Effects of Soil pH Regulators on Soil Microbial Biomass in Atrazine-contaminated Soil by Dendroremediation of Poplar
Hybrid poplar (Populus deltoidsxnigra, DN34) was taken as plant material to remediate atrazine-contaminated soil by rhizobox with sublimed sulfur and calcium hydroxide as soil pH regulators. Results showed higher concentration of atrazine on soil with toxic effects for soil microbe, while soil microbial biomass carbon and soil microbial biomass nitrogen decreased during the whole time. Planting the poplar could not promote the amount of soil microbial biomass, the application of soil pH regulators changed the rhizo-environment of soil, soil microbial community structure and the number of microbe. The addition of soil pH regulators could promote the microbial activity of contaminated soil and the capability of using nitrogen source. Sublimed sulfur could reduce lower soil microbial biomass carbon, while calcium hydroxide could promote the microbial activity of contaminated soil.
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万方数据
维普
