CAJ | 학술논문

沉积物耗氧速率（sedimentoxygendemand，简称SOD）在综合评价水体水质和环境特征时是一个非常有用的参数，对分析水体氧收支平衡和评价水环境质量具有重要意义。采集了由太湖大浦沿岸到湖心及太湖南岸到湖心不同位点的太湖沉积物，采用微体积法研究了太湖沉积物SOD的空间异质性。结果表明：随着离湖岸距离的增加，沉积物SOD逐渐降低；沉积物SOD与沉积物粒度分布和间隙水APA呈极显著正相关（R2=0．867，P〈0．01；R2=0．929，P〈0．01），与沉积物APA呈负相关，但不显著（R2=-0．331，P〉0．05），与有机物含量呈极显著负相关（R2=-0．794，P〈O．01）。
침적물모양속솔（sedimentoxygendemand，간칭SOD）재종합평개수체수질화배경특정시시일개비상유용적삼수，대분석수체양수지평형화평개수배경질량구유중요의의。채집료유태호대포연안도호심급태호남안도호심불동위점적태호침적물，채용미체적법연구료태호침적물SOD적공간이질성。결과표명：수착리호안거리적증가，침적물SOD축점강저；침적물SOD여침적물립도분포화간극수APA정겁현저정상관（R2=0．867，P〈0．01；R2=0．929，P〈0．01），여침적물APA정부상관，단불현저（R2=-0．331，P〉0．05），여유궤물함량정겁현저부상관（R2=-0．794，P〈O．01）。
Sediment Oxygen Demand （SOD） is a very useful parameter when used in appraising water quality and environmental characteristics comprehensively, and it has an important significance in analyzing water oxygen balance and assessing water environment quality. In this study the sediments are collected in different sites along Dapu coast to the center of Taihu Lake and along the south bank to the center of Taihu Lake. Based on the small volume method, the spatial heterogeneity of SOD in sediments of Taihu Lake is explored. The results show that the SOD reduces gradually with the increase of distance from the shore of the lake. SOD is posi- tively correlated to particle size distribution and interstitial water APA of sediments （P 0. 01）, and there is a negative correlation between SOD and APA of sediments（P〉0. 05）, but not significantly. There is a significantly negative correlation between SOD and the content of organic compound（P（0. 01）.