Impacts of land-use and climate variability on hydrological components in the Johor River basin, Malaysia

Tan, Mou Leong; Ibrahim, Ab Latif; Yusop, Zulkifli; Duan, Zheng; Ling, Lloyd

doi:10.1080/02626667.2014.967246

Cited by 87 publications

(78 citation statements)

References 36 publications

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“…It is clear that the simulated series are consistent with the observed series during both the calibration and validation periods. Furthermore, the results of the three statistical indicators indicated satisfactory performance of the SWAT model at all five stations (Table 7) based on to suggestions of Tan et al [25].…”

Section: Selection Of the Simulation Periodmentioning

confidence: 98%

“…The performance of SWAT was evaluated by three statistical indicators [25], the Nash-Sutcliffe efficiency (NSE) [46], coefficient of determination (R 2 ) and percentage of bias (PB; Gupta et al 1999) [47]. The NSE is widely used in hydrograph assessment to measure the "goodness-of-fit" between the observed and simulated runoff.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…[24]. The paired catchment approach is often applicable to areas that are less than 100 km 2 because it is difficult to find two large, similar basins [25]. Hydrological modeling overcomes the limitations of the above two methods and considers the relationships between climate, land cover and hydrological factors [26].…”

Section: Introductionmentioning

confidence: 99%

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Spatiotemporal Impacts of Climate, Land Cover Change and Direct Human Activities on Runoff Variations in the Wei River Basin, China

Li¹,

Chang²,

Wang³

et al. 2016

Water

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Previous studies that quantified variations in runoff have mainly focused on the combined impacts of climate and human activities or climate and land cover change. Few have separated land cover change from human activities, which is critical for effective management of water resources. This study aims to investigate the impact of changing environmental conditions on runoff using the Soil and Water Assessment Tool (SWAT) model; we examined three categories: climate, land cover change and direct human activities. The study area was the Wei River Basin, a typical arid to semi-arid basin that was divided into five sub-zones (UZ, MZ, DZ, JZ and BZ). Our results showed the following: (1) the calibrated SWAT model produced satisfactory monthly flow processes over the baseline period from 1978 to 1986; (2) compared to the baseline period, the impact of climatic variations decreased and the impact of direct human activities increased from the 1990s to the 2000s, while the impact of land cover change was generally stable; and (3) climatic variations were the main cause of runoff declines over the entire basin during the 1990s and in the UZ, MZ and JZ areas during the 2000s, while direct human activities were most important in the DZ and BZ areas during the 2000s.

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Section: Selection Of the Simulation Periodmentioning

confidence: 98%

Section: Performance Evaluationmentioning

confidence: 99%

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Spatiotemporal Impacts of Climate, Land Cover Change and Direct Human Activities on Runoff Variations in the Wei River Basin, China

Li¹,

Chang²,

Wang³

et al. 2016

Water

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“…This product has potential to be used for other hydro-climatic related applications such as hydrological modelling [57]. Further work is needed to validate the performance of TRMM products in other extreme precipitation indices that are recommended by the Expert Team on Climate Change Detection and Indices (ETCCDI) [58].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of TRMM Product for Monitoring Drought in the Kelantan River Basin, Malaysia

Tan

Chua

et al. 2017

Water

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Assessment of satellite precipitation products' capability for monitoring drought is relatively new in tropical regions. The purpose of this paper is to evaluate the reliability of the Tropical Rainfall Measuring Mission (TRMM) Multisatellite Precipitation Analysis (TMPA) 3B43 product in estimating the standardized precipitation index (SPI) in the Kelantan River Basin, Malaysia from 1998 to 2014, by comparing it with data from 42 rain gauges. Overall, the TMPA-3B43 performed well in the monthly precipitation estimation, but performed moderately in the seasonal scale. Better performance was found in the northeast monsoon (wet season) than in the southwest monsoon (dry season). The product is more reliable in the northern and north-eastern regions (coastal zone) compared to the central, southern and south-eastern regions (mountainous area). For drought assessment, the correlations between the TMPA-3B43 and ground observations are moderate at various time-scales (one to twelve months), with better performance at shorter time-scales. The TMPA-3B43 shows similar temporal drought behavior by capturing most of the drought events at various time-scales, except for the 2008-2009 drought. These findings show that the TMPA-3B43 is not suitable to be used directly for SPI estimation in this basin. More bias correction and algorithm improvement work are needed to improve the accuracy of the TMPA-3B43 in drought monitoring.

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“…It was first adopted by Hirsch et al from Mann-Kendall's test and was later used by Gan to analyze the hydroclimatic trends in Canadian prairies [16][17][18]. This test was used as the analytical tool of choice because the model works for the non-normalities in unusual data reports; and the model has high asymptotic efficiency [19].…”

Section: Methodsmentioning

confidence: 99%

Effects of Climate Change and Human Activity on Runoff in a Typical Loess Gullied-Hilly Region Watershed

Lv¹,

Zuo²,

Xiao³

et al. 2018

Pol. J. Environ. Stud.

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Impacts of land-use and climate variability on hydrological components in the Johor River basin, Malaysia

Cited by 87 publications

References 36 publications

Spatiotemporal Impacts of Climate, Land Cover Change and Direct Human Activities on Runoff Variations in the Wei River Basin, China

Spatiotemporal Impacts of Climate, Land Cover Change and Direct Human Activities on Runoff Variations in the Wei River Basin, China

Evaluation of TRMM Product for Monitoring Drought in the Kelantan River Basin, Malaysia

Effects of Climate Change and Human Activity on Runoff in a Typical Loess Gullied-Hilly Region Watershed

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