First flush of non-point source pollution and hydrological effects of LID in a Guangzhou community

Zeng, Jian‐Bing; Huang, Guoru; Luo, Haiwan; Mai, Yepeng; Wu, Haichun

doi:10.1038/s41598-019-50467-8

Cited by 27 publications

(7 citation statements)

References 25 publications

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“…The effect of BMPs can be enhanced when coupled with maintenance of soil loss reduction infrastructure in high-altitude arable lands, which were identified as major sources of agricultural non-point pollutants in South Korea [53]. For the urban areas in the basin, reinforcement of early rainwater treatments by LID (low impact development) application should be considered to allow for more natural purification [54,55].…”

Section: Implications For Water Resources Managementmentioning

confidence: 99%

Impact Assessment of Climate Change on the Near and the Far Future Streamflow in the Bocheongcheon Basin of Geumgang River, South Korea

Kim

Lee

et al. 2021

Water

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Highly concentrated precipitation during the rainy season poses challenges to the South Korean water resources management in efficiently storing and redistributing water resources. Under the new climate regime, water resources management is likely to become more challenging with regards to water-related disaster risk and deterioration of water quality. To alleviate such issues by adjusting management plans, this study examined the impact of climate change on the streamflow in the Bocheongcheon basin of the Geumgang river. A globally accepted hydrologic model, the HEC-HMS model, was chosen for the simulation. By the calibration and the validation processes, the model performance was evaluated to range between “satisfactory” and “very good”. The calibrated model was then used to simulate the future streamflow over six decades from 2041 to 2100 under RCP4.5 and RCP8.5. The results indicated significant increase in the future streamflow of the study site in all months and seasons over the simulation period. Intensification of seasonal differences and fluctuations was projected under RCP 8.5, implying a challenge for water resources managers to secure stable sources of clean water and to prevent water-related disasters. The analysis of the simulation results was applied to suggest possible local adaptive water resources management policy.

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Section: Implications For Water Resources Managementmentioning

confidence: 99%

Impact Assessment of Climate Change on the Near and the Far Future Streamflow in the Bocheongcheon Basin of Geumgang River, South Korea

Kim

Lee

et al. 2021

Water

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“…According to the 'SWMM User Manual' and the studies of Zeng et al (2019) and Kreb et al (2013), as well as the concentration data of rainwater pollutants, the model parameters in the SWMM software are shown in Table 1.…”

Section: Swmm Water Quality Model Parametersmentioning

confidence: 99%

Evaluation model of LID facilities based on the influence of water resource value

Pei

et al. 2021

Journal of Water Supply: Research and Technology-Aqua

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Low-impact development (LID) facilities can not only effectively control rainwater runoff and its pollution, but also enhance the value of urban water resources in water systems. Current studies usually pay more attention to the effect of pollution control indicators, and there are few reports on the evaluation of LID facilities from the perspective of enhancing the value of water resources. Taking the Maluan Bay area of Haicang, Xiamen as an example, an evaluation model of water resource value was established based on the SWMM software and the pollution loss model. From the perspective of economic quantification, the value of water resources brought by three types of LID facilities, such as green roofs, permeable pavement and infiltration gallery, under rainfall conditions in different recurrence intervals was simulated and calculated. In the single rainfall event of 1–10a recurrence interval, the water resource value brought by the green roofs is 679.14–787.49 RMB/hm2, the permeable pavement is 79.07–383.37 RMB/hm2 and the infiltration gallery is 825.45–1,021.79 RMB/hm2. The results show that the value of water resources brought by the three types of LID facilities decreases with the increase of rainfall recurrence interval.

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“…Urban underlying surfaces conditions are key drivers of urban runoff quality. Numerous studies on stormwater management strategies have focused on the characteristics of stormwater runoff occurring on different urban underlying surfaces (Gilbert and clausen, 2006;Ou et al, 2011;Ouyang et al, 2010), including the initial runoff erosion effect (Soller et al, 2005;Ouyang et al, 2010;Zeng et al, 2019) and runoff models and other aspects (Deletic, 1998;Yu et al, 2016;Andrzejc et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Low Impact Development (LID) had been imposed for increasing rainwater infiltration into the soil or vegetation in urban areas in Guangzhou (Zeng et al, 2019). LID infrastructure was widely used, mainly by ecological tree pools, green roofs, rain gardens, grasslands, and permeable pavements (Tang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…LID infrastructure was widely used, mainly by ecological tree pools, green roofs, rain gardens, grasslands, and permeable pavements (Tang et al, 2021). Many of the traditional roofs and green spaces were transformed based on the corresponding LID designing (Zeng et al, 2019). The main aim of LID was to reduce initial rainwater pollution caused by the quick wash-off of pollutants accumulated on the watershed surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Migration Characteristics of Stormwater Runoff Pollutants on Different Underlying Surfaces in Guangzhou, China

Pan¹,

Li²,

Gao³

et al. 2021

Front. Earth Sci.

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Stormwater runoff is identified as urban nonpoint source pollution that increasingly introduces contaminants to urban water bodies and impedes sustainable development. The pollution load of runoff varies due to the interception of different land cover types during the urban hydrological process. During the rainy season (June–August) in 2018, five different underlying surfaces (green roof, parking lot, urban road, parkway, and grassland) were selected in Guangzhou to analyze the migration characteristics of stormwater runoff pollutants. The concentrations of heavy metals, such as chromium (Cr), cadmium (Cd), lead (Pb), and mercury (Hg), as well as total nitrogen (TN), total phosphorus (TP), and polycyclic aromatic hydrocarbons (PAHs) were collected and analyzed on different underlying surfaces with the rainfall data at the beginning of a stormwater runoff event. The results showed that PAHs, heavy metals, and TP existed mainly in the form of particles; nitrogen was mainly present as ammonia and nitrate; and the TN, TP, PAHs, and heavy metal were significantly different in the stormwater runoff on each underlying surface. The pollutant concentration in urban road runoff was the highest, accounting for 40–70% of the total pollutant concentration in the stormwater runoff, and the pollutant concentration in green roof runoff was the lowest, accounting for 10–40% of the total pollutant concentration in the runoff. An obvious effect of initial rainfall erosion was observed during stormwater runoff from urban roads and parking lots, and the scouring effect on grasslands and green roofs was mainly due to the many factors affecting the underlying surface during the middle and late stages. The rates of reduction of heavy metals were the most significant. The effect of water purification was positively correlated with stormwater runoff duration. The rates of reduction of TN, heavy metals (Cr, Cd, and Hg), and PAHs in the grassland areas were 35.20 ± 26.28, 0.24 ± 10.13, 71.77 ± 10.97,32.62 ± 110.48, and 41.30 ± 8.78%, respectively. This study could provide a theoretical basis for preventing and managing pollutants in urban stormwater runoff.

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First flush of non-point source pollution and hydrological effects of LID in a Guangzhou community

Cited by 27 publications

References 25 publications

Impact Assessment of Climate Change on the Near and the Far Future Streamflow in the Bocheongcheon Basin of Geumgang River, South Korea

Impact Assessment of Climate Change on the Near and the Far Future Streamflow in the Bocheongcheon Basin of Geumgang River, South Korea

Evaluation model of LID facilities based on the influence of water resource value

Analysis of the Migration Characteristics of Stormwater Runoff Pollutants on Different Underlying Surfaces in Guangzhou, China

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