&nbsp;Effect of elevated atmospheric CO<sub>2</sub>concentration on the soil enzymes and microbial communities under stress of Cd pollution <br>

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Journal of Nanjing University(Natural Sciences) ›› 2011, Vol. 47 ›› Issue (6) : 713-717.

Effect of elevated atmospheric CO₂concentration on the soil enzymes and microbial communities under stress of Cd pollution

Tian Ran¹,Zhou Hui¹,Huang Juan²,Zhu Jian-Guo²,Yin Ying¹,Sun Yuan-Yuan¹,Wang Xiao-Rong¹,Guo Hong-Yan^1,2

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Abstract

Using a free air concentration enrichment (FACE) sytem,we studied the effects of Cd pollution stress on soil enzymes and microbial communities in a rice-wheat rotation system under the different concentrations of atmspheric CO2 in China. The results showed that:in clean soil, elevated CO2 concentration induced mainly an Cd polluted soil (0.5 mg/kg),protease activity and urease activities at elevated O3 concentration had significantly decreased than the control.Compared with the ambience condition,the diversity of soil microbial communities was decreased in Cd polluted soil when elevated CO2 concentration.The above results preliminarily indicated that:while atmospheric CO2 concentration were elevated,the stress of Cd pollution on soil enzymes,microbial systems will be exacetbated.however,the mechanism and the ultimate stress level need to be further studied.

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Tian Ran¹,Zhou Hui¹,Huang Juan²,Zhu Jian-Guo²,Yin Ying¹,Sun Yuan-Yuan¹,Wang Xiao-Rong¹,Guo Hong-Yan^1,2. Effect of elevated atmospheric CO₂concentration on the soil enzymes and microbial communities under stress of Cd pollution
[J]. Journal of Nanjing University(Natural Sciences), 2011, 47(6): 713-717

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