Inhibition effect of zinc in wastewater on the N2O emission from coastal loam soils

被引：4

作者：

Huang, Yan ^{[1
,2
]}

Ou, Danyun ^{[2
]}

Chen, Shunyang ^{[2
]}

Chen, Bin ^{[2
]}

Liu, Wenhua ^{[1
]}

Bai, Renao ^{[2
]}

Chen, Guangcheng ^{[2
]}

机构：

[1] Shantou Univ, Marine Biol Inst, Shantou, Guangdong, Peoples R China

[2] State Ocean Adm, Inst Oceanog 3, Xiamen, Fujian, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 2017年 / 116卷 / 1-2期

关键词：

Zinc; Nitrous oxide; Coastal soil; Nitrification-denitrification; Nitrogen; SHRIMP POND EFFLUENT; NITROUS-OXIDE FLUX; MANGROVE SEDIMENTS; METAL CONTAMINATION; HEAVY-METALS; DENITRIFICATION; NITRIFICATION; POLLUTION; ESTUARY; WETLAND;

D O I：

10.1016/j.marpolbul.2017.01.030

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of zinc (Zn) on nitrous oxide (N2O) fluxes from coastal loam soil and the abundances of soil nitrifier and denitrifier were studied in a tidal microcosm receiving livestock wastewater with different Zn levels. Soil N2O emission significantly increased due to discharge of wastewater rich in ammonia (NH4+-N) while the continuous measurements of gas flux showed a durative reduction in N2O flux by high Zn input (40 mg L-1) during the low tide period. Soil inorganic nitrogen concentrations increased at the end of the experiment and even more soil NF4+-N was measured in the high-Zn-level treatment, indicating an inhibition of ammonia oxidation by Zn input. Quantitative PCR of soil amoA, narG and nirK genes encoding ammonia monooxygenase, nitrate reductase and nitrite reductase, respectively, showed that the microbial abundances involved in these metabolisms were neither affected by wastewater discharge nor Zn contamination. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：434 / 439

页数：6

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