CAJ | 학술논문

采用黑白瓶方法,在2012年夏季测定了台湾海峡及南海北部16个站位群落总的初级生产力(gross primary production, GPP)和群落呼吸(community respiration, CR),总的初级生产力 GPP 水柱积分平均值为106.6±7.51mmol O2 m-2·d-1(mean±SE,以下同),群落呼吸CR平均为131.1±5.95mmol O2 m-2·d-1,净群落生产力(net community production, NPP)变化范围为-179.0~377.6mmol O2 m-2·d-1(中值为-40.4mmol O2 m-2·d-1)。受上升流的影响,琼东海域呈现明显的自养状态。在珠江口,由于珠江冲淡水的流入,该区域也呈现自养状态。相反,台湾海峡近岸以及粤东近岸均为异养区域。由此可见,异养区域的群落呼吸并不是完全由本地初级生产力决定,有机碳在空间上的输送对海洋浮游生物群落新陈代谢的影响可能极为重要。
채용흑백병방법,재2012년하계측정료태만해협급남해북부16개참위군락총적초급생산력(gross primary production, GPP)화군락호흡(community respiration, CR),총적초급생산력 GPP 수주적분평균치위106.6±7.51mmol O2 m-2·d-1(mean±SE,이하동),군락호흡CR평균위131.1±5.95mmol O2 m-2·d-1,정군락생산력(net community production, NPP)변화범위위-179.0~377.6mmol O2 m-2·d-1(중치위-40.4mmol O2 m-2·d-1)。수상승류적영향,경동해역정현명현적자양상태。재주강구,유우주강충담수적류입,해구역야정현자양상태。상반,태만해협근안이급월동근안균위이양구역。유차가견,이양구역적군락호흡병불시완전유본지초급생산력결정,유궤탄재공간상적수송대해양부유생물군락신진대사적영향가능겁위중요。
We investigated the metabolic states of plankton communities in the Taiwan Strait and the northern South China Sea by measuring gross primary productivity (GPP), community respiration (CR) and bacterial production (BP) at 16 stations in these areas. GPP averaged 106.6 mmol O2 m-2·d-1 with a standard error of 7.51 mmol O2 m-2·d-1. CR averaged 131.1 mmol O2 m-2·d-1 with a standard error of 5.95 mmol O2 m-2·d-1. Net community productivity varied from-179.0 to 377.6 mmol O2 m-2·d-1with a median value of-40.4 mmol O2 m-2·d-1. Our results showed that the area affected by Qiongdong upwelling was autotrophic. In the areas affected by the Pearl River discharge, the plankton community was also autotrophic. By contrast, other areas including the Taiwan Strait nearshore waters and the South China Sea open waters were heterotrophic. Therefore, community respiration was not entirely determined by the local primary productivity in the study areas. Our results suggest that the spatial transport of organic carbon plays an important role in determining the metabolic state of the plankton community.