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大连海洋大学学报  2024, Vol. 39 Issue (1): 134-143    DOI: 10.16535/j.cnki.dlhyxb.2023-133
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辽东湾叶绿素a与营养盐分布特征的数值模拟
赵梓宇,朱晓森,王卓,张明亮*
1.大连海洋大学 海洋科技与环境学院，辽宁 大连 116023；2.辽宁省近海生态环境与灾害防护工程技术创新中心，辽宁 大连 116023
Numerical simulation of concentration distribution characteristics of ecological indicators in Liaodong Bay based on Delft3D model
ZHAO Ziyu，ZHU Xiaosen，WANG Zhuo，ZHANG Mingliang*
1.College of Marine Science and Environment，Dalian Ocean University，Dalian116023，China；2.Technology Innovation Center for Coastal Ecological Environment and Disaster Protection，Dalian116023，China
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摘要 为探究辽东湾海域内叶绿素a与营养盐的时空分布特征及相互作用机理，基于数值模拟(Delft3D)方法构建了叶绿素a(Chl-a)、溶解氧(DO)、氨氮硝酸盐氮和活性磷酸盐等生态指标在辽东湾海域的生态动力学模型(Delft3D-ECO)，并在验证模型的基础上分析了叶绿素a等生态指标浓度在辽东湾海域的时空变化和分布情况。结果表明：在季节变化上，叶绿素a质量浓度表现为秋季(4.83 μg/L)>夏季(4.13 μg/L)>春季(3.39 μg/L)，DO质量浓度表现为春季(9.41 mg/L)>夏季(7.26 mg/L)>秋季质量浓度表现为春季(0.76 mg/L)>秋季(0.56 mg/L)>夏季(0.50 mg/L)，质量浓度表现为春季(0.039 mg/L)>秋季(0.030 mg/L)>夏季(0.026 mg/L)，质量浓度表现为秋季(0.025 mg/L)>夏季(0.020 mg/L)>春季(0.018 mg/L)；在空间分布上，辽东湾海域中的叶绿素 (春、夏) (春、夏)质量浓度分布呈东北高、西南低的特点，质量浓度呈研究区域湾顶与湾口高、中部低的特征。研究表明，辽东湾顶部的辽河、大辽河是影响辽东湾海域生态指标浓度时空分布的重要因素，辽东湾海域的营养盐限制作用表现为磷相对限制。
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赵梓宇
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张明亮
关键词:  辽东湾  Delft3D  生态动力学模型  叶绿素a  营养盐时空分布    
Abstract: In order to explore the temporal and spatial distribution characteristics and interaction mechanism of chlorophyll a and nutrients in the Liaodong Bay, an ecological dynamic model is established including ecological indicators such as chlorophyll a (Chl-a), dissolved oxygen (DO), ammonia nitrogen  based on the numerical simulation method (Delft3D model), in Liaodong Bay based on Delft3D model. The accuracy of the model was verified, and then the spatial-temporal changes and distribution of ecological indicator concentrations including Chl-a in the Liaodong Bay waters were analyzed. The results showed that there were obvious spatial and temporal distribution characteristics of the ecological index concentrations in the Liaodong Bay. A trend of autumn (4.83 μg/L) >summer (4.13 μg/L) >spring (3.39 μg/L) in the concentration of Chl-a was observed, spring (9.41 mg/L) >summer (7.26 mg/L) >autumn (5.84 mg/L) in concentration of  was found, spring (0.76 mg/L) >autumn (0.56 mg/L) >summer (0.50 mg/L) in concentration of DO was occurred, spring (0.039 mg/L) >autumn (0.030 mg/L) >summer (0.026 mg/L) in the concentration of  was found and autumn (0.025 mg/L) >summer (0.020 mg/L) >spring (0.018 mg/L) in concentration of width=54,height=29,dpi=110 was observed. In terms of spatial distribution, the high concentration distribution of Chl-a, width=54,height=29,dpi=110 (spring and summer) and  (spring and summer) was found in the northeast Liaodong Bay and low in the southwest Liaodong Bay, and the concentration of  was high at the bayhead and baymouth and low in the middle. It was found that the important factors affecting the temporal and spatial distribution of ecological index concentrations were of Liao River and Daliao River at the upper basin of Liaodong Bay, with the relative limitation of phosphorus as nutrient limitation in the Liaodong Bay.
Key words:  Liaodong Bay    Delft3D    ecological dynamic model    chlorophyll a    spatio-temporal distribution of nutrient
               出版日期:  2024-03-13      发布日期:  2024-03-13      期的出版日期:  2024-03-13
中图分类号:  S 917.3  
  P 734.4  
基金资助: 国家自然科学基金(U21A20155，51879028)；辽宁省应用基础研究计划项目(2023030048-JH2/1013)；大连市科技创新基金(2021JJ11CG001)
引用本文:    
赵梓宇, 朱晓森, 王卓, 张明亮. 辽东湾叶绿素a与营养盐分布特征的数值模拟[J]. 大连海洋大学学报, 2024, 39(1): 134-143.
ZHAO Ziyu, ZHU Xiaosen, WANG Zhuo, ZHANG Mingliang. Numerical simulation of concentration distribution characteristics of ecological indicators in Liaodong Bay based on Delft3D model. Journal of Dalian Ocean University, 2024, 39(1): 134-143.
链接本文:  
https://xuebao.dlou.edu.cn/CN/10.16535/j.cnki.dlhyxb.2023-133  或          https://xuebao.dlou.edu.cn/CN/Y2024/V39/I1/134
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