高黎贡山不同土地类型土壤中微生物的生化活性  

THE MICROBIAL BIOCHEMICAL ACTIVITIES IN SOILS OF DIFFERENT LAND TYPES IN GAOLIGONG MOUNTAINS

作　　者：张萍[1] 郭辉军[2] 刀志灵[2] 龙碧云[1] 

机构地区：[1]中国科学院西双版纳热带植物园昆明分部,云南昆明650223 [2]中国科学院昆明植物研究所,云南昆明650204

出　　处：《山地学报》2000年第5期457-461,共5页Mountain Research

基　　金：麦克阿瑟基金!GrantNo .94 -2 84 88A -WER ;云南省科委国际合作计划!GrantNo .95-C -0 0 1。

摘　　要：从高黎贡山不同土地类型土壤的理化特性及微生物特性 ,探讨了不同土地类型生态因子的变化及其对微生物生长代谢的作用 ,以及人类活动对微生物的影响。The Gaoligong Mountains are of momentous significance in biological research and to which attensions have been paid by many researchers because of its manifold forest types and biological resources. But, felling, herding and planting have damaged forests, resulted in deterioration of environment and land, and threatened the forests and biological resources in natural reserve because of increasing population. The variation patterns of soil microbial growth, metabolism and ecological factors, and the effects of the factors on soil microbes in different land types in Gaoligong Mountains were studied. The effects of anthropologic disturbance on soil microbe and nutrient contain were investigated. The aim is to provide scientific basis for forest management and biological diversity protection. Land falls into five types, of original forest, secondary forest, artificial plantation, field and waste land, corresponding to five states of landuse, i.e. original state, secondary forest type for the state of the original forest felled and herded, waste land is the state of forest damaged, and artificial plantation and field are two main use types of forest planted. The 11 soil_specimens from different land types were collected in August-September,1995, and microbial number, biochemical activities and nutrient contains in the soils were determined. The correlations between soil microbe and ecological factors were analysed. The influence of anthropologic disturbance on soil microbe and nutrient contains were discussed. The result shows that soil microbial growth and metabolism were highest under original forests, and decreased from original forests→secondary forests→ Cunninghamia lanceolata plantation, and lowest in waste land of all types. The metabolism activities were all lower in artificial plantations and field. The different degree of correlations were found between variations of ecological factors and soil microbes in different land types. The growth and metabolism of soil microbes were extreme significant

关 键 词：土地类型 微生物 生态因子 人为干扰 生化活性 

分 类 号：Q938.1[生物学—微生物学]