不同林分改造模式对土壤酶活性及微生物数量的影响  

Effects of different forest stand improvement models on soil enzyme activities and microbial population

作　　者：郭雄飞[1] 陈璇[1] 黎华寿[1] 冼丽铧[2] 董奇妤 陈红跃[2] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642 [2]华南农业大学林学与风景园林学院,广东广州510642

出　　处：《中南林业科技大学学报》2015年第9期30-34,共5页Journal of Central South University of Forestry & Technology

基　　金：广东省林业科技创新项目(2008KJCX008-01;2009KJCX011-01;2010KJCX013-01);佛山市南海区农林技术推广中心资助项目(4400-h07145);香港嘉道理农场及植物园公司资助项目(4400-G05002)

摘　　要：以广东省佛山市南海区的4种宫胁法改造林地、传统法改造林地和不进行林分改造的对照样地为研究对象,对不同样地的土壤酶活性和土壤微生物数量进行研究,以探讨不同林分改造类型的土壤生物学特性。结果显示:不同林分改造类型的林地土壤酶活性差异显著,其中宫胁法2和传统法林地土壤酶活性显著高于其它改造类型,宫胁法2改造林地土壤脲酶、磷酸酶和过氧化氢酶活性均居最高水平,宫胁法3和宫胁法4最低;不同的林分改造措施土壤微生物各生理类群的数量差异显著,但均表现为细菌数量最多,放线菌次之,真菌最少;各改造类型中,宫胁法2在土壤细菌、真菌、放线菌数量和微生物总量中均表现最高,宫胁法1在细菌、真菌和微生物总量均表现最低,说明宫胁法2在增加土壤微生物数量上表现最为显著。因此,宫胁法2最有利于改善土壤生物学特性,从而能创造植被恢复过程中良好的微生态环境。In order to investigate the improvement effects of soil biological characteristics in different types of forest stand in Nanhai District, Foshan city, Guangdong province （with 4 kinds of Miyawaki methods, traditional transforming method and no improved）, the soil enzyme activities and microbial population of the sample plots were studied toifnd out the soil biological properties with different forest transforming types. The results show that soil enzyme activities under different stand improvement models was different, of them Miyawaki method No.2 and traditional method had signiifcantly higher soil enzyme activities than those of other improvement models; The activities of soil urease, phosphatase and catalase in the lands transformed with Miyawaki method No.2 were the highest of all, those of Miyawaki method No.3 and Miyawaki method No.4were the lowest; The soil microbial quantity of different physiological groups under differences types of stand improvement measures had signiifcantly differences, but the numbers of bacteria all were the largest, followed by actinomycetes, and that of fungi was the least; The numbers of soil bacteria, fungi and actinomycetes and the sum of microbe in the lands transformed with Miyawaki method No.2 all were the highest of all transformation types while that of soil bacteria and fungi and the sum of microbe in the lands transformed with Miyawaki method No.1 all were the lowest; this indicates that Miyawaki method No.2 performed the best in the ability of increasing soil microbial number. Thus, Miyawaki method No.2 helps to improve the soil biological characteristics, which can create a favorable microenvironment in the process of vegetation recovery.

关 键 词：土壤酶活性 土壤微生物数量 林分改造模式 宫胁法 

分 类 号：S718.52[农业科学—林学] S664.2