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Determination of NPS Pollutant Unit Loads from Different Landuses
| Content Provider | MDPI |
|---|---|
| Author | Choi, Jiyeon Park, Baekyung Kim, Jinsun Lee, Soyoung Ryu, Jichul Kim, Kyunghyun Kim, Yongseok |
| Copyright Year | 2021 |
| Description | This study aimed to estimate pollutant unit loads for different landuses and pollutants that reflected long-term runoff characteristics of nonpoint source (NPS) pollutants and recent environmental changes. During 2008–2014, 2026 rainfall events were monitored. The average values of antecedent dry days, total rainfall, rainfall intensity, rainfall duration, runoff duration, and runoff coefficient for each landuse were 3.8–5.9 d, 35.2–65.0 mm, 2.9–4.1 mm/h, 12.5–20.4 h, 12.4–27.9 h, and 0.24–0.45, respectively. Uplands (UL) exhibited high suspended solids (SS, 606.2 mg/L), total nitrogen (TN, 7.38 mg/L), and total phosphorous (TP, 2.27 mg/L) levels, whereas the runoff coefficient was high in the building sites (BS), with a high impervious surface ratio. The event mean concentration (EMC) for biological oxygen demand (BOD) was the highest in BS (8.0 mg/L), while the EMC was the highest in BS (in the rainfall range 50 mm). The unit loads for BOD (1.49–17.76 $kg/km^{2}$·d), TN (1.462–10.147 $kg/km^{2}$·d), TP (0.094–1.435 $kg/km^{2}$·d), and SS (15.20–327.70 $kg/km^{2}$·d) were calculated. The findings can be used to manage NPS pollutants and watershed environments and implement relevant associated management systems. |
| Starting Page | 7193 |
| e-ISSN | 20711050 |
| DOI | 10.3390/su13137193 |
| Journal | Sustainability |
| Issue Number | 13 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-06-26 |
| Access Restriction | Open |
| Subject Keyword | Sustainability Water Science and Technology Event Mean Concentration Landuse Nonpoint Source Pollution Stormwater Runoff Unit Load |
| Content Type | Text |
| Resource Type | Article |
