Establishing the Evaluation Model for the Ecological Systems in Oil Pollution

石油污染生态系统评价模型的建立

• 批准号: 10650910
• 负责人: SHINODA Takeshi
• 金额: $ 2.18万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650910/
• 关键词: Oil pollution; System dynamics; Ecological Systems; Evaluation modeL

Oil pollution is a major contributor for the marine environment, it occurs mainly during the loading / unloading of tankers at berth and due to tanker collisions and accidents at sea.In the after such an event, natural delays and the wrong choice of systems to prevent the oil spread cause a large scale diffusion of oil, causing damage to the ecological systems and trouble to the socio-economic balance of local residents. So the oil pollution prevention systems and their efficacy are needed to be evaluated.The ecological systems at sea is regarded as an very complicated problem due to the many factors of which condition change with time passes, the dynamical simulation analysis model based on the system dynamics is constructed, of which the condition due to plant plankton, a zooplankton, detritus, dissolved oxygen and so on, is considered.As a practical example, a food chain at sea referring the date of Hiroshima bay by report of a fisheries experiment station at Hiroshima is analyzed by the dynamical simulation model. The numerical results of this model are remarkably affected depend on the conditions of the nature of oil sample, for example of poisonous character, a ratio of emulsification of oil, and so on. It is also necessary to reconsider the environmental effects from outside of the bay, weathering, the diffusion by oil pollution.

石油污染是海洋环境的主要污染源，主要发生在油轮在泊位装卸、油轮碰撞和海上事故等过程中，在发生此类事件后，由于自然延误和防止石油扩散系统的错误选择，导致石油大规模扩散，对生态系统造成破坏，并给当地居民的社会经济平衡带来麻烦。将海洋生态系统看作是一个复杂的问题，由于影响海洋生态系统的因素很多，其状态随时间变化，建立了基于系统动力学的动态模拟分析模型，其中浮游植物、浮游动物、碎屑、溶解氧等因素的影响，作为一个实例，利用该模型对以广岛渔业试验站报告为参考的广岛湾的一条海上食物链进行了分析。该模型的计算结果受油样性质的影响较大，如油样的毒性、乳化率等，还需考虑湾外环境效应、风化作用、油污染扩散等。