Areal data from summer 2004 and winter 2006 cruises.

All parameters for the summer cruise have been integrated over the entire euphotic layer (1% incident PAR at surface; it was similar to the mixed layer depth or deeper). The winter PP has been integrated over the euphotic layer while other parameters have been integrated over the mixed layer depth (epipelagic) and from there down to 750 m (mesopelagic layer). Averages and standard deviation in parenthesis.
PP = primary production; BCP = bacterial carbon production; Summer excess DOC = summer dissolved organic carbon values minus average winter constant value (36.5±2.8 µM C s.d.); BCD = bacterial carbon demand (BCP/bacterial growth efficiency); N.D. = not determined.
*BCD calculated using a bacterial growth efficiency derived by the curve in ref. [20] (∼36% in summer and 39% in winter).
**BCD calculated using bacterial growth efficiency of 13% in summer and 6.2% in winter (averaging all data for summer and only HNLC for winter from [12]).
§no s.d. reported because the value is derived from a single depth profile.
°DOC data for winter are not reported, since they are considered as constant refractory DOC values, and have been used to determine summer excess DOC.

夏季科考航次的所有参数均已对全真光层（euphotic layer）完成垂直积分，对应表层1%入射光合有效辐射（PAR）的深度，该深度与混合层深度相当或更深。冬季初级生产（primary production, PP）已对真光层完成垂直积分，其余参数则对混合层深度对应的大洋上层（epipelagic）完成垂直积分，并向下延伸至750米的中层带（mesopelagic layer）继续积分。括号内标注平均值与标准差（standard deviation, s.d.）。

术语说明如下：PP = 初级生产（primary production）；BCP = 细菌碳生产（bacterial carbon production）；夏季过量溶解有机碳（dissolved organic carbon, DOC）指夏季溶解有机碳数值减去冬季平均恒定值（36.5±2.8 µM C，标准差为2.8）；BCD = 细菌碳需求（bacterial carbon demand），计算公式为BCP除以细菌生长效率；N.D. = 未测定（not determined）。

* 细菌碳需求（BCD）的计算采用参考文献[20]中曲线推导得到的细菌生长效率，夏季约36%，冬季约39%。
** 细菌碳需求（BCD）的计算采用夏季13%、冬季6.2%的细菌生长效率，数据取自参考文献[12]，其中冬季数据仅涵盖高营养盐低叶绿素（High Nutrient Low Chlorophyll, HNLC）区域，夏季数据为全部站位的平均值。
§ 未报告标准差，因该数值仅来自单条深度剖面。
° 未报告冬季溶解有机碳（DOC）数据，因冬季溶解有机碳被视为恒定的惰性溶解有机碳，且该数值已用于计算夏季过量溶解有机碳。