DISTRIBUTION OF NUTRIENTS IN THE SUMMER OF LAIZHOU BAY AND INFLUENCE FACTORS
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摘要: 根据2012年7—8月对莱州湾199个站点的调查数据,对水体营养盐的分布状况与影响因素进行分析和研究。结果表明:夏季莱州湾表层水体中的营养盐浓度略高于底层。表层营养盐的分布特征基本一致。受河流陆源输入、东部水产养殖、浪潮流叠加效应和海水扩散稀释能力等的影响,高值区主要分布在黄河等河流入海海口附近以及东部的养殖区,浓度沿着西南向东北方向含量逐渐降低。底层与表层水中大多数营养盐分布特征大致相同,但底层营养盐的浓度在河口和养殖区的水平变化梯度减小。Abstract: Based on the 199 samples collected from the Laizhou Bay in July, 2012, the distribution pattern of nutrients and influence factors are studied in this paper. The results show that the concentration of most nutrients is slightly higher in the surface water than that in the bottom water. The high-value area of nutrients is distributed near the estuary of the Yellow River and the eastern aquacultural areas, depending upon the effect of river and aquaculture input, superimposed wave-tide effect, and water diffusion and dilution. In general, the concentrations of nutrient gradually decrease from southwest to northeast. The distribution pattern of nutrients in bottom water is similar to that in surface water. However, the nutrients input from the river are reduced and the wave-tide effect is weakened due to the influence of water depth, and thus the horizontal gradient of the nutrients in bottom water is decreased in the estuary and aquacultural regions.
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Key words:
- Laizhou Bay /
- nutrients /
- factor /
- terrigenous input
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