中文摘要：

以富营养化类型不同的乌梁素海和岱海为对象,根据水域面积及生态类型进行采样及分析测试,开展了湖泊沉积物中微生物量与有机碳形态的相关性研究,对比分析了2个湖泊沉积物微生物量的分布特征及其差异性,初步探讨了2个湖泊沉积物微生物量与含水率、pH及有机碳各形态间的相关性。结果表明,乌梁素海表层沉积物中微生物量介于5.59×10^8～32.46×10^8个·g^-1dw,平均16.36×10^8个·g^-1dw;岱海表层沉积物微生物量介于4.76×10^8～43.66×10^8个·g^-1dw,平均25.04×10^8个·g^-1dw;乌梁素海微生物量的高值区位于湖区东南部,岱海微生物量的高值区位于湖心区;2个湖泊沉积物柱芯中的微生物量均随深度增加而减少,沉积物微生物量与含水率、总氮和活性有机碳呈显著相关性。

英文摘要：

In this work,the horizontal and vertical characteristics and the differences of microbial biomass,the correlations between microbial biomass and physical chemistry characteristics such as organic carbon forms,water content,pH,and total nitrogen in sediments from the Wuliangsuhai and Daihai Lake were discussed. The results indicated that the microbial biomass in the surface sediments from the Wuliangsuhai Lake ranges from 5.59×10^8 to 32.46×10^8 cell·g^-1dw,with average of 16.36×10^8 cell·g^-1dw,and it ranges from 4.76×10^8 to 43.66×10^8 cell·g^-1dw,with average of 25.04×10^8 cell·g^-1dw in the Daihai Lake. In terms of the horizontal characteristics,the southeast area was the high value area of microbial biomass in the Wuliangsuhai Lake,and the center area was the high value area in the Daihai Lake. The microbial biomasses decreased with the depth in the sediment cores from the two lakes. There significant linear correlations between the microbial biomass and water content,total nitrogen,active organic carbon were found in this work.