摘要
以小兴安岭红松林土壤微生物为研究对象,采用生态群落学调查方法、氯仿熏蒸浸提法及土壤理化性质常规测定方法对原始红松林草本植被及其土壤微生物量动态进行了研究。结果表明,各林型内共有的草本植被优势种为尖齿蹄盖蕨(Athyrium spinulosum)和赖草(Leymus secalinus)。不同林型土壤微生物量碳、氮均随土层的加深呈现出递减的趋势;随季节的变化表现为:春季到秋季一直减少,冬季有所增加;并且3种原始红松林土壤微生物量要高于落叶松人工林。在微生物量动态与土壤的关系中,微生物量与土壤pH值、有机质、水解氮、速效钾均呈现出显著的正相关关系,与含水量、土温、有效磷也呈正相关,但相关不显著。
We analyzed and recorded the herbaceous vegetation of Primary Korean Pine Forest and soil microbial biomass dynamics using ecological community survey methods, chloroform fumigation-extraction, and other methods to study soil physical and chemical properties. The results showed that the dominant herb species in all studied forest types were Athyrium spinulosum and Leymus secalinus. Microbial biomass, carbon, and nitrogen levels decreased with the soil layer deepen. Microbial biomass declined from spring to autumn and increased slightly in winter. Microbial biomass in Primary Korean Pine Forest was higher than that in uniform plantation forests. A significant positive relationship was observed between the dynamics of microbial biomass and soil, soil pH, organic matter content, hydrolyzed nitrogen and available potassium. However, microbial biomass was not significantly correlated with soil water content, soil temperature and available phosphorus.
出处
《草业科学》
CAS
CSCD
北大核心
2014年第1期15-21,共7页
Pratacultural Science
基金
863计划"林木花卉转基因育种"(2013AA102701)
关键词
草本植被
土壤微生物
微生物量碳
微生物量氮
土壤理化性质
herbaceous vegetation
soil microbial biomass
soil microbial biomass carbon
soil microbialbiomass nitrogen
soil physical and chemical properties
