基于2015年8月采集的24个淮河流域以周村水源水库为代表的表层水样的有色溶解性有机物（CDOM）吸收系数数据，研究了 CDOM 吸收光谱的空间分布特征，考察了 CDOM 的吸收系数与水质参数的相关关系，同时探讨了周村水库夏季 CDOM 的潜在来源.结果显示：依据 CDOM 的吸收光谱空间分布特性及采样点分布特征，周村水库分为入库口、过渡区和主库区3个特征水域；CDOM 的吸收系数沿入库口到主库区依次递减，S 值呈现相反的趋势；分析发现 S240~500与 a （355）和 a∗（355）呈极显著负相关（R2=0.98、0.88）；CDOM 吸收系数 a（355）与溶解性有机碳（DOC）浓度具有良好的线性相关，有利于建立 DOC 遥感反演模型；同时，CDOM 吸收系数 a（355）与 aph（440）存在极显著正线性相关，表明浮游植物的新陈代谢及其降解产物是夏季周村水库 CDOM 的潜在来源.综上，通过对夏季周村水库水体 CDOM 的研究，丰富了关于水源水体 CDOM 的调查资料，可为日后水库的管理提供技术支撑.%Based on the data of the absorption coefficient of colored dissolved organic matter (CDOM) from 24 surface water sam-ples collected from Zhoucun Reservoir in Huaihe Catchment, we analyzed the spatial distribution characteristics of CDOM absorp-tion coefficient, investigated the correlation between CDOM absorption coefficient and environmental parameters, and explored the possible source of CDOM in the reservoir. The samples collected from the reservoir were categorized into three different groups (storage port, transition region and main reservoir area), the absorption coefficients ( a(355) and a∗(355)) had a decrease process from the storage port to main reservoir area, while the S value exhibited an increased trend. Meanwhile, significantly nega-tive correlations of the value of S240-500 were found with a(355) and a∗(355), respectively, which may have implications for the remote sensing estimation of CDOM in this study. A significantly negative correlation between a(355) and dissolved organic carbon (DOC) concentration was conducive to the establishment of DOC remote sensing inversion model, and relationships between a (355) and aph(440) implied the potential contribution of phytoplankton metabolism and degradation products to the CDOM pool in the Zhoucun Reservoir. These results on the CDOM analysis made a significant contribution to the management of the Reservoir in the future.
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