PDF(3893 KB)
青弋江流域河流水化学与岩石风化过程
黄鑫, 靳孟贵, 梁杏, 马斌, 张结, 曹明达, 张志鑫, 苏晶文
PDF(3893 KB)
PDF(3893 KB)
青弋江流域河流水化学与岩石风化过程
Riverine Water Chemistry and Rock Weathering Processes of Qingyi River Basin
,
,
为研究中国东部亚热带流域的岩石风化特征，以长江下游青弋江流域为研究区，通过测定青弋江干支流河水及雨水的主要离子浓度，结合水化学和正演模型识别流域岩石风化特征并估算其岩石风化速率和对大气CO2消耗速率.结果表明：流域岩石风化受人为活动影响小，岩石风化以碳酸参与风化为主，硫酸与硝酸的作用可忽略.流域河水阳离子主要来源为碳酸盐岩风化（占59.2%），其次为硅酸盐岩（17.9%）.大气降水和蒸发岩的贡献较低，分别占9.6%和5.6%.碳酸盐岩和硅酸盐岩风化速率均为上游山区支流‒徽水（32.04 t·km‒2·a‒1和20.97 t·km‒2·a‒1）>青弋江干流（24.12 t·km‒2·a‒1和8.91 t·km‒2·a‒1）>下游平原支流‒漳河（13.68 t·km‒2·a‒1和2.85 t·km‒2·a‒1）；CO2消耗速率为徽水（5.86×105 mol·km‒2·a‒1和3.29×105 mol·km‒2·a‒1）>青弋江（2.45×105 mol·km‒2·a‒1和2.43×105 mol·km‒2·a‒1）>漳河（0.77×105 mol·km‒2·a‒1和1.39×105 mol·km‒2·a‒1）.青弋江流域的岩石风化以碳酸风化碳酸盐岩为主，其风化速率略低于我国东部的其他亚热带硅酸盐岩分布区.青弋江流域的化学风化速率在空间上有所差异，上游山区的硅酸盐岩风化为全流域贡献了更多碳汇，对区域碳循环过程具有重要意义.
To investigate the rock weathering processes in subtropical basin in east China, we analyzed major ion compositions of rivers and precipitation samples in the Qingyi River Basin in the lower reach of the Yangtze River. In this study, the characteristics of weathering processes in the Qingyi River Basin were identified, and the rock weathering rates and consumption rates of atmospheric CO2 were estimated based on water chemistry and the forward model. The results show that the anthropogenic influences on rock weathering were not significant, which means the rock weathering in the study area was mainly induced by carbonic acid while the influence of sulfuric acid and nitric acid could be neglected. The cations of rivers were mainly contributed by weathering of carbonates (59.2%), followed by weathering of silicates (17.9%). Atmospheric precipitation and evaporites contributed 9.6% and 5.6%, respectively. Spatially, the carbonate weathering rates and silicate weathering rates decreased in the order of tributary Huishui River in the upstream mountainous areas (32.04 t·km‒2·a‒1 and 20.97 t·km‒2·a‒1)>main stream of Qingyi River (24.12 t·km‒2·a‒1 and 8.91 t·km‒2·a‒1)>tributary Zhanghe River in the downstream areas (13.68 t·km‒2·a‒1 and 2.85 t·km‒2·a‒1). Similarly, the CO2 consumption rates from carbonates weathering and silicate weathering were in the order of tributary Huishui River (5.86×105 mol·km‒2·a‒1 and 3.29×105 mol·km‒2·a‒1)>main stream of Qingyi River (2.45×105 mol·km‒2·a‒1 and 2.43×105 mol·km‒2·a‒1)>tributary Zhanghe River (0.77×105 mol·km‒2·a‒1 and 1.39×105 mol·km‒2·a‒1). In conclusion, carbonate weathering induced by carbonic acid was dominant in the Qingyi River Basin, with chemical weathering rates slightly lower than those of similar silicate-dominated subtropical areas in east China. The rock weathering rates in the study area differed spatially. In particular, silicate weathering in upstream mountainous areas accounted for more carbon sink of the whole Qingyi River Basin, which is of great importance for the regional carbon cycle.
