| 太湖湖积物及黄海潮间海积物中氮的反硝化及硝态氮还原成铵的研究 |
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| 作者姓名： | YIN Shi-Xue CHENG Li-Ming SHEN Qi-Rong |
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| 作者单位： | [1]AgronomyDepartment,AgriculturalCollege,YangzhouUnivesity,Yangzhou225009,China [2]CollegeofResourcesandEn,AgriculturalCollege,YangzhouUnivesity,Yangzhou225009,China |
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| 基金项目： | *1Project (No.49671049) supported by the National Natural Science Foundation of China. |
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| 摘 要： | Denitrification and nitrate reduction to ammonium in Taihu Lake and Yellow Sea inter-tidal marine sediments were studied.The sediment samples were made slurry containing 150g dry matter per liter.Various of glucose-C to nitrate-N.Acetylene inhibition technique was applied to measure denitrification in the slurres,All samples were incubated anaerobically under argon atmosphere,Data showed that Taihu Lake sediment produced more N2O than marine sediment,Denitrification potential was higher in Taihu Lake sediment than in marine one,Glucose added increase denitrification activity but not the denitrification potential of the sediments.Dissimilatory nitrate reduction to ammonium seemed to occur in marine sediment,but not in freshwater one.When the marine sediment was treated with 25mmol L^-1 glucose,its denitrification potentail,as indicated by maximum N2O production by acetylene blockage,was lower than that treated with no or 2.5mmol L^-1 glucose.Acetylene was suspected to have inhibitory effect on dissimilatory nitrate reduction to ammonium.
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| 关 键 词： | 太湖 黄海 潮间带 海洋沉积物 反硝化 硝酸盐还原 铵 温室气体 |
Denitrification and nitrate reduction to ammonium in Taihu Lake and Yellow Sea inter-tidal marine sediments |
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| YIN Shi-Xue,CHENG Li-Ming,SHEN Qi-Rong.Denitrification and nitrate reduction to ammonium in Taihu Lake and Yellow Sea inter-tidal marine sediments[J].Pedosphere,1999,9(4):305-309. |
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| Authors: | YIN Shi-Xue CHENG Li-Ming and SHEN Qi-Rong |
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| Institution: | [1]AgronomyDepartment,AgriculturalCollege,YangzhouUnivesity,Yangzhou225009,China [2]CollegeofResourcesandEn,AgriculturalCollege,YangzhouUnivesity,Yangzhou225009,China |
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| Abstract: | Denitrification and nitrate reduction to ammonium in Taihu Lake and Yellow Sea inter-tidal marine sediments were studied.The sediment samples were made slurry containing 150g dry matter per liter.Various of glucose-C to nitrate-N.Acetylene inhibition technique was applied to measure denitrification in the slurres,All samples were incubated anaerobically under argon atmosphere,Data showed that Taihu Lake sediment produced more N2O than marine sediment,Denitrification potential was higher in Taihu Lake sediment than in marine one,Glucose added increase denitrification activity but not the denitrification potential of the sediments.Dissimilatory nitrate reduction to ammonium seemed to occur in marine sediment,but not in freshwater one.When the marine sediment was treated with 25mmol L^-1 glucose,its denitrification potentail,as indicated by maximum N2O production by acetylene blockage,was lower than that treated with no or 2.5mmol L^-1 glucose.Acetylene was suspected to have inhibitory effect on dissimilatory nitrate reduction to ammonium. |
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| Keywords: | denitrification dissimilatory nitrate reduction to ammonium marine sediment Taihu Lake sediment |
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