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-Investigations of Chi, a and primary production were carried out in the coastal upwelling area (27°’-30°30’N, west to 124°00’E) off Zhejiang in August and October 1981. The high-value areas of Chl. a were in nearshore waters and on top of the upwelling front, where Chl. a occurred the maximum 7.40 mg/m3. With the average of 1.25 g C/m2.d, the primary production was more than 2.0gC/m2·d incenteral area of the upwelling, and the whole surveyed area’s output was about 4.4 ×104 tons C/d.
-Investigations of Chi, a and primary production were carried out in the coastal upwelling area (27 ° ’-30 ° 30’N, west to 124 ° 00’E) off Zhejiang in August and October 1981. The high-value areas of Chl. A were in nearshore waters and on top of the upwelling front, where Chl. A occurred the maximum 7.40 mg / m3 · With the average of 1.25 g C / m2.d, the primary production was more than 2.0 gC / m2 · d incenteral area of the upwelling, and the whole surveyed area’s output was about 4.4 × 104 tons C / d.