CAJ | 학술논문

2010年9月对南海北部海域细菌生长效率、细菌呼吸率、细菌生产力及相关生态、环境因子进行了调查研究。结果表明,细菌生产力(C)和细菌呼吸率(C)表层平均值分别为0.08±0.02mg·m-3·h-1和0.92±0.18mg·m-3·h-1,细菌生长效率在6.20%-9.84%范围波动。细菌生产力、细菌生长效率的空间分布呈现由近岸向外海逐渐递减趋势,而细菌呼吸率的分布特征相对不显著。细菌呼吸率和细菌需碳量明显高于初级生产力,表明南海北部海域整体呈异养性特征,初级生产过程不足以满足细菌生长代谢对碳的需求。尽管细菌生产力与细菌呼吸率相关性显著,但与两者相关的环境因子不完全一致,说明它们可能存在不同的调控机制。综合分析细菌生产力、细菌呼吸率和相关生态环境因子,结果表明,南海北部异养细菌二次生产和呼吸代谢2种不同的生态功能在微食物环以及整个生态系统的物质循环和能量流动中均发挥重要作用。
2010년9월대남해북부해역세균생장효솔、세균호흡솔、세균생산력급상관생태、배경인자진행료조사연구。결과표명,세균생산력(C)화세균호흡솔(C)표층평균치분별위0.08±0.02mg·m-3·h-1화0.92±0.18mg·m-3·h-1,세균생장효솔재6.20%-9.84%범위파동。세균생산력、세균생장효솔적공간분포정현유근안향외해축점체감추세,이세균호흡솔적분포특정상대불현저。세균호흡솔화세균수탄량명현고우초급생산력,표명남해북부해역정체정이양성특정,초급생산과정불족이만족세균생장대사대탄적수구。진관세균생산력여세균호흡솔상관성현저,단여량자상관적배경인자불완전일치,설명타문가능존재불동적조공궤제。종합분석세균생산력、세균호흡솔화상관생태배경인자,결과표명,남해북부이양세균이차생산화호흡대사2충불동적생태공능재미식물배이급정개생태계통적물질순배화능량류동중균발휘중요작용。
An in situ study on bacterial growth efficiency, bacterial respiration, bacterial production, and related ecological and environmental factors were carried out in the northern South China Sea in September 2010. The average values of bacterial production (C) and bacterial respiration (C) were 0.08±0.02 mg·m-3·h-1and 0.92±0.18 mg·m-3·h-1, respectively, while the bacterial growth efficiency varied between 6.20%and 9.84%. Both bacterial respiration and bacterial carbon demand were obviously higher than the primary production, indicating that the surface waters of the northern South China Sea were characterized as a heterotrophic system, and the carbon produced by primary productivity could not meet the demand of bacterial metabolism. Although the bacterial production was significantly correlated with the bacterial respiration in the northern South China Sea, the notable correlated environmental factors of these two parameters did not match, which suggests that these two ecological processes may have different regulation mechanisms in the study area. The integrated analysis on bacterial metabolism and related ecological and environmental factors indicated that both bacterial respiration and bacterial production played important roles in the circulation of materials and energy flux in microbial loop and the whole ecosystem of the northern South China Sea.