| 摘要: |
| 于1983年11月—1985年11月在胶州湾的两个观测站逐月进行了2周年的海水中叶绿素浓度的定点研究。结果表明，（1）胶州湾口表层海水中的叶绿素a平均浓度为3.05（1.02－15.62）mg/m3；真光层中平均为26.34（9.97－106.59）mg/m2；其季节变化呈春（3—4月）、秋（9—11月）双峰型。（2）小型（＜78 μm）的浮游植物平均占海水中叶绿素a的85.76％。（3）叶绿素a／c比在表层海水中平均为2.41，真光层中平均为2.60；叶绿素a／b比和叶绿素a与类胡萝卜素的比值均大于10。（4）春季，叶绿素的最大层出现在0－3m层；夏、秋季，逐渐下移；冬季，上、下层叶绿素a浓度比较均匀。认为胶州湾的浮游植物生物量和初级生产力都很高，可以发展海水养殖业。 |
| 关键词: 叶绿素 色素 生物量 浮游植物 胶州湾 |
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| VERTICAL AND SEASONAL VARIATIONS OF CHLOROPHYLL CONCENTRATIONS IN THE INLET OF JIAOZHOU BAY, QINGDAO |
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Pan Youlian, Guo Yujie, Zeng Chengkui (C. K. Tseng)
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Institute of Oceanology, Academia Sinica, Qingdao 266071
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| Abstract: |
| The monthly concentrations of chlorophyll a at two stations in the inlet of Jiaozhou Bay, Qingdao, China (Station 1:120° 14.60' E, 36°04.00' N; Station 2: 120° 16.54' E, 36°04.46' N) during the period of November, 1983 to November, 1985 ranged from 1.02 to 15.62 mg/m3 with an annual average of 3.05 mg/m3 in the surface water. The integrated chlorophyll a value in the water column of euphotic zone ranged from 9.97 mg/m2 to 106.59 mg/m2 and was 26.34 mg/m2 on the average. Seasonally, there was a major peak (44.22—65.15 mg/m2) in the spring and a minor one (34.02—55.50 mg/m2) in fall consistent with the pattern of phytoplankton concentration in most Chinese coastal waters reported by others. Depth of the chlorophyll a maximum layer varied with season, i. e. in the top 3m during the spring and summer and at greater depth in the winter. The phytoplankton < 78 μm comprising essentially of diatoms and dinoflagellates contributed 85.76% of phytoplankton biomass on the average (58.4%—96.5%). The mean ratio of chlorophyll a : c was 2.41 in the surface water and 2.60 in the euphotic zone. The mean ratio of chlorophyll a : b and chlorophyll a carotenoid were both larger than 10.
The seasonal and vertical distributions of chlorophyll a concentrations were discussed in relation to the physical and chemical oceanographic process. The high phytoplankton biomass, high primary productivity along with sufficient nutrients in the bay would sustain active mariculture. |
| Key words: Chlorophyll, Pigments, Biomass, Phytoplankton, Jiaozhou Bay |
