铁铝氧化物纳米粒子对土壤有机碳矿化作用的影响

The effect of nanoscale Fe_2O_3 and Al_2O_3 on organic C mineralization in mineral soils

目的:了解纳米Fe2O3和纳米Al2O3颗粒对土壤有机碳分解矿化作用的影响.方法:以若尔盖高寒草甸土为研究对象,采用室内培养实验方法,测定不同纳米材料对土壤呼吸强度的影响.结果:在一个培养试验周期内,添加Al2O3纳米颗粒后土壤呼吸作用增强,添加Fe2O3纳米粒子的土壤呼吸作用变化不明显;随纳米材料加入量增加,土壤呼吸强度的变化无显著差异;结论:Al2O3纳米粒子能够一定程度增强土壤有机碳分解矿化作用,Fe2O3纳米粒子对土壤有机碳分解矿化作用的影响不大.

Objective： The effects of nanoscale Fe2O3 and nanoscale A12O3 on organic C mineralization in mineral soils were investigated. Methods： With incubation test, the soil was treated by different dosages ofnanoscale Fe2O3 and Al2O3, and then the soil respiration rate was analyzed. Results： The respiration rate in soil treated with the nanoscale Al2O3 was significantly higher than that without treatment in a culture cycle, but respiration rate in soil treated with the nanoscale Al2O3 did not change significantly. Conclusion： Nanoscale Al2O3 could enhance organic C mineralization in mineral soils.