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本文叙述了1981年8月和10月在浙江近海上升流区(27°30′—30°30′N,124°00′E以西)所进行的叶绿素a含量,浮游植物优势种类、海面辐照度、海水光学参量、浮游植物光合作用速率和同化指数的测定,绘出了该水域夏季上升流盛期叶绿素a和初级生产力的分布图,并结合同步调查的海洋水文要素及化学营养盐资料,详细论述了叶绿素a和初级生产力的分布特征及其与海洋环境理化因子的关系。 调查海区叶绿素a分布的高值区位于近岸和上升流锋层顶部,最大值为7.40mg/m~3,真光带平均潜在初级生产力的分布,仍为近岸和上升流的中心区为高值区,调查海区上升流盛期平均现场初级生产力为1.25mgC/(m~2·d),上升流中心区要超过2.0g C/(m~2·d),整个水域有机碳生产量约为4.4×10~4t/d。
This paper describes the contents of chlorophyll a, dominant species of phytoplankton and sea surface irradiance in the upwelling area offshore Zhejiang (27 ° 30’-30 ° 30’N, west of 124 ° 00’E) in August and October 1981. Degrees, seawater optical parameters, phytoplankton photosynthesis rate and assimilation index, plotting the distribution of chlorophyll a and primary productivity in the summer ascending flow of the waters. Combined with the data of marine hydrological elements and chemical nutrients, The distribution characteristics of chlorophyll a, primary productivity and its relationship with the physical and chemical factors of the marine environment are discussed in detail. The high value area of chlorophyll a distribution in the survey area is located at the top of the nearshore and upwelling flow front with a maximum value of 7.40mg / m ~ 3. The distribution of potential primary productivity in the true light zone is still high in the central area of nearshore and upwelling flow In the survey area, the average on-site initial productivity was 1.25mgC / (m ~ 2 · d) and the up-flow center area was over 2.0g C / (m ~ 2 · d). The total organic carbon production 4.4 × 10 ~ 4t / d.