Chemical and physical weathering in the Min Jiang, a headwater tributary of the Yangtze River

Qin, Jianhua; Huh, Youngsook; Edmond, John M.; Du, Guoping; Ran, Jing

doi:10.1016/j.chemgeo.2005.09.011

Cited by 99 publications

(77 citation statements)

References 21 publications

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“…The study of (Qin et al 2006) showed that the chemical weathering flux based on data sampled during peak flow months is in best agreement with annual time-series estimates and the worst during lean flow. Our data of major ions of water samples collected in June and November, which are comparatively water-rich periods, give the close approximation to the annul average weathering flux.…”

Section: The Weathering Rate In the Catchmentmentioning

confidence: 66%

Hydrochemistry of the middle and upper reaches of the Yarlung Tsangpo River system: weathering processes and CO2 consumption

et al. 2015

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The study focuses on the chemical compositions of the river waters in the middle and upper reaches of the Yarlung Tsangpo river system. Samples were collected in two periods along the river system to analyze the spatiotemporal variation characteristics and to determine the weathering processes and CO 2 consumption. The results show that the chemical facies of river waters are dominated by Ca-HCO 3 type and the TDS values cover a wide range of 98.2-619.8 mg/l with an average value of 268.6 mg/l, which is higher than that of the global river waters. There are three major reservoirs (carbonates, evaporites, and silicates) contributing to the major ions, and the predominances of the reservoirs of different rivers show spatial heterogeneity. The chemical weathering rates of silicates and carbonates are 3.43 and 4.49 t/km 2 /year, respectively. Overall, the middle and upper reaches of Yarlung Tsangpo are responsible for 0.3 and 0.16 % of global atmospheric CO 2 consumption by silicates (1.7 9 10 5 mol/ km 2 /year) and carbonates (1.27 9 10 5 mol/km 2 /year), respectively. In addition, the chemical weathering fluxes of the catchments consume atmospheric CO 2 of 0.5456 Tg C/year, accounting for 0.14 % of the total organic carbon flux to the oceans by rivers globally.

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Section: The Weathering Rate In the Catchmentmentioning

confidence: 66%

Hydrochemistry of the middle and upper reaches of the Yarlung Tsangpo River system: weathering processes and CO2 consumption

et al. 2015

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“…Shen et al (2003) estimated the N load of the Yangtze to the sea to be 2.85 10 6 t TN/year in 1998. Geochemistry, weathering, and the load of total dissolved solids of the Minjiang, a major tributary of the Yangtze, were characterized by Qin et al (2006). King et al (2001) published an interesting collection of papers comparing the Yangtze with the Rhine River with respect to flood risks and land use.…”

Section: Introductionmentioning

confidence: 99%

How polluted is the Yangtze river? Water quality downstream from the Three Gorges Dam

Müller

Berg

Yao

et al. 2008

Science of The Total Environment

276

132

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“…However, only a few studies on water quality in the Min Jiang have focused on nitrogen contamination [9] and sediment yields [10]. Recent studies of surface water quality in the Min Jiang have reported on the chemical and physical weathering [8,11]. Further investigation of water contamination and pollutant sources is needed.…”

Section: Introductionmentioning

confidence: 99%

Water Quality Assessment and Apportionment of Pollution Sources of Selected Pollutants in the Min Jiang, a Headwater Tributary of The Yangtze River

Zhao¹,

Guo²,

Lei³

2015

Hydrol Current Res

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Chemical and physical weathering in the Min Jiang, a headwater tributary of the Yangtze River

Cited by 99 publications

References 21 publications

Hydrochemistry of the middle and upper reaches of the Yarlung Tsangpo River system: weathering processes and CO2 consumption

Hydrochemistry of the middle and upper reaches of the Yarlung Tsangpo River system: weathering processes and CO2 consumption

How polluted is the Yangtze river? Water quality downstream from the Three Gorges Dam

Water Quality Assessment and Apportionment of Pollution Sources of Selected Pollutants in the Min Jiang, a Headwater Tributary of The Yangtze River

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