亚热带 / 青弋江流域 / 岩石风化 / CO2消耗 / 碳汇 / 水文地质.
subtropical / Qingyi River Basin / rock weathering / atmospheric CO2 consumption / carbon sink / hydrogeology
P641.3
|
An, Y.L., Lü, J.M., Luo, J., et al., 2018. Chemical Weathering and CO2 Consumption of Chishuihe River Basin, Guizhou Province. Advances in Earth Science, 33(2): 179-188 (in Chinese with English abstract).
|
|
Bai, L.H., Shi, W.Z., Zhang, X.M., et al., 2021. Characteristics of Permian Marine Shale and Its Sedimentary Environment in Xuanjing Area, South Anhui Province, Lower Yangtze Area. Earth Science, 46(6): 2204-2217 (in Chinese with English abstract).
|
|
Dupré, B., Dessert, C., Oliva, P., et al., 2003. Rivers, Chemical Weathering and Earth’s Climate. Comptes Rendus-Geoscience, 335(16): 1141-1160. https://doi.org/10.1016/j.crte.2003.09.015
|
|
Gaillardet, J., Dupré, B., Louvat, P., et al., 1999. Global Silicate Weathering and CO2 Consumption Rates Deduced from the Chemistry of Large Rivers. Chemical Geology, 159(1-4): 3-30. https://doi.org/10.1016/S0009-2541(99)00031-5
|
|
Galy, A., France-Lanord, C., 1999. Weathering Processes in the Ganges-Brahmaputra Basin and the Riverine Alkalinity Budget. Chemical Geology, 159(1-4): 31-60. https://doi.org/10.1016/S0009-2541(99)00033-9
|
|
Gibbs, R. J., 1970. Mechanisms Controlling World Water Chemistry. Science, 170(3962): 1088-1090.10.1126/science.170.3962.1088
|
|
Hu, C.S., Tian, J.M., He, C.B., et al., 2021. Development Causes of the Qingyijiang River on the Northern Piedmont of the Huangshan Mountain and Its Relationship with the Channelization of the Yangtze River. Scientia Geographica Sinica, 41(10): 1862-1872 (in Chinese with English abstract).
|
|
Huang, X., Jin, M. G., Ma, B., et al., 2022. Identifying Nitrate Sources and Transformation in Groundwater in a Large Subtropical Basin under a Framework of Groundwater Flow Systems. Journal of Hydrology, 610:127943. https://doi.org/10.1016/j.jhydrol.2022.127943
|
|
Huang, X. W., 2019. Study on the Sources and Transformation of Sulfate and Its Environmental Significance in Northern Mount Huangshan Watershed (Dissertation). Anhui University of Technology, Ma’anshan (in Chinese with English abstract).
|
|
Larssen, T., Seip, H. M., Semb, A., et al., 1999. Acid Deposition and Its Effects in China: An Overview. Environmental Science & Policy, 2(1): 9-24. https://doi.org/10.1016/S1462-9011(98)00043-4
|
|
Li, S. L., Chetelat, B., Yue, F. J., et al., 2014. Chemical Weathering Processes in the Yalong River Draining the Eastern Tibetan Plateau, China. Journal of Asian Earth Sciences, 88: 74-84. https://doi.org/10.1016/j.jseaes.2014.03.011
|
|
Li, S. Y., Bush, R. T., 2015. Changing Fluxes of Carbon and Other Solutes from the Mekong River. Scientific Reports, 5: 16005. https://doi.org/10.1038/srep16005
|
|
Liu, B.J., Zhao, Z.Q., Li, S.L., et al., 2013. Characteristics of Silicate Rock Weathering in Cold Temperate Zone: A Case Study of Nenjiang River, China. Chinese Journal of Ecology, 32(4): 1006-1016 (in Chinese with English abstract).
