摘要
地球上一切生命都需要能量，这种能量主要来自太阳能。
The distribution of the concentrition of the chlorophyll-a, its seasonal variations and the estimation of the primary pro-duction,as well as the relation with the fishing ground in the south of the Huanghai Sea and the north of the East China Sea are studied in the present paper.The concentrition of the chlorophyll-a varied from 0.15mg/m3 to 6.32 mg/m3. The integral mean value of the concentrition varied from 0.19mg /m3 to 5.45mg/m3.The monthly mean value is 1.07mg/m3, 0.69mg/m3, 0.44mg/m3 and 1.41mg/m3 respectively in June,September, December and March next year.The primary production is estimatied from the concentrition of the chlorophyll-a. The value thus obtaind varies from 19.80mgC/m2. day to 2237.80mgC/m2. day. The monthly mean value is 596.30mgC/m2. day, 546.30mgC/m2. day, 212.80mgC/m2.day and 619. 70mgC/m2. day respectively in June, September, December and March next year. The yearly mean value of the primary production is 180.20mgC/m2. day.The distribution of the concentrition of the chlorophyll-a and the fishing ground are closely related; high value areas of the concentrition are usually the fishing ground.
