Trend analysis of water discharge and sediment load during the past three decades of development in the Langat basin,Malaysia |
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| Authors: | Hadi Memarian Jamal B Talib Alias M Sood Karim C Abbaspour |
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| Institution: | 1. Department of Land Management, Faculty of Agriculture , Universiti Putra Malaysia (UPM) , 43400 Serdang, Selangor D. E., Malaysia;2. Department of Forest Production, Faculty of Forestry , Universiti Putra Malaysia (UPM) , 43400 Serdang, Selangor D. E., Malaysia;3. Swiss Federal Institute of Aquatic Science and Technology , EAWAG, Ueberlandstr 133, PO Box 611, CH-8600 , Dübendorf , Switzerland |
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| Abstract: | Abstract In this study, the trends of water discharge and sediment load from three hydrometric stations over the past 25 years of development in the state of Selangor, Peninsular Malaysia, were analysed using the Mann-Kendall and Pettitt tests. Landscape metrics for establishing the relationship between land-use changes and trends of hydrological time series were calculated. The hydrological trends were also studied in terms of rainfall variations and manmade features. The results indicate upward trends in water discharge in the Hulu Langat sub-basin and in sediment load in the Semenyih sub-basin. These increasing trends were mainly caused by rapid changes in land use. Upward trends of hydrological series in the Hulu Langat sub-basin matched its rainfall pattern. In the Lui sub-basin, however, trends of hydrological series, and variations in rainfall and land use were not statistically significant. Editor Z.W. Kundzewicz; Associate editor K. Hamed Citation Memarian, H., Balasundram, S.K., Talib, J.B., Sood, A.M., and Abbaspour, K.C., 2012. Trend analysis of water discharge and sediment load during the past three decades of development in the Langat basin, Malaysia. Hydrological Sciences Journal, 57 (6), 1207–1222. |
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| Keywords: | trend analysis Mann-Kendall test Pettitt test landscape metrics water discharge sediment load |
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