摘要
基于达尔文“适者生存”理论的热力学表述，本文把热力学概念“（Exergy）”作为一些重要模型参数的目标函数引入湖泊生态动力学模型．应用拥控制下的参数组合模拟程序实现了参数随时间的变化，并通过变化的模型参数来反映湖泊生态系统中物种组成和生态结构随时间的变化．这一改进克服了以往模型刚性较强、适应性差和生态系统特性考虑少的缺陷，该改进的湖泊生态动力学模型被成功用于滇池生态系统的模拟．
Based on the thermodynamic formulation of Darwin's Theory of Su,roival of the Ftitest,this papcr introduces the thermodynamic conccpt Exergy into an ecadynamic model for lakes as a goal function of some important model parameters,then the ccological properties of lake ecosystem are considercd extensively. The changes in medel parameters with timc are accomplished by using the modclling procedure of parameter combinations under exergy control, then the changes in the species composition and ecological structurc of ecosystem are reflected by the varying parameters.This improvcnment overcomes the original ccodynamic model's defccts of strong rigidity, poor adaptability and inadcquate considcrations of ccosystem properties. The modelled results of Di-anchi Lakc ccosystcm have shown that the improved ecodynamic model is satisfactory and practi-cable.
出处
《湖泊科学》
EI
CAS
CSCD
1997年第1期75-81,共7页
Journal of Lake Sciences
基金
"八五"科技攻关项目!85-908-02-02
关键词
YONG
生态动力学模型
湖泊
生态系统
Exergy, ecodynamic model, modelling of parameter combinations, lake ecosystem, Dianchi Lake
