Characteristics of carbonate, evaporite and silicate weathering in Huanghe River basin: A comparison among the upstream, midstream and downstream

Fan, Bo; Zhao, Zhi‐Qi; Tao, Fenggang; Liu, Baojian; Tao, Zhenghua; Gao, Shuang; Zhang, Lihua

doi:10.1016/j.jseaes.2014.09.005

Cited by 112 publications

(48 citation statements)

References 37 publications

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“…The Ca 2+ +Mg 2+ vs. HCO3 − +SO4 2− (Figure 10f) of all water samples were located below the equilibrium line, indicating that the possible ion exchange between (Na + , K + ) and (Ca 2+ , Mg 2+ ) or the precipitation of Ca 2+ and Mg 2+ [46,47]. The saturation of water samples in river water is given in Table 5.…”

Section: Bivariate Plot and Dissolution Reactionmentioning

confidence: 96%

“…Figure 10e shows that the natural water samples were mainly located above the equilibrium line, which showed the dissolution of carbonate, while the samples of the section replenished by reclaimed water were mainly located below the equilibrium line, indicating the effects of evaporation. The Ca 2+ +Mg 2+ vs. HCO 3 − +SO 4 2− (Figure 10f) of all water samples were located below the equilibrium line, indicating that the possible ion exchange between (Na + , K + ) and (Ca 2+ , Mg 2+ ) or the precipitation of Ca 2+ and Mg 2+ [46,47].…”

Section: Bivariate Plot and Dissolution Reactionmentioning

confidence: 97%

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Spatio-Temporal Variation and Controlling Factors of Water Quality in Yongding River Replenished by Reclaimed Water in Beijing, North China

Zheng

et al. 2017

Water

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Reclaimed water is useful for replenishing dried up rivers in North China, although changes in water quality could be an issue. Therefore, it is essential to understand the spatio-temporal variation and the controlling factors of water quality. Samples of Yongding River water were collected seasonally, and 24 water quality parameters were analyzed in 2015. All waters were alkaline, and nitrate-nitrogen was the main form of nitrogen, while phosphorus was mostly below detection level. The water quality parameters varied in time and space. Cluster analysis showed a distinct difference between winter and the other seasons and between the natural river section and the section with reclaimed water. Based on the analysis of Gibbs plots, principal component analysis, and ionic relationships, the water chemistry was controlled by dissolution of rocks in natural river section, the quality of replenished water, the effects of dilution, and the reaction of aqueous chemistry in the reclaimed water section. The positive oxidation environment in most of the river water was conducive to the formation of nitrate-nitrogen by nitrification, and not conducive to denitrification.

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Section: Bivariate Plot and Dissolution Reactionmentioning

confidence: 96%

Section: Bivariate Plot and Dissolution Reactionmentioning

confidence: 97%

Spatio-Temporal Variation and Controlling Factors of Water Quality in Yongding River Replenished by Reclaimed Water in Beijing, North China

Zheng

et al. 2017

Water

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“…Total dissolved solids (TDSs) of water samples varied from 35.3 to 205 mg L −1 , with an average of 75.2 mg L −1 . Compared with the major rivers in China, the average TDS was significantly lower than the Changjiang (224 mg L −1 , Chetelat et al, 2008), the Huanghe (557 mg L −1 , Fan et al, 2014) and the Zhujiang (190 mg L −1 , S. . However, the average TDS was comparable to the rivers draining silicaterock-dominated areas, e.g., the upper Ganjiang in Ganzhou, south China (63 mg L −1 , Ji and Jiang, 2012), the Amur in northern China (70 mg L −1 , Moon et al, 2009), the Xishui in Hubei, central China (101 mg L −1 , Wu et al, 2013) and North Han River in South Korea (75.5 mg L −1 , Ryu et al, 2008).…”

Section: Resultsmentioning

confidence: 88%

“…On the whole SECRB scale, 3.95×10 6 and 4.09×10 6 t a −1 of dissolved solids originating from silicate and carbonate weathering, respectively, are transported into the East and South China seas by rivers in this region. Compared with the largest three river basins (the Changjiang, the Huanghe and the Xijiang) in China, the flux of silicate weathering calculated for the SECRB is lower than the Changjiang (9.5 × 10 6 t a −1 , Gaillardet et al, 1999) but higher than the Huanghe (1.52 × 10 6 t a −1 , Fan et al, 2014) and the Xijiang (2.62 × 10 6 t a −1 , Xu and Liu, 2010). The silicate and carbonate chemical weathering rates for these river watersheds were 14.2-35.8 and 1.8-52.1 t km −2 a −1 , respectively.…”

