Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities
[Objective] The infiltration characteristics of urban green space runoff and the infiltration parameters for sponge facilities were studied in order to provide theoretical support for the construction of sponge facilities in built-up urban green space areas. [Methods] Taking Nanchang City, Jiangxi P...
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Science Press
2023-08-01
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| Series: | Shuitu baochi tongbao |
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| Online Access: | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20230418 |
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| author | Jiang Chunbo Xu Wenbin Gao Jiayu Li Jiake Liu Kehan Dang Zhenguo |
| author_facet | Jiang Chunbo Xu Wenbin Gao Jiayu Li Jiake Liu Kehan Dang Zhenguo |
| author_sort | Jiang Chunbo |
| collection | DOAJ |
| description | [Objective] The infiltration characteristics of urban green space runoff and the infiltration parameters for sponge facilities were studied in order to provide theoretical support for the construction of sponge facilities in built-up urban green space areas. [Methods] Taking Nanchang City, Jiangxi Province as a case area. Soil characteristic parameters were calculated by particle size distribution (PSD) and the soil-plant-air-water (SPAW) model. The Horton infiltration equations were fitted to single-ring infiltration field measurements of infiltration rate using Matlab to obtain the initial and stable infiltration rates and the attenuation coefficient. Soil water tension and unsaturated hydraulic conductivity were estimated by HYPROP2 and HYPROP-data evaluation software (HYPROP-DES). [Results] The stable infiltration rate was basically reached the stage of stable infiltration 5—10 min after the start of on-site infiltration, and most of the observed stable infiltration rates were less than 100 mm/h. The infiltration process was greatly affected by differences in hydrological soil groups and human disturbance. It took about seven days after full saturation for the infiltration rate of the soil to recover to the initial state. Based on the RECARGA model, a technical route for green space sponge facility reconstruction under the concept of sponge city was constructed. [Conclusion] The three methods can be used to deduce the process of urban green space soil infiltration and can improve the design accuracy of key parameters of sponge facilities. Initial water content and site factors need to be considered in the process of model calculations. |
| format | Article |
| id | doaj-art-44c88d3c867a48359fa22b4c637e7d95 |
| institution | OA Journals |
| issn | 1000-288X |
| language | zho |
| publishDate | 2023-08-01 |
| publisher | Science Press |
| record_format | Article |
| series | Shuitu baochi tongbao |
| spelling | doaj-art-44c88d3c867a48359fa22b4c637e7d952025-08-20T02:14:37ZzhoScience PressShuitu baochi tongbao1000-288X2023-08-0143414615310.13961/j.cnki.stbctb.2023.04.0181000-288X(2023)04-0146-08Runoff Infiltration in Urban Green Space and Parameters of Sponge FacilitiesJiang Chunbo0Xu Wenbin1Gao Jiayu2Li Jiake3Liu Kehan4Dang Zhenguo5State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaNanchang Urban Planning & Design Institute, Nanchang, Jiangxi 330038, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an, Shaanxi 710048, China[Objective] The infiltration characteristics of urban green space runoff and the infiltration parameters for sponge facilities were studied in order to provide theoretical support for the construction of sponge facilities in built-up urban green space areas. [Methods] Taking Nanchang City, Jiangxi Province as a case area. Soil characteristic parameters were calculated by particle size distribution (PSD) and the soil-plant-air-water (SPAW) model. The Horton infiltration equations were fitted to single-ring infiltration field measurements of infiltration rate using Matlab to obtain the initial and stable infiltration rates and the attenuation coefficient. Soil water tension and unsaturated hydraulic conductivity were estimated by HYPROP2 and HYPROP-data evaluation software (HYPROP-DES). [Results] The stable infiltration rate was basically reached the stage of stable infiltration 5—10 min after the start of on-site infiltration, and most of the observed stable infiltration rates were less than 100 mm/h. The infiltration process was greatly affected by differences in hydrological soil groups and human disturbance. It took about seven days after full saturation for the infiltration rate of the soil to recover to the initial state. Based on the RECARGA model, a technical route for green space sponge facility reconstruction under the concept of sponge city was constructed. [Conclusion] The three methods can be used to deduce the process of urban green space soil infiltration and can improve the design accuracy of key parameters of sponge facilities. Initial water content and site factors need to be considered in the process of model calculations.http://stbctb.alljournal.com.cn/stbctben/article/abstract/20230418rainfall runoffgreen spacemoisture characteristic curverestoration coefficient |
| spellingShingle | Jiang Chunbo Xu Wenbin Gao Jiayu Li Jiake Liu Kehan Dang Zhenguo Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities Shuitu baochi tongbao rainfall runoff green space moisture characteristic curve restoration coefficient |
| title | Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities |
| title_full | Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities |
| title_fullStr | Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities |
| title_full_unstemmed | Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities |
| title_short | Runoff Infiltration in Urban Green Space and Parameters of Sponge Facilities |
| title_sort | runoff infiltration in urban green space and parameters of sponge facilities |
| topic | rainfall runoff green space moisture characteristic curve restoration coefficient |
| url | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20230418 |
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