中文摘要：

华东海是有宽大陆人架的一个生产的边缘的海并且在吸收大气的二氧化碳并且把源自陆地的有机物转移到开的海洋起一个重要作用。为了在 biogeochemical 调查不是自养的细菌的角色，在华东海，细菌的 biomasses (BB ) 和生产(BP ) 的动力学在四巡航被测量。BB 和 BP 的空间分布是高度季节依赖者。由 Changjiang 河分泌物， BB 和 BP 影响了在架水(比 50 m 不深的底部深度) 里高并且通常减少了在 2009 年 8 月近海。在到到 2010 年 12 月的 2010 年 1 月，和 11 月的 2009 年 12 月， BB 和 BP 在有中等底部深度的水里高。BB 和 BP 的向陆近海的减少趋势也在 MayJune 2011 存在，当 BB 比在架裂缝水(比 50 m 深然而并非比 200 m 深的底部深度) 里的另外的巡航显著地高时。概括添加剂模型(鲸鱼群) 的结果建议 BB 在 820 的一个范围与温度增加了 ? 搠 ? 桷汩 ? 桴 ? 灳 ' 虜?楤敶獲瑩 ? 湡 ? 癥湥敮獳爠灥敲敳瑮摥愠栠杩敨 ? 慶楲'L 汩瑩 ? 楷桴猠杩楮楦慣瑮祬搠晩敦敲瑮瘠污敵 ? 倨 ??? 愠 ?? 敤瑰 ? 景ㄠ洠琠慨 ? 瑡愠搠敥数 ? 慬敹吗？

英文摘要：

The East China Sea is a productive marginal sea with a wide continental shelf and plays an important role in absorbing atmospheric carbon dioxide and transferring terrigenous organic matter to the open ocean. To investigate the roles of heterotrophic bacteria in the biogeochemical dynamics in the East China Sea, bacterial biomasses （BB） and productions （BP） were measured in four cruises. The spatial distributions of the BB and the BP were highly season-dependent. Affected by the Changjiang River discharge, the BB and the BP were high in shelf waters （bottom depth not deeper than 50 m） and generally decreased offshore in August 2009. In December 2009 to lanuary 2010, and November to December 2010, the BB and the BP were high in waters with medium bottom depth. The onshore-offshore decreasing trends of the BB and the BP also existed in May-June 2011, when the BB was significantly higher than in other cruises in shelf break waters （bottom depth deeper than 50 m but not deeper than 200 m）. The results of generalized additive models （GAM） suggest that the BB increased with the temperature at a range of 8-20~C, increased with the chlorophyll concentration at a range of 0.02-3.00 mg/m3 and then declining, and decreased with the salinity from 28 to 35. The relationship between the temperature and the log-transformed bacterial specific growth rate （SGR） was linear. The estimated temperature coefficient （Q10） of the SGR was similar with that of the phytoplankton growth. The SGR also increased with the chlorophyll concentration. The ratio of the bacterial to phytoplankton production ranged from less than 0.01 to 0.40, being significantly higher in November December 2010 than in May-June 2011. Calculated from the bacterial production and growth efficiency, the bacterial respiration consumed, on average, 59%, 72% and 23% of the primary production in August 2009, November-December 2010, and May-/une 2011, respectively.