海岸带底栖植物群落形成的生物化学过程建模

IF 0.7 Q4 OCEANOGRAPHY
E. Vasechkina, T. A. Filippova
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引用次数: 6

摘要

介绍提出了一种基于面向对象的海洋生态系统底层植物群落模拟模型。数据和方法。大型藻类生长的动力学模型基于常微分方程系统,该系统描述了光合作用和有机物的产生、氮和磷的吸收以及有机物和氧气提取到环境中的过程。选择光合活性辐射(标准杆数)、水温、水中养分含量为控制变量。后果该模型允许根据控制变量估计藻类组织中的氮和磷含量、光合作用速率、吸收营养物质的实际参数和有机物的提取。得到了控制变量不变时系统稳态的解析解。提出了利用海藻的光合参数和动力学参数对铊比表面积的依赖性对其进行参数化。用预设的控制变量动力学模拟了红藻龙须菜生物量在一年内的生长(针对克里米亚南部海岸)。计算了这些元素在藻类组织中的年产氧量、氮磷吸收量和累积量;估计了进入下一营养级的有机物(底栖生物和有鳍鱼)的体积。这些结果与研究区域公布的观测生态系统数据一致。讨论和结论。所开发的模型将作为一个单独的单元,在海洋生态系统的三维面向对象物理化学生物模型中模拟底层植物群落的动力学。铊表面。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling of the Biochemical Processes in the Benthic Phytocenosis of the Coastal Zone
Introduction . A simulation model of bottom phytocenosis based on object-oriented approach to marine ecosystems was proposed. Data and methods . The dynamic model of macroalgae growth is based on the system of ordinary differential equations describing the processes of photosynthesis and production of organic matter, nitrogen and phosphorus uptake, and extraction of organic matter and oxygen into the environment. Photosynthetically active radiation (PAR), water temperature, a content of nutrients in the water were chosen as the control variables. Results . The model allows an estimation of nitrogen and phosphorus content in algae tissues, rate of photosynthesis, actual parameters of uptake nutrients and extraction of organic matter depending on the control variables. Analytical solutions for the steady state of a system at constant control variables were obtained. Parameterization of photosynthetic and kinetic parameters of seaweed using their de-pendencies of the specific surface of thalli was proposed. The growth of red macroalga Gracilaria biomass over a year was simulated with a preset dynamics of control variables (for the Southern Coast of Crimea). Yearly oxygen production, nitrogen and phosphorus uptake and accumulated quan-tity of these elements in algae tissues were calculated; the volume of organic matter coming to the next trophic level (benthic organisms and finfish) was estimated. The results correspond to the pub-lished observational ecosystem data in the region under study. Discussion and conclusion . The developed model will be used as a separate unit simulating the dynamics of bottom phytocenosis in a three-dimensional object-oriented physical-chemical-biological model of the marine ecosystem. surface of thalli.
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来源期刊
Physical Oceanography
Physical Oceanography OCEANOGRAPHY-
CiteScore
1.80
自引率
25.00%
发文量
8
审稿时长
24 weeks
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