明:土壤细菌数量大小排序为常绿阔叶混交林地>常绿针阔混交林地>杉木林地,真菌数量为常绿阔叶混交林地>杉木林地>常绿针阔混交林地,放线菌数量为常绿针阔混交林地>常绿阔叶混交林地>杉木林地,表明常绿阔叶混交林的土壤有利于微生物的发育;脲酶活性为常绿阔叶混交林地>常绿针阔混交林地和杉木林地,磷酸酶活性为常绿针阔混交林地>杉木林地>常绿阔叶混交林地,过氧化氢酶活性为常绿阔叶混交林地>常绿针阔混交林地>杉木林地,表明常绿阔叶混交林地能够供给土壤微生物较多的营养物质,从而提高了土壤酶的活性. A study was made of the soil microorganisms and enzyme activities in an evergreen broadleaf mixed plantation, an evergreen coniferous broadleaf mixed plantation and a Cunninghamia lanceolata plantation. The results show that for soil bacteria in amount, evergreen broadleaf mixed plantation 〉 evergreen coniferous broadleaf mixed plantation 〉 Cunninghamia lanceolata plantation; that for soil fungi in amount, evergreen broadleaf mixed plantation〉Cunninghamia lanceolata plantation〉evergreen coniferous broadleaf mixed plantation; and that for soil actinomyces in amount, evergreen coniferous broadleaf mixed plantation〉 evergreen broadleaf mixed plantation〉Cunninghamia lanceolata plantation, indicating that the soil of evergreen broadleaf mixed plantation is favorable to microorganism development. The results also show that for urease activity, evergreen broadleaf mixed plantation〉evergreen coniferous broadleaf mixed plantation and Cunninghamia lanceolata plantation; that for activity of phosphoric acid enzyme, evergreen coniferous broadleaf mixed plantation 〉Cunninghamia lanceolata plantation〉 evergreen broadleaf mixed plantation; and that for catalase activity, evergreen brOadleaf mixed plantation〉evergreen coniferous broadleaf mixed plantation〉 Cunninghamia lanceolata plantation, indicating that evergreen broadleaf mixed plantation can provide a great deal of nutrients for soil microorganisms, thus increasing its soil enzyme activity.

关 键 词： 微生物学 生态公益林 土壤微生物 土壤酶 人工幼林

领　　域： [农业科学]