天然云冷杉林土壤养分随林分针阔比变化及其对灌木生物量的影响  

A Study on the Shrub Biomass and Soil Nutrient in Jingouling Natural Spruce-fir Forest

作　　者：季蕾[1] 亢新刚[1] 张青[2] 郭韦韦[1] 

机构地区：[1]北京林业大学林学院,北京100083 [2]北京林业大学理学院,北京100083

出　　处：《西北林学院学报》2016年第5期8-14,28,共8页Journal of Northwest Forestry University

基　　金：国家林业局引进国际先进林业科学技术项目(2013-4-66);"十二五"国家科技支撑计划(2012BAD;22B02-3)

摘　　要：以吉林金沟岭林场天然云冷杉林为研究对象,运用主成分分析、模糊线性隶属度函数法,分析不同土壤养分(pH值、有机质、全N、全P、全K、碱解N、有效P、速效K及土壤综合指标值)含量的差异及变动与林分针阔比的关系及其对林下灌木生物量的影响。结果表明,当林分的针阔比为7∶3时,林地土壤pH值、有机质、全N、全P、全K、碱解N、有效P、速效K均较高,且此时土壤综合指标值最高,土壤养分最好,林下灌木生物量也处于较好的状态。Taking the natural spruce fir forest in Jingouling Forest Farm of Jilin as the research object, using principal component analysis and fuzzy linear membership function method, the dynamics of different soil nutrients （pH,organic matter,total N, total P, total K, alkali solution N, available P, available K, and soil comprehensive index value） and their influences on understory shrub biomass were analyzed. The results demonstrated that when the ratio of coniferous to broad-leaved trees was 7 ： 3 ,the soil pH,organic matter, total N, total K, N and available K were all in high levels, the soil comprehensive index was the highest, and the biomass of understory shrub was in its optimal state.

关 键 词：天然云冷杉林 灌木生物量 土壤养分 

分 类 号：S718.5[农业科学—林学]