KANGDe-jun,QIUFu-jie,WENRu-jie,et al.Analysis on Local and Global Sensitivity of LID Parameters Based on SWMM[J].China Water & Wastewater,2023,39(17):131-138.
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Analysis on Local and Global Sensitivity of LID Parameters Based on SWMM

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第17期 Page: 131-138 Column: Date of publication: 2023-09-01
Author(s):
KANG　De-jun1; 2;  QIU　Fu-jie1; 3;  WEN　Ru-jie1; 4;  WU　Duan-wei1; 5;  LAI　Li-bao-yi1; 6;  ZHAO　Ying7
（1. College of Civil Engineering， Fuzhou University， Fuzhou 350116， China； 2. Jinjiang Science and Education Park of Fuzhou University， Jinjiang 362251， China； 3. Huadong Engineering Corporation， Fuzhou 350001， China； 4. Capital Engineering & Research Incorporation Limited， Beijing 100176， China； 5. Central & Southern China Municipal Engineering Design and Research Institute Co. Ltd.， Wuhan 430010， China； 6. Zhuotian Town Government of Changting County in Longyan City of Fujian Province， Longyan 366300， China； 7. Chinese Research Academy of Environmental Sciences， Beijing 100012， China）
Keywords:
SWMM (storm water management model);  LID (low impact development) parameters;  sensitivity analysis;  MATLAB
Abstract:
Aiming at the sensitivity programming analysis of LID (low impact development) parameters of SWMM (storm water management model) and its impact on simulation, MATLAB and Visual Basic.NET code were compiled, and the modified Morris screening method and multiple stepwise regression method were used to analyze the sensitivity of 29 empirical parameters of PP (permeable pavement), GR (green roof) and BC (bioretention cell) in the SWMM of Jinjiang Science and Education Park of Fuzhou University. The parameter that showed great sensitivity to the total runoff and COD was the LID usage module parameter: % of Impervious Area Treated, indicating that it was the key parameter for LID simulation. The sensitivity of PP parameters to total runoff decreased with the increase of rainfall intensity, but the sensitivity of GR and BC parameters to total runoff increased with the increase of rainfall intensity, and the sensitivity of the three LID parameters to the total COD was relatively stable, indicating that the LID control module parameters showed different sensitivities to different target variables. Multiple stepwise regression method showed more sensitive parameters than modified Morris screening method, indicating that the former could explore the linear relationship between parameters and target variables and the impact of parameter interaction on the results.
Last Update: 2023-09-01