《计算机应用》唯一官方网站 ›› 0, Vol. ›› Issue (): 143-147.DOI: 10.11772/j.issn.1001-9081.2024040476

• 先进计算 • 上一篇    下一篇

基于复杂网络的海洋食物网中污染物传播模型

彭云龙1, 李晗1(), 桑田1, 程宏明2   

  1. 1.辽宁工业大学 电子与信息工程学院,辽宁 锦州 121001
    2.北京纵横机电科技有限公司,北京 100094
  • 收稿日期:2024-04-25 修回日期:2024-07-04 接受日期:2024-07-08 发布日期:2025-01-24 出版日期:2024-12-31
  • 通讯作者: 李晗
  • 作者简介:彭云龙(2001—),男,安徽宣城人,硕士研究生,主要研究方向:复杂网络
    李晗(1984—),男,辽宁兴城人,副教授,博士,主要研究方向:复杂网络、嵌入式系统
    桑田(2001—),女,辽宁锦州人,硕士研究生,主要研究方向:差分隐私
    程宏明(1984—),男,辽宁沈阳人,副研究员,硕士,主要研究方向:嵌入式系统。
  • 基金资助:
    辽宁省“揭榜挂帅”科技攻关专项(2022JH1/10400009);辽宁省海洋经济发展项目(2022?46);辽宁省民生科技计划项目(2021JH2/10200002);辽宁工业大学教学改革研究项目(xjg2022033)

Pollutant transmission model in marine food web based on complex network

Yunlong PENG1, Han LI1(), Tian SANG1, Hongming CHENG2   

  1. 1.School of Electronics and Information Engineering,Liaoning University of Technology,Jinzhou Liaoning 121001,China
    2.Beijing Zongheng Electro-Mechanical Technology Company Limited,Beijing 100094,China
  • Received:2024-04-25 Revised:2024-07-04 Accepted:2024-07-08 Online:2025-01-24 Published:2024-12-31
  • Contact: Han LI

摘要:

针对核污水排海严重破坏全球海洋生态系统的问题,提出一种基于复杂网络的海洋生物污染传播模型,用于估计和模拟污染物的传播情况。首先,根据江苏近海北部海域、孔斯峡海域和巴伦支海北部海域部分生物群落间的捕食关系构建复杂网络;其次,使用欧拉对流扩散方程模拟假定海域的污染物扩散情况,继而考虑海洋环境与生物之间的污染物交换关系,并结合基于捕食关系的污染传播构建最终的传播模型;再次,基于节点综合重要性和生物群落营养级的对应关系进行离群点分析,并分析模型拟合中可能出现的异常现象;最后,模拟网络中生物节点污染物浓度随时间变化的情况,并根据各真实网络对应的生物群落营养级与污染物浓度关系进行拟合验证。实验结果表明,所提模型的拟合效果满足污染物在食物网上的生物积累与生物放大现象,并与巴伦支海部分生物节点中同位素检测结果相互验证,拟合数据与真实数据在均方误差、相关系数、绝对平均误差、R方和统计检验上均验证了所提模型有效性。

关键词: 复杂网络, 捕食关系, 传播动力学, 海洋污染, 离群点分析

Abstract:

In response to the serious damage to the global marine ecosystem caused by the discharge of nuclear wastewater into the sea. In this paper, a marine biological pollution transmission model based on complex network was proposed for estimating and simulating the transmission of pollutants. Firstly, a complex network was constructed on the basis of the predation relationships among some biological communities in northern waters of Jiangsu offshore area, Kongsi Gorge sea area, and northern area of Barents Sea. Secondly, the Euler convection diffusion equation was used to simulate the diffusion of pollutants in the assumed sea area, and then the pollutant exchange relationship between the marine environment and organisms was considered, and combined with the pollution transmission based on predation relationship, the final transmission model was constructed. Thirdly, outlier analysis was conducted on the basis of corresponding relationship between the comprehensive importance of nodes and the nutritional levels of biological communities, and potential anomalies in model fitting were analyzed. Finally, the concentration of pollutants of biological nodes in the network changing over time was simulated, and the fitting verification was carried out based on the relationship between the nutrient level of biological communities and pollutant concentration corresponding to each real network. Experimental results show that the fitting effect of the proposed model meets the biological accumulation and amplification phenomena of pollutants on the food web, and is mutually verified with the isotope detection results of some biological nodes in Barents Sea. All of the fitting data and real data verify the effectiveness of the proposed model in terms of mean square error, correlation coefficient, mean absolute error, R-squared, and statistical test.

Key words: complex network, predation relationship, transmission dynamics, marine pollution, outlier analysis

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