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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Main Authors: Jiang Chunbo, Xu Wenbin, Gao Jiayu, Li Jiake, Liu Kehan, Dang Zhenguo
Format: Article
Language:zho
Published: Science Press 2023-08-01
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.
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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
work_keys_str_mv AT jiangchunbo runoffinfiltrationinurbangreenspaceandparametersofspongefacilities
AT xuwenbin runoffinfiltrationinurbangreenspaceandparametersofspongefacilities
AT gaojiayu runoffinfiltrationinurbangreenspaceandparametersofspongefacilities
AT lijiake runoffinfiltrationinurbangreenspaceandparametersofspongefacilities
AT liukehan runoffinfiltrationinurbangreenspaceandparametersofspongefacilities
AT dangzhenguo runoffinfiltrationinurbangreenspaceandparametersofspongefacilities