| 重金属污染降低水稻土微生物商并改变PLFA群落结构——苏南某地污染稻田的案例研究 |
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| 引用本文： | 阎姝,潘根兴,李恋卿.重金属污染降低水稻土微生物商并改变PLFA群落结构——苏南某地污染稻田的案例研究[J].生态环境,2008,17(5). |
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| 作者姓名： | 阎姝 潘根兴 李恋卿 |
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| 作者单位： | 南京农业大学农业资源与生态环境研究所,江苏,南京,210095 |
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| 基金项目： | 国家自然科学基金
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| 摘 要： | 重金属污染可能影响土壤中微生物生物量与活性及群落结构.但这种影响随土地利用和土壤类型、污染物类型而异.采集了江苏南部某市金属冶炼产业区周边重金属污染的稻田和未明显污染稻田的表土样品,分析了重金属复合污染下土壤微生物生物量以及PLFA群落结构的变化.结果表明,重金属污染下稻田土壤的微生物生物量碳、氮及微生物商比未明显污染的土壤显著降低(约20%);PLFA分析显示,重金属污染下土壤微生物群落结构发生了明显的变化,细菌和真菌PLFA的变化幅度达到30%以上,革兰氏阳性菌与革兰氏阴性菌的脂肪酸比值升高,而真菌/细菌的比例降低了约70%.这种改变可能进一步影响到土壤中C、N等养分的生物地球化学循环,这有待深入的研究.
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| 关 键 词： | 水稻土 微生物群落结构 重金属 土壤污染 |
Decline of microbial biomass quotient and change in microbial PLFA community structure of a rice paddy soil under heavy metal pollution-A case study of a polluted rice paddy from southern Jiangsu,China |
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| Yan Shu,Pan Genxing,Li Lianqing.Decline of microbial biomass quotient and change in microbial PLFA community structure of a rice paddy soil under heavy metal pollution-A case study of a polluted rice paddy from southern Jiangsu,China[J].Ecology and Environmnet,2008,17(5). |
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| Authors: | Yan Shu Pan Genxing Li Lianqing |
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| Institution: | Yan Shu,Pan Genxing,Li Lianqing Institute of Resource,Ecosystem , Environment of Agriculture,Nanjing Agricultural University,Nanjing 210095,China |
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| Abstract: | Heavy metal pollution may lead to changes in soil microbial biomass,microbial community structure and functioning activity in soil. The topsoil samples both from a unpolluted rice paddy and a polluted paddy soil in adjacent to a metal smelter were collected from a county in the southern Jiangsu,China. Soil microbial biomass carbon was measured by the conventional fumigation procedure and microbial community structure analyzed by PLFA. The results showed that soil microbial biomass carbon,nitrogen and the m... |
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| Keywords: | PLFA |
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