Status of Soil Microbial Biomass in Reclaimed Mine Degraded Land and Non-Mining Areas- A Review

摘要

Soil microbial biomass is the living and active part of soil organic matter, which is re established after disturbance of the land. Study of recovery time of microbial biomass is important for the development of self-sustaining ecosystem in mine degraded land. In crease in soil microbial biomass and organic carbon contents increases the functional diversity and stability of ecosystem. Several methods have been proposed for the estima tion of microbial biomass carbon, however, chloroform fumigation and extraction with 0.5 M potassium sulphate is still most popular. Several researchers emphasized that ratio of microbial biomass carbon/ soil organic carbon should be used as indicator of reclamation successes and higher the ratio, better is the quality of restored ecosystem. Microbial biomass varies with depth, season, altitude, type of tree species, vegetation cover, soil quality and management practices.