摘要
以再循环测度指标为衡量标准,对城市生态网模型变量的映射关系进行了优化,从而更为精确地得到了生态网模型中变量之间的关系,对一类模型补充了变量之间存在的隐性关系,也将一类模型中冗余的映射关系剔除,并且对比分析了映射关系不足与冗余的原因.结果表明:1)分别对二线、三线城市生态网模型填补3条和1条映射关系后,生态网模型的映射关系达到最优,最适个数分别为61和59;2)综合考虑所有类别的城市,统一构建城市生态网模型,则存在映射关系冗余现象,通过对17条冗余映射关系的删减,生态网模型的映射关系达到最优,最适个数为65.
Optimizing the relationships of urban ecological network model among variables with measure of recycling,and then obtained the relationships among variables in the model of ecological network more accurately.The implicit relationships among variables for a class of models are added and redundant mapping relationships in another class of models are eliminated.The reasons of insufficiency and redundancy of the mapping relationships are analyzed.The results show that：1）After adding 3and 1mapping relationships to the second-tier and third-tier cities,the mapping relationships of two models achieve the optimal with the number of 61 and 59.2）All categories of cities are being considered and they construct the model of urban ecological network structure,there exists redundancy of mapping relationships.After deleting 17 redundant mapping relationships,the optimized model and solutions are determined.The number of the optimal mapping relationships is 65.
出处
《河北大学学报（自然科学版）》
CAS
北大核心
2014年第6期629-636,共8页
Journal of Hebei University(Natural Science Edition)
基金
河北省科技攻关计划项目(06276902B)
关键词
再循环测度方法
模型优化
城市生态网模型
状态变量
映射关系
measure of recycling
optimization of model
model of urban ecological network structure
state variables
mapping relationships
