Water samples collected from the Jiaozhou Bay every two months between April 2016 and February 2017 were analyzed for dissolved organic carbon (DOC), particulate organic carbon (POC), total dissolved carbohydrates (TCHO), total hydrolyzed amino acids (THAA), and chromophoric dissolved organic matter (CDOM) to explore the biogeochemical processes of dissolved organic matter (DOM) in anthropogenic estuarine and coastal environments. In addition, nutrients, chlorophyll a and COD (chemical oxygen demand) in these samples were also analyzed. All parameters exhibited temporal and spatial variations: POC 0.13–22.40 mg/L (average 1.75 mg/L), DOC 0.98–32.75 mg/L (average 5.04 mg/L), COD 0.23–7.58 mg/L (average 1.67 mg/L), TCHO 0.34–14.09 µM (average 3.18 µM), THAA 0.89–8.30 µM (average 4.04 µM), and the absorption coefficient a(355) of CDOM 0.23–16.35 m ^− 1 (average 3.09 m⁻¹). The temporal and spatial variations in the concentrations of TCHO, THAA, and DOC implied that the DOM in the study areas had a relatively higher biochemical activity. The canonical correspondence analysis (CCA) and maximal information coefficient (MIC) revealed that seasonal variations in temperature and the phosphate concentration were the dominant factors regulating the DOM distributions in Jiaozhou Bay, while riverine inputs and in situ reproduction mainly controlled the DOM compositions.

从2016年4月至2017年2月每两个月从胶州湾采集的水样进行分析，以分析其中的溶解有机碳（DOC），颗粒有机碳（POC），总溶解碳水化合物（TCHO），总水解氨基酸（THAA）和发色性溶解有机物（CDOM），以探讨人为河口和沿海环境中溶解有机物（DOM）的生物地球化学过程。另外，营养素，叶绿素a还分析了这些样品中的COD（化学需氧量）。所有参数均表现出时间和空间变化：POC 0.13–22.40 mg / L（平均1.75 mg / L），DOC 0.98–32.75 mg / L（平均5.04 mg / L），COD 0.23–7.58 mg / L（平均1.67 mg / L） L），TCHO 0.34-14.09μM（平均值3.18μM），THAA 0.89-8.30μM（平均值4.04μM），和吸收系数一个CDOM的（355）0.23-16.35米 ^{-  1}（平均3.09米^-1）。TCHO，THAA和DOC浓度的时空变化表明，研究区域中的DOM具有相对较高的生化活性。典范对应分析（CCA）和最大信息系数（MIC）表明，温度和磷酸盐浓度的季节性变化是调节胶州湾DOM分布的主要因素，而河流输入和原位繁殖主要控制DOM组成。