Effects of Lanthanum on Microbial Biomass Carbon andNitrogen in Red Soil
来源期刊：JOURNAL OF RARE EARTHS2001年第1期
论文作者：朱建国 曾青 李振高 曹志洪 谢祖彬 褚海燕
Abstract: The result of soil culture experiment shows that lanthanum has inhibitory effect on the microbial biomass C and N in red soil, and the inhibition is strengthened with increasing concentration of La. The result of rice pot culture experiment shows that low concentration of La has slight stimulative effect on the microbial biomass C and N in red soil, but its high concentration has inhibitory effect and the inhibition is strengthened with increasing concentration of La. Soil microbial biomass is an important indicator for evaluating rare earths-polluted soil. It is assumed that the critical La concentration is 100 mg*kg-1 at which red soil tends to be polluted.
朱建国1，曾青1，李振高1，曹志洪1，谢祖彬1，褚海燕1
(1.Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Chinese Academy of Sciences,)
Abstract:The result of soil culture experiment shows that lanthanum has inhibitory effect on the microbial biomass C and N in red soil, and the inhibition is strengthened with increasing concentration of La. The result of rice pot culture experiment shows that low concentration of La has slight stimulative effect on the microbial biomass C and N in red soil, but its high concentration has inhibitory effect and the inhibition is strengthened with increasing concentration of La. Soil microbial biomass is an important indicator for evaluating rare earths-polluted soil. It is assumed that the critical La concentration is 100 mg*kg-1 at which red soil tends to be polluted.
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