城市绿地土壤入渗模型及参数确定  

Soil Infiltration Model of Urban Green Space and Parameter Determination

作　　者：杨栩[1] 尤学一[1] 季民[1] 潘留明[2] 王秀朵[2] 赵乐军[2] 

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]天津市市政工程设计研究院,天津300051

出　　处：《城市环境与城市生态》2011年第6期18-21,共4页Urban Environment & Urban Ecology

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07314-004-003)

摘　　要：采用降雨径流法和正交实验L9(34)获得了天津中心城区绿地土壤入渗曲线,选取Kostiakov模型、Kostiakov-Lewis模型、Philip模型、Horton模型、Collis-George模型对土壤入渗过程进行描述,利用粒子群算法确定模型参数,使用剩余平方和对模型进行评价。结果表明,Horton模型较常用的Kostiakov模型更好地描述了天津中心城区绿地土壤入渗特性,Philip模型效果最差。进一步利用4次野外实验验证了Horton模型的准确性,预测值与实测值的决定系数高于0.986。The soil infiltration curve of green space in the center of Tianjin was obtained by the rainfall-runoff method and orthogonal experiment L9（34）,and Kostiakov model,Kostiakov-Lewis model,Philip model,Horton model,and Collis-George model were selected to describe the soil infiltration process.The particle swarm optimization was used to determine the parameters of five models,and they were evaluated by the residual sum of squares.The results indicated that Horton model described the soil infiltration characteristics of green space in the center of Tianjin better than Kostiakov model did,which was widely used in practice,and the fitting effect of Philip model was the worst among the five models.Four field experiments were studied to further validate the accuracy of Horton model,and the determination coefficient between the predicted value and measured value was higher than 0.986.

关 键 词：粒子群算法 参数确定 土壤入渗模型 绿地土壤 

分 类 号：X522[环境科学与工程—环境工程]