|
|
Liu, W. J., Shi, C., Xu, Z. F., et al., 2016. Water Geochemistry of the Qiantangjiang River, East China: Chemical Weathering and CO2 Consumption in a Basin Affected by Severe Acid Deposition. Journal of Asian Earth Sciences, 127(3): 246-256. https://doi.org/10.1016/j.jseaes.2016.06.010
|
|
Lü, J. M., 2018. The Hydrochemical Characteristics and Source-Sink Effects for Atmospheric CO2 of Small Karst River under the Influence of Anthropogenic Activities (Dissertation). Guizhou University, Guiyang (in Chinese with English abstract).
|
|
Meybeck, M., 2003. 5.08-Global Occurrence of Major Elements in Rivers.Treatise on Geochemistry, 5(1): 207-223. https://doi.org/10.1016/B0-08-043751-6/05164-1
|
|
Millot, R., Gaillardet, J. É., Dupré, B., et al., 2003. Northern Latitude Chemical Weathering Rates: Clues from the Mackenzie River Basin, Canada. Geochimica et Cosmochimica Acta, 67(7): 1305-1329. https://doi.org/10.1016/S0016-7037(02)01207-3
|
|
Moon, S., Huh, Y., Qin, J. H., et al., 2007. Chemical Weathering in the Hong (Red) River Basin: Rates of Silicate Weathering and Their Controlling Factors. Geochimica et Cosmochimica Acta, 71(6): 1411-1430. https://doi.org/10.1016/j.gca.2006.12.004
|
|
Perrin, A. S., Probst, A., Probst, J. L., 2008. Impact of Nitrogenous Fertilizers on Carbonate Dissolution in Small Agricultural Catchments: Implications for Weathering CO2 Uptake at Regional and Global Scales. Geochimica et Cosmochimica Acta, 72(13): 3105-3123. https://doi.org/10.1016/j.gca.2008.04.011
|
|
Qin, X.Q., Jiang, Z.C., Zhang, L.K., et al., 2015. The Difference of the Weathering Rate between Carbonate Rocks and Silicate Rocks and Its Effects on the Atmospheric CO2 Consumption in the Pearl River Basin. Geological Bulletin of China, 34(9): 1749-1757 (in Chinese with English abstract).
|
|
Qiu, X.L., Wang, B.L., Liang, C.S., et al., 2019. Impacts of Damming on Riverine Water Chemistry and Chemical Weathering Rate Estimation in Basins—A Case Study from the Sancha River and the Maotiao River. Earth and Environment, 47(6): 768-776 (in Chinese with English abstract).
|
|
Roy, S., Gaillardet, J., Allègre, C. J., 1999. Geochemistry of Dissolved and Suspended Loads of the Seine River, France: Anthropogenic Impact, Carbonate and Silicate Weathering. Geochimica et Cosmochimica Acta, 63(9): 1277-1292. https://doi.org/10.1016/S0016-7037(99)00099-X
|
|
Shi, C.E., Deng, X.L., Yang, Y.J., et al., 2015. The Trend of Precipitation Acidity in Anhui Province from 1992 to 2013 and Its Possible Reasons. Journal of Nanjing University (Natural Sciences), 51(3): 508-516 (in Chinese with English abstract).
|
|
Shi, C.E., Qiu, M.Y., Zhang, A.M., et al., 2010. Spatiotemporal Trends and the Impact Factors of Acid Rain in Anhui Province. Environmental Science, 31(6): 1675-1681 (in Chinese with English abstract).
|
|
Suchet, P. A., Probst, J. L., 2017. A Global Model for Present-Day Atmospheric/Soil CO2 Consumption by Chemical Erosion of Continental Rocks (GEM-CO2). Tellus B: Chemical & Physical Meteorology, 47(1-2): 273-280. https://doi.org/10.3402/tellusb.v47i1-2.16047
|
|
Tao, Z.H., Zhao, Z.Q., Zhang, D., et al., 2015. Chemical Weathering in the Three Rivers (Jinshajiang, Lancangjiang, and Nujiang) Watershed, Southwest China. Chinese Journal of Ecology, 34(8): 2297-2308 (in Chinese with English abstract).
