Chemical weathering under mid- to cool temperate and monsoon-controlled climate: A study on water geochemistry of the Songhuajiang River system, northeast China

Liu, Baojian; Liu, Cong‐Qiang; Zhang, Gan; Li, Siliang; Hu, Jian; Ding, Hu; Lang, Yunchao; Li, Xiaodong

doi:10.1016/j.apgeochem.2013.01.015

Cited by 40 publications

(21 citation statements)

References 58 publications

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“…The Ca 2+ /Mg 2+ (Figure 10a) of most samples was less than 1, which indicated the effects of dissolution of calcite and magnesium minerals, or cation exchange reaction causing calcium reduction; only one sample (YD05) has a value slightly greater than 2; the other samples were greater than 1 but less than 2, indicating the dissolution of calcite [22]. The Ca 2+ +Mg 2+ vs. Cation (Figure 10b) of samples were located above the equilibrium line, indicating that the dissolution of carbonate and calcite is the main source [24,25]. Na + +K + vs. Cl − (Figure 10c) of most waters were located below the equilibrium line, indicating that sodium and potassium ions were also affected by dissolution of salt rocks [45].…”

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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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: 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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“…The ratio of (Ca 2+ +Mg 2+ )/Na + for the silicate end-member was 0.61 ± 0.13, which is close to the silicate end-member for the world's rivers ((Ca 2+ +Mg 2+ )/Na + = 0.59±0.17, Gaillardet et al, 1999). Moreover, previous research has documented the chemical composition of rivers, such as the Amur and the Songhuajiang in northern China, the Xishui in the lower reaches of the Changjiang, and major rivers in South Korea (Moon et al, 2009;Liu et al, 2013;Wu et al, 2013;Ryu et al, 2008;Shin et al, 2011). These river basins have similar lithological settings to the study area, so we could further validate the composition of the silicate end-member with their results.…”

Section: Chemical Weathering Inputsmentioning

confidence: 98%

“…Based on the above assumption, a forward model is employed to quantify the relative contribution of the different sources to the rivers of the SECRB in this study (e.g., Galy and France-Lanord, 1999;Moon et al, 2007;Liu, 2007, 2010;Liu et al, 2013). The calculated contributions of different reservoirs to the total cationic load for major rivers and their main tributaries in the SECRB are presented in Fig.…”

Section: Chemical Weathering Rate In the Secrbmentioning

confidence: 99%

“…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: 99%

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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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“…Chloride is the most useful reference to evaluate atmospheric inputs to rivers in many studies because it is conservative and is not involved in biogeochemical cycling (Gaillardet et al 1997;Viers et al 2001;Liu et al 2013). The concentration of Cl -in river water is assumed to be entirely derived from the atmosphere; the contribution of evaporites is negligible (Negrel et al 1993).…”

Section: Atmospheric Inputmentioning

confidence: 99%

Chemical weathering and CO2 consumption of a high-erosion-rate karstic river: a case study of the Sanchahe River, southwest China

Hou

et al. 2015

Chin. J. Geochem.

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The Sanchahe River in southwest China is a tributary of the Wujiang River and experiences high erosion rates. Geochemical analysis was conducted on Sanchahe River basin samples collected in the wet and dry seasons of 2014 in order to better understand local chemical weathering processes, anthropogenic influences, and associated CO 2 consumption. The samples' total dissolved solid concentrations were found to be significantly higher than that of the global river average. Ca 2? was the dominant cation in the samples and accounted for 64 % and 73 % of the total cations in the dry and wet seasons, respectively. HCO 3 -and SO 4 2-were the dominant anions, accounting for 92 % of the total anions. Stoichiometry analyses of the river waters suggested that the water chemistry is controlled by carbonate dissolution by both carbonic and sulfuric acid. The chemical weathering rates of carbonate and silicate evaporites in the Sanchahe River basin were estimated to be approximately 109.2 and 11.0 t/ (km 2 a), respectively, much higher than both the global mean values and the Wujiang River, a typical karstic river. The CO 2 consumption by carbonate and silicate weathering are estimated to be 597.4 9 10 3 and 325.5 9 10 3 mol/ (km 2 a), which are much higher than corresponding values in the Wujiang River, indicating a high erosion rate in the Sanchahe River basin.

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Chemical weathering under mid- to cool temperate and monsoon-controlled climate: A study on water geochemistry of the Songhuajiang River system, northeast China

Cited by 40 publications

References 58 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

Chemical weathering and CO2 consumption of a high-erosion-rate karstic river: a case study of the Sanchahe River, southwest China

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