高黎贡山土壤微生物类群动态特征  

Spatial and temporal characteristics of soil microbial groups in Gaoligongshan

作　　者：张俊忠[1] 张成霞[2] 刘丽[1] 张东华[1] 

机构地区：[1]西南林业大学林学院云南省森林灾害预警与控制重点实验室,云南昆明650224 [2]江苏畜牧兽医职业技术学院园林科技系,江苏泰州225300

出　　处：《草业科学》2013年第7期1002-1006,共5页Pratacultural Science

基　　金：云南省教育厅一般项目(2012Y225);云南省森林灾害预警与控制重点实验室开放基金(ZK10A104)

摘　　要：采集高黎贡山国家自然保护区不同海拔及植被类型下0～20和20～40cm土层的土壤样品,采用微生物常规分析法测定土壤中氨化细菌、芽孢杆菌、硝化细菌、反硝化细菌、好气性固氮菌、嫌气性固氮菌、好气性纤维素降解菌、嫌气性纤维素降解菌和溶磷菌的数量,分析了不同海拔及植被类型下土壤微生物类群数量的分布特征。结果表明,随海拔的升高,土壤微生物类群的总数量呈单峰变化趋势;各土壤微生物类群数量总体表现为氨化细菌>芽孢杆菌>反硝化细菌>好气性固氮菌>硝化细菌>嫌气性固氮菌>溶磷菌>好气性纤维素降解菌>嫌气纤维素降解菌的分布特点;不同植被类型土壤中,微生物类群总数不同,表现为阔叶林>针阔混交林>稀疏灌丛>咖啡地>雪地。The soil samples were collected in different vegetation types and different altitude gradients at depths of 0-20 cm and 20-40 cm in Gaoligongshan. The amount distribution of soil microbial groups with different vegetation types and different altitude were studied by using the microbial incubation meth-ods. The results showed that with the increase of altitude gradients, most of soil microbial groups showed a single peak trend in their quantities, ie, low-high-low. The quantity of soil microbial groups was in the order, ammonifying bacteria 〉 bacillus 〉 denitrifying bacterial 〉 aerobe azotobacte 〉 nitrifiers azotobacter〉phosphorus solubilizing bacteria〉aerobe cellulose decomposing bacteria〉oligotrophic cellu-lose decomposing bacteria. Total numbers of soil microbial groups in different vegetation types was in the order, broadleaf forest〉mixed wood〉shrub forest〉coffee land〉snowfield.

关 键 词：高黎贡山 土壤微生物 垂直动态 分布特征 

分 类 号：S154.3[农业科学—土壤学]