浅水湖泊生态结构动力学变化的模拟研究

The dynamics of lake ecologicaol structure under different environmental conditions and various restoration measurements are hot issues for the researches on lake environmemt and ecological restoration. Comparied with morrnitoring and experiments, the dynamic modeling of lake ecological structure is regarded as a economic and effective method. The present study makes the combinations of specific and large-area lakes, Chinese and globle lakes, as well as actural and experimental lakes. The main progresses can be concluded as the following four aspects: (1) The dynamic laws and their mechenisums of lake ecological structure were sysmeticlly analysized on the base of the effects of eutrophication, acidificartion, and heavy meteal, organic chemical and oil pollution on lake ecological structures. (2)The theoretical frame and a set of comprehasive indicators for lake ecosystem health assessment were proposed, and they were applied to assess the healthy states of the Lake Chao and other 29 typic Chinese lakes. (3) A GIS-based method for lake eutrophication assessment was proposed and it was used to the Lake Chao. (4) The ecological structural dynamic model for the Lake Chao was developmed on the base of sysmetic analysis of the lake ecological structure, and the model was used to pridict the effects of macrophytoplants restoration on the lake wate quality and ecosystem health.These findings have importemt theroical and actual meanings concerning lake ecosystem dynamics and restoration.

系统分析浅湖生态结构时空变化规律及其动力学机制, 优化比较湖泊生态系统演化目标函数, 提出建立湖泊生态结构动力学模型及其与GIS集成的方法. 其成果为湖泊及其它水生生态低逞莼捌浣峁苟ρП浠芯刻峁┝酥匾椒? 建立的模拟系统可直接用于浅湖生态系扯ρа芯考昂椿指捶桨傅挠呕霾?