Impact of suspended sediment and nutrient loading from land uses against water quality in the Hii River basin, Japan

Somura, Hiroaki; Takeda, Ikuo; Arnold, Jeffrey G.; Mori, Yasushi; Jeong, Jaehak; Kannan, Narayanan; Hoffman, Dennis W.

doi:10.1016/j.jhydrol.2012.05.032

Cited by 75 publications

(43 citation statements)

References 47 publications

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“…Soil erosion with transfer of SS from the soil surface to rivers can lead toincrease of the dissipation of nutrients from the soil and also enhance water pollution. Somura et al (2012) confirmed the relationship between phosphate and SS in the Hii River basin in Japan, and Hsu et al (2009) emphasized that during flood, the concentration of pollution increased rapidly. According to Table 2, transfer of the elements by SS during the mining period is of secondary importance.…”

Section: Results and Conclusionmentioning

confidence: 79%

Suspended sediments – associated water quality elements

Sadeghi

Yaghmaei

2015

Proc. IAHS

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Section: Results and Conclusionmentioning

confidence: 79%

Suspended sediments – associated water quality elements

Sadeghi

Yaghmaei

2015

Proc. IAHS

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“…LULC change has a significant spatiotemporal relationship with water supply and quality (Somura et al, 2012;Penha et al, 2016). The relationship between LULC and water supply/surface runoff is further compounded by climate at both the micro and larger scales (Beighley et al, 2008;Wilson and Weng, 2011).…”

Section: Introductionmentioning

confidence: 99%

Land Use, Microclimate, and Surface Runoff Linkages: Space-Time Modeling From Rokel-Seli River Basin, Sierra Leone

Wilson

Liang

Wilson

et al. 2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. This study mainly utilized the Soil and Water Assessment Tool (SWAT) together with SWAT-CUP, both free and open source software (FOSS), to construct a distributed hydrologic flow model for the Rokel-Seli River basin, Sierra Leone, in a bid to spatiotemporally evaluate the role of changes in land use/land cover (LULC) and microclimate on streamflow regimes. The model was informed by LULC data derived from three Landsat satellite images collected in 2002, 2010, and 2016. The LULC data was generated with the aid of several python libraries accessed through the FOSS Anaconda Navigator. LULC change analysis demonstrated that between 2002 and 2016, urban, agricultural, water, and mining lands expanded significantly but forest cover reduced the most (&minus;5.7%). While average annual surface runoff dramatically increased from 2002 to 2010 (31.7%), the period after the reservoir construction (2010&ndash;2016) recorded lower increase in surface runoff (0.9%). Result of the study suggested that the construction of a major reservoir to support hydroelectricity in concert with significant loss of forest cover and shrub played a greater role in increasing surface runoff compared with the influence of microclimate.

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“…Various types of industrial and agricultural activities have placed unprecedented pressure on the aquatic environment [1][2][3]. Moreover, people have placed new and higher requirements on the living environment, given the progress of science and technology and the increase in standards of living, especially in terms of water quality [4].…”

Section: Introductionmentioning

confidence: 99%

Non-Point Source Nitrogen and Phosphorus Assessment and Management Plan with an Improved Method in Data-Poor Regions

Chen

Liu

Peng

et al. 2017

Water

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Abstract:To enhance the quantitative simulation and integrated assessment of non-point source (NPS) pollution in plateau lakes in data-poor regions, a simple and practical NPS assessment method is developed by combining the improved export coefficient model (ECM) and the revised universal soil loss equation (RUSLE). This method is evaluated via application to the Chenghai Lake watershed (Yunnan Province, China), which contains a typical plateau lake. The estimated results reflect the actual situation within the watershed. The total nitrogen (TN) and total phosphorus (TP) loads in the study area in 2014 were 360.35 t/a (44.30% dissolved nitrogen (DN) and 55.70% adsorbed nitrogen (AN)) and 86.15 t/a (71.40% adsorbed phosphorus (AP)), respectively. The southern and eastern portions of the watershed are key regions for controlling dissolved and adsorbed pollutants, respectively. Soil erosion and livestock are the main TN and TP pollution sources in the study area and should be controlled first. Additionally, reasonable and practical suggestions are proposed to minimize water pollution according to a scenario analysis. The method in this study provides a foundation for scientific theories that can be used in water resources protection planning and the method can be applied to the NPS assessment of similar regions with scarce data.

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Impact of suspended sediment and nutrient loading from land uses against water quality in the Hii River basin, Japan

Cited by 75 publications

References 47 publications

Suspended sediments – associated water quality elements

Suspended sediments – associated water quality elements

Land Use, Microclimate, and Surface Runoff Linkages: Space-Time Modeling From Rokel-Seli River Basin, Sierra Leone

Non-Point Source Nitrogen and Phosphorus Assessment and Management Plan with an Improved Method in Data-Poor Regions

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