Section: W Liu Et Al: Geochemistry Of the Dissolved Loads During Himentioning

confidence: 83%

“…CO 2 consumption rates by carbonate and silicate weathering are from 17.9 to 530 × 10 3 mol km −2 a −1 (averaging at 206 × 10 3 mol km −2 a −1 ) and from 167 to 460 × 10 3 mol km −2 a −1 (averaging at 281×10 3 mol km −2 a −1 ) for major river catchments in the SECRB. The CO 2 consumption rates by silicate weathering in the SECRB are higher than that of major rivers in the world and China, such as the Amazon (174 × 10 3 mol km −2 a −1 , Mortatti and Probst, 2003), the Mississippi and the Mackenzie (66.8 and 34.1 × 10 3 mol km −2 a −1 , Gaillardet et al, 1999), the Changjiang (112×10 3 mol km −2 a −1 , Chetelat et al, 2008), the Huanghe (35×10 3 mol km −2 a −1 , Fan et al, 2014), the Xijiang (154× 10 3 mol km −2 a −1 , Xu and Liu, 2010), the Longchuanjiang (173×10 3 mol km −2 a −1 , Li et al, 2011), the Mekong (191× 10 3 mol km −2 a −1 , Li et al, 2014), three large rivers in eastern Tibet (103-121 × 10 3 mol km −2 a −1 , Noh et al, 2009), the Hanjiang in central China (120 × 10 3 mol km −2 a −1 , Li et al, 2009) and the Sonhuajiang in northeastern China (66.6 × 10 3 mol km −2 a −1 , Liu et al, 2013). The high CO 2 consumption rates by silicate weathering in the SECRB could be attributed to extensive distribution of silicate rocks, high runoff and favorable climatic conditions.…”

Section: Co 2 Consumption and The Role Of Sulfuric Acidmentioning

confidence: 91%

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Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration

Liu

Sun

et al. 2018

Biogeosciences

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Abstract. The southeastern coastal region is one of the most developed and populated areas in China. Meanwhile, it has been severely impacted by acid rain over many years. The chemical compositions and carbon isotope compositions of dissolved inorganic carbon (δ 13 C DIC ) in river water in the high-flow season were investigated to estimate the chemical weathering and associated atmospheric CO 2 consumption rates as well as the acid-deposition disturbance. Mass balance calculations indicated that the dissolved loads of major rivers in the Southeast Coastal River Basin (SECRB) were contributed to by atmospheric (14.3 %, 6.6 %-23.4 %), anthropogenic (15.7 %, 0 %-41.1 %), silicate weathering (39.5 %, 17.8 %-74.0 %) and carbonate weathering inputs (30.6 %, 3.9 %-62.0 %). The silicate and carbonate chemical weathering rates for these river watersheds were 14.2-35.8 and 1.8-52.1 t km −2 a −1 , respectively. The associated mean CO 2 consumption rate by silicate weathering for the whole SECRB was 191 × 10 3 mol km −2 a −1 . The chemical and δ 13 C DIC evidence indicated that sulfuric and nitric acid (mainly from acid deposition) were significantly involved in the chemical weathering of rocks. There was an overestimation of CO 2 consumption at 0.19 × 10 12 g C a −1 if sulfuric and nitric acid were ignored, which accounted for about 33.6 % of the total CO 2 consumption by silicate weathering in the SECRB. This study quantitatively highlights the role of acid deposition in chemical weathering, suggesting that the anthropogenic impact should be seriously considered in estimations of chemical weathering and associated CO 2 consumption.

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Spatial characteristics and controlling factors of chemical weathering of loess in the dry season in the middle Loess Plateau, China

Xiao

Zhang

Jin

2016

Hydrological Processes

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Hydrochemistry methods were used to decipher the weathering and geochemical processes controlling solute acquisition of river waters in the dry season in the middle Loess Plateau (MLP), one of the most severely eroded areas and turbid riverine systems in the world. River waters were neutral to slightly alkaline with pH varying from 7.6 to 9.6. The total dissolved solids decreased from northwest to southeast with a mean value of 804 mg/l, much higher than the global average and other large rivers in China. Ternary diagram showed that river waters were dominated by Na+, HCO3−, and Cl− with the main water‐type of HCO3−–Cl−–Na+. Saturation index values, Mg2+, Ca2+, and HCO3− analyses indicated the preferential Ca2+ removal by calcite precipitation. Gibbs plots and stoichiometry plots indicated that the dissolved solutes were mainly derived from rock weathering with minor anthropogenic and atmospheric inputs. Samples in the northwestern basin are also influenced by evaporation. A forward model of mass budget calculation showed that, owing to high soluble characteristics, evaporite dissolution was a major feature of river waters and contributed 41% to the total dissolved cations on average, while carbonate and silicate weathering contributed 28%,and 25% on average, respectively. Besides evaporite dissolution, cation exchange is also responsible for the high concentrations of Na+ in river water. Spatial variations showed that evaporite dissolution and silicate weathering were higher in the northern basin, whereas carbonate weathering was higher in the southern basin. Different from most rivers in the world, the physical erosion rates (varying from 117.7 to 4116.6 t/km2y) are much higher than the chemical weathering rates (varying from 3.54 to 6.76 t/km2y) in the MLP because of the loose structure of loess and poor vegetation in the basin. In the future, studies on comparison of water geochemistry in different seasons and on influence of different types of land use and soil salinization on water geochemistry, denudation rates, and water quality should be strengthened in the MLP. These results shed some lights on processes responsible for modern loess weathering and also indicate the importance of time‐series sampling strategy for river water chemistry. Copyright © 2016 John Wiley & Sons, Ltd.

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Characteristics of carbonate, evaporite and silicate weathering in Huanghe River basin: A comparison among the upstream, midstream and downstream

Cited by 112 publications

References 37 publications

Spatio-Temporal Variation and Controlling Factors of Water Quality in Yongding River Replenished by Reclaimed Water in Beijing, North China

Spatio-Temporal Variation and Controlling Factors of Water Quality in Yongding River Replenished by Reclaimed Water in Beijing, North China

Geochemistry of the dissolved loads during high-flow season of rivers in the southeastern coastal region of China: anthropogenic impact on chemical weathering and carbon sequestration

Spatial characteristics and controlling factors of chemical weathering of loess in the dry season in the middle Loess Plateau, China

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