Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin
Land use plays a significant role in determining the spatial patterns of water quality in the Johor River Basin (JRB), Malaysia. In the recent years, there have been several occurrences of pollution in these rivers, which has generated concerns over the long-term sustainability of the water resource...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/10356/159720 |
| _version_ | 1826118287772090368 |
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| author | Pak, Hui Ying Chuah, C. Joon Yong, Ee Ling Snyder, Shane Allen |
| author2 | Nanyang Environment and Water Research Institute |
| author_facet | Nanyang Environment and Water Research Institute Pak, Hui Ying Chuah, C. Joon Yong, Ee Ling Snyder, Shane Allen |
| author_sort | Pak, Hui Ying |
| collection | NTU |
| description | Land use plays a significant role in determining the spatial patterns of water quality in the Johor River Basin (JRB), Malaysia. In the recent years, there have been several occurrences of pollution in these rivers, which has generated concerns over the long-term sustainability of the water resources in the JRB. Specifically, this water resource is a shared commodity between two states, namely, Johor state of Malaysia and Singapore, a neighbouring country adjacent to Malaysia. Prior to this study, few research on the influence of land use configuration on water quality have been conducted in Johor. In addition, it is also unclear how water quality varies under different seasonality in the presence of point sources. In this study, we investigated the influence of land use and point sources from wastewater treatment plants (WWTPs) on the water quality in the JRB. Two statistical techniques - Multivariate Linear Regression (MLR) and Redundancy Analysis (RA) were undertaken to analyse the relationships between river water quality and land use configuration, as well as point sources from WWTPs under different seasonality. Water samples were collected from 49 sites within the JRB from March to December in 2019. Results showed that influence from WWTPs on water quality was greater during the dry season and less significant during the wet season. In particular, point source was highly positively correlated with ammoniacal‑nitrogen (NH3-N). On the other hand, land use influence was greater than point source influence during the wet season. Residential and urban land use were important predictors for nutrients and organic matter (chemical oxygen demand); and forest land use were important sinks for heavy metals but a significant source of manganese. |
| first_indexed | 2024-10-01T04:41:16Z |
| format | Journal Article |
| id | ntu-10356/159720 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:41:16Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1597202022-06-29T07:42:23Z Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin Pak, Hui Ying Chuah, C. Joon Yong, Ee Ling Snyder, Shane Allen Nanyang Environment and Water Research Institute Engineering::Environmental engineering Land Use Configuration Water Quality Land use plays a significant role in determining the spatial patterns of water quality in the Johor River Basin (JRB), Malaysia. In the recent years, there have been several occurrences of pollution in these rivers, which has generated concerns over the long-term sustainability of the water resources in the JRB. Specifically, this water resource is a shared commodity between two states, namely, Johor state of Malaysia and Singapore, a neighbouring country adjacent to Malaysia. Prior to this study, few research on the influence of land use configuration on water quality have been conducted in Johor. In addition, it is also unclear how water quality varies under different seasonality in the presence of point sources. In this study, we investigated the influence of land use and point sources from wastewater treatment plants (WWTPs) on the water quality in the JRB. Two statistical techniques - Multivariate Linear Regression (MLR) and Redundancy Analysis (RA) were undertaken to analyse the relationships between river water quality and land use configuration, as well as point sources from WWTPs under different seasonality. Water samples were collected from 49 sites within the JRB from March to December in 2019. Results showed that influence from WWTPs on water quality was greater during the dry season and less significant during the wet season. In particular, point source was highly positively correlated with ammoniacal‑nitrogen (NH3-N). On the other hand, land use influence was greater than point source influence during the wet season. Residential and urban land use were important predictors for nutrients and organic matter (chemical oxygen demand); and forest land use were important sinks for heavy metals but a significant source of manganese. Economic Development Board (EDB) Nanyang Technological University Funding: The authors are grateful for the financial support provided by the Singapore Economic Development Board and also for the Research Fund for the Masters Programme by the Nanyang Environment and Water Research Institute, Nanyang Technological University and for the support of the School of Civil and Environmental Engineering, Nanyang Technological University. 2022-06-29T07:42:23Z 2022-06-29T07:42:23Z 2021 Journal Article Pak, H. Y., Chuah, C. J., Yong, E. L. & Snyder, S. A. (2021). Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin. Science of the Total Environment, 780, 146661-. https://dx.doi.org/10.1016/j.scitotenv.2021.146661 0048-9697 https://hdl.handle.net/10356/159720 10.1016/j.scitotenv.2021.146661 34030308 2-s2.0-85103384603 780 146661 en Science of the Total Environment © 2021 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Land Use Configuration Water Quality Pak, Hui Ying Chuah, C. Joon Yong, Ee Ling Snyder, Shane Allen Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin |
| title | Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin |
| title_full | Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin |
| title_fullStr | Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin |
| title_full_unstemmed | Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin |
| title_short | Effects of land use configuration, seasonality and point source on water quality in a tropical watershed: a case study of the Johor River Basin |
| title_sort | effects of land use configuration seasonality and point source on water quality in a tropical watershed a case study of the johor river basin |
| topic | Engineering::Environmental engineering Land Use Configuration Water Quality |
| url | https://hdl.handle.net/10356/159720 |
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