土壤微生物生物量作为土壤质量生物指标的研究

Discussion on Siol Microbial Biomass as A Bio-indicator of Soil Quality for Latosol Earth

分析了浅海沉积物砖红壤上的次生阔叶林、桉树施肥林、厚荚相思林、不施肥连栽桉林地内的土壤微生物生物量 .结果表明 :微生物生物量较土壤有机质、全氮能更灵敏地反映不同林分类型和不同种植年限对土壤的修复作用 .因此 ,初步认为土壤微生物生物量可以作为砖红壤土壤质量的生物指标 .

Microbial biomass of latosol earth developed from neritic deposit was measured and analyzed for respectively secondary broad leave forest, acacia crassicarpa forest, and fertilized and unfertilized eucalyptus forests. Results showed that the soil microbial biomass was more sensitive than soil organic matter and total nitrogen content in reflecting the bio remediation effect of different forest types at different growing stage on the degraded latosol earth ecosystem. It is thus suggested that the soil microbial biomass be used as a soil quality bio indicator for the soil types investigated.