| Enzymatic and Microbial Degradation of Organic Matter in Lake Hongfeng, Guizhou Province, China |
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| 作者姓名： | 梁小兵 朱建明 刘丛强 魏中青 汪福顺 万国江 黄荣贵 |
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| 作者单位： | State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China，State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China，State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China，State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China，State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China，State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China，State Key Laboratory of Environmental Geochemistry，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002，China |
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| 基金项目： | 国家自然科学基金，Technological Foundation of Guizhou Province，中国科学院资助项目 |
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| 摘 要： | 1IntroductionEnzymaticandmicrobialdegradationoforganicmatterhasabearingnotonlyonearlydiagene sis,butalsoonelementcyclingandmicrobedistributioninlakesediments.Somereportsshowedtheabundancevariationsoforganicmatterinsediments (BurdigeandGardner,1998;ArthurandDean ,1998;WanGuojiangetal.,2 0 0 0 ) .However,duetothecomplexchemicalcompositionoforganicmatter,mechanismsofenzymaticandmicrobialdegradationandvariationsofeachchemicalcomponentneedtobestudiedfurther.Underanoxiccondition ,SO2 -4 isanimpo…
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| 关 键 词： | 生化酶 降解 有机物 贵州 |
Enzymatic and microbial degradation of organic matter in Lake Hongfeng,Guizhou Province,China |
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| Liang?Xiaobing,Zhu?Jianming,Liu?Congqiang,Wei?Zhongqing,Wang?Fushun,Wan?Guojiang,Huang?Ronggui.Enzymatic and Microbial Degradation of Organic Matter in Lake Hongfeng, Guizhou Province, China[J].Chinese Journal of Geochemistry,2004,23(1):81-88. |
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| Authors: | Liang Xiaobing Zhu Jianming Liu Congqiang Wei Zhongqing Wang Fushun Wan Guojiang Huang Ronggui |
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| Institution: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China |
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| Abstract: | In this work, enzymatic and microbial degradation of organic matter in Lake Hongfeng, Guizhou Province, is described in terms of variations in DNA, α-glucosidase and sulfatereduction bacteria (SRB). Organic matter is degraded by microbes and extracellular enzymes excreted by the former, to a relatively low content below the 11-cm sediment depth. The distribution of DNA indicated that microbes are very active at the 9-cm sediment depth, where organic matter is degraded by microbes intensively. The contents of α-glucosidase are highest in susganic matter have been degraded intensively, α-glucosidase activity weakens with sediment depth. At the 11-cm depth where the degradation of organic matter started to slow down, α-glulogical research indicated that sulfate reduction bacteria (SRB) are distributed mainly at the upper 7-cm sediments in Lake Hongfeng. Combined with the results of research on the variations of organic matter and SO2-4, it is indicated that SO2-4 is unlikely to become an important electron acceptor and sulfate reduction is not limited by the supply of organic matter in Lake Hongfeng. |
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| Keywords: | sediments organic matter enzyme Lake Hongfeng Guizhou |
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