土壤2011，Vol.43Issue(1)：67-71,5.
镁碱化盐土微生物生物量和土壤基础呼吸
Microbial Biomass and Basal Soil Respiration in Alkalized Magnesic Soils
摘要
Abstract
The effects of EC (electrical conductivity of soil saturation paste) and Mg2+ alkalinity on soil microbial biomass and basal soil respiration in alkalized magnesic soils were investigated. The study was conducted along the border area of the alluvial fan of Chang Ma of Shu Le He River. Ten sites were chosen and thirty soil samples were taken. The results showed that microbial biomass C(N) and basal soil respiration negatively correlated with EC, exchangeable Mg2+ percentage and Mg2+/Ca2+, while the metabolic quotient (qCO2) positively correlated with EC,exchangeable Mg2+ percentage and Mg2+/Ca2+, which indicated the adverse effect that salinity and Mg2+ alkalinity stressec on soil microbial community.关键词
电导率/镁碱度/Mg2+/Ca2+/微生物生物量/土壤基础呼吸/微生物代谢熵Key words
EC, Mg2+ alkalinity/ Mg2+/Ca2+/ Microbial biomass/ Basal soil respiration/ Metabolic quotient分类
农业科技引用本文复制引用
元炳成,刘权,黄伟,李凤成..镁碱化盐土微生物生物量和土壤基础呼吸[J].土壤,2011,43(1):67-71,5.基金项目
国家自然科学基金项目(30700104)资助. （30700104）
