摘要
三峡库区水华暴发及演变过程是否存在非线性行为,是目前国内外诸多学者关注的焦点。采用混沌非线性技术,对三峡库区支流水华暴发的污染演变效应进行了分析,发现在水域、水文、时间、藻类组成、浮游生物指标等因素存在着大量的变化不明显、关系模糊、突变、约束、开放、自组织的混沌非线性行为效应,演变过程轨迹符合非线性行为效应特征。建立了定量描述三峡水华暴发演变的非线性动力学模型,经三峡库区香溪河2次水华暴发现场监测数据的验证,误差为4%~9%。研究成果为认识水华暴发提供了新的思路和计算途径。
Whether the nonlinear behavior exists in algal bloom and its evolution in the Three Gorges Reservoir area are focused by researchers at home and abroad.By chaotic non-linear technology,the pollution and evolution of algal bloom in its tributaries are analyzed.The behavior of chaotic nonlinear effect characterized by insignificant change,fuzzy relations,mutation,constraint,open,self-organized is found in the factors such as waters,hydrology,time,composition of algae,plankton and so on.The evolution track is consistent with the characteristics of nonlinear behavior effect.We establish a non-linear dynamic model for quantitative description of the algal bloom evolution in the Three Gorges Reservoir area.The twice in-site monitoring data of Xiangxi River,a tributary in the reservoir area,shows the errors are in the scope of 4%~9%.The research achievement provides a new way for understanding the algal bloom.
出处
《人民长江》
北大核心
2010年第19期48-51,共4页
Yangtze River
关键词
水华
非线性动力学
效应
模型
三峡水库
algal bloom
nonlinear dynamics
effect
model
Three Gorges Reservoir