|
|
Ulloa-Cedamanos, F., Probst, A., Moussa, I., et al., 2021. Chemical Weathering and CO2 Consumption in a Multi-Lithological Karstic Critical Zone: Long Term Hydrochemical Trends and Isotopic Survey. Chemical Geology, 585: 120567. https://doi.org/10.1016/j.chemgeo.2021.120567
|
|
Wang, Y.X., Ma, T., 2022. How do Natural Processes and Human Activities Affect River Basin Water Resources? Earth Science, 47(10): 3813-3814 (in Chinese with English abstract).
|
|
Wu, Z.Z., Geng, T.Z., Wu, Z.W., et al., 2021. Water Quality Evaluation and Spatiotemporal Variation Characteristics of Qingyi River Basin. Journal of Anhui Agricultural Sciences, 49(18): 79-83, 86 (in Chinese with English abstract).
|
|
Xu, S., Li, S. L., Su, J., et al., 2021. Oxidation of Pyrite and Reducing Nitrogen Fertilizer Enhanced the Carbon Cycle by Driving Terrestrial Chemical Weathering. Science of the Total Environment, 768:144343. https://doi.org/10.1016/j.scitotenv.2020.144343
|
|
Xu, Z. F., Liu, C. Q., 2010. Water Geochemistry of the Xijiang Basin Rivers, South China: Chemical Weathering and CO2 Consumption. Applied Geochemistry, 25(10): 1603-1614. https://doi.org/10.1016/j.apgeochem.2010.08.012
|
|
Xue, D.M., Botte, J., De Baets, B., et al., 2009. Present Limitations and Future Prospects of Stable Isotope Methods for Nitrate Source Identification in Surface- and Groundwater. Water Research, 43(5): 1159-1170. https://doi.org/10.1016/j.watres.2008.12.048
|
|
Yang, Q.Q., Xu, G.L., Zhang, P., et al., 2022. Macroinvertebrate Community Structure and Water Quality Assessment in the Qingyi River Watershed. Acta Ecologica Sinica, 42(10): 4169-4180 (in Chinese with English abstract).
|
|
Yu, C., Xu, Z.F., Liu, W.J., et al., 2017. River Water Geochemistry of Hanjiang River, Implications for Silicate Weathering and Sulfuric Acid Participation. Earth and Environment, 45(4): 390-398 (in Chinese with English abstract).
|
|
Zhang, C., 2018. Sedimentary Characteristics, Developmental Models and Distribution Regularities of the Triassic Spontaneous in Lower Yangtze Region of Anhui Province (Dissertation). Nanjing University, Nanjing (in Chinese with English abstract).
|
|
Zhang, D., Qin, Y., Zhao, Z.Q., 2015. Chemical Weathering of Carbonate Rocks by Sulfuric Acid on Small Basin in North China. Acta Scientiae Circumstantiae, 35(11): 3568-3578 (in Chinese with English abstract).
|
|
Zhang, J., Cao, M. D., Jin, M. G., et al., 2022. Identifying the Source and Transformation of Riverine Nitrates in a Karst Watershed, North China: Comprehensive Use of Major Ions, Multiple Isotopes and a Bayesian Model. Journal of Contaminant Hydrology, 246: 103957. https://doi.org/10.1016/j.jconhyd.2022.103957
|
|
Zhang, L. X., 2019. Study on Surface Water Quality Characteristics and Water Quality Evaluation of Typical Watershed in Wanjiang Economic Belt (Dissertation). Hefei University of Technology, Hefei (in Chinese with English abstract).
|
|
Zhang, S. R., Bai, X. Y., Zhao, C. W., et al., 2021. Global CO2 Consumption by Silicate Rock Chemical Weathering: Its Past and Future. Earth’s Future, 9(5): 1-20. https://doi.org/10.1029/2020ef001938
|
/
| 〈 |
|
〉 |
AI Summary
