生态学杂志2025，Vol.44Issue(1)：11-20,10.DOI:10.13292/j.1000-4890.202501.049
不同林龄杉木人工林土壤微生物生物量与酶活性特征的影响机制
Characteristics and influencing mechanisms of soil microbial biomass and enzyme activities in Cunning-hamia lanceolata plantations with different stand ages
摘要
Abstract
Understanding changes in soil microbial biomass and enzyme activities with stand development is crucial for post-afforestation management.Here,we examined the changes in microbial biomass carbon,nitrogen,extracel-lular enzyme activities and their association with environmental factors in different soil layers(0-10,10-20 and 20-40 cm)in Cunninghamia lanceolata plantations of different stand ages(5,8,21,27 and 40 years old)in the southern Wuyi Mountains,China.The results showed that soil microbial biomass carbon and nitrogen increased sig-nificantly with stand development.Soil enzyme activities showed a unimodal trend.Specifically,cellulose hydro-lase,glucosidase,β-N-acetylglucosaminidase and acid phosphatase activities peaked in 8 years old stand,whereas polyphenol oxidase and peroxidase activities peaked in 21 years old stand.Soil microbial biomass carbon and nitro-gen and enzyme activities decreased with increasing soil depth across all stand ages.Results of redundancy analysis revealed that soil moisture,total nitrogen,available phosphorus,and soluble organic nitrogen contents significantly influenced soil microbial biomass and soil hydrolytic enzyme activities,while oxidative enzyme activities were pri-marily regulated by soil moisture and available potassium.In conclusion,soil nutrient contents were the primary drivers of the variations in enzyme activities across different stand stages.When evaluating the impacts of nutrients on soil microbial properties and enzyme activities during the stand development of C.lanceolata plantations,the im-portant role of available potassium on oxidative enzyme activities cannot be ignored.关键词
林分发育/土层深度/土壤微生物/土壤胞外酶/环境因子Key words
stand development/soil depth/soil microorganisms/soil extracellular enzyme/environmental factor引用本文复制引用
卢安琪,陈志杰,李雪,王振宇,李帅军,冯莉绚,王思荣,邹秉章,黄志群..不同林龄杉木人工林土壤微生物生物量与酶活性特征的影响机制[J].生态学杂志,2025,44(1):11-20,10.基金项目
国家自然科学基金项目(31570604,31600495)资助. （31570604,31600495）
