Effect of inoculation with AM fungi on microorganism and enzyme activity in PAEs-polluted soil

Abstract

Abstract: In greenhouse, a pot experiment was carried out to study effects of application with 50 mg穔g^-1 DEHP and 50 mg穔g^-1 DBPand inoculation with Acaulospora lavis(strain No. 34) on microorganism numbers and enzymes activity in the mycorrhizosphere(A), hyphosphere(B) and bulk soil(C) of sterilized soil, respectively. The results indicated that compared with no DEHP and DBP (CK), microorganism numbers and enzymes concentration in the A, B and C soil layer respectively decreased after application with DEHP and DBP. After inoculation with AM fungi, the numbers of bacteria, fungi and actinomycetes in the A and B soil layer were lower than those in the uninoculated treatment. But they were higher in Csoil layer than those in the uninoculated treatment. Compared with uninoculated treatment, neutral phosphatase and urease concentration decreased in the Aand Bsoil layer inoculated with AM fungi, but dehydrogenase concentration slightly increased in the Bsoil layer and decreased in the Aand Csoil layer. AM slightly affected dehydrogenase activity. It suggested that DEHP and DBP could destroy microorganism and enzyme in soil, and inoculation with AM fungi did not decrease those harmful effects.

Key words: Semi-aerobic, Municipal solid waste, Landfill gas, Methane

CLC Number:

WANG Shuguang, LIN Xiangui, YIN Rui, HOU Yanlin . Effect of inoculation with AM fungi on microorganism and enzyme activity in PAEs-polluted soil[J]. cje, 2004, (1): 48-51.

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