Research on Carbon Source Effect of Guangxi Typical Carbonate Rock Area by Acid Rain

Abstract:

In order to have an insight into the reaction between acid rain and carbonate rock surface, and figure out the CO₂ carbonate source amount from the acid rain chemical weathering process of the carbonate rocks, two typical carbonate rock areas Guilin (represents limestone area) and Liuzhou (represents dolomite area) were chosen as the study areas in Guangxi. According to the dissolution rate calculated by the limestone test piece and GIS analysis, the CO₂ source produced by the acid rain was 41.066×10⁸g/a, in which Guilin was 33.349×108g/a and Liuzhou was 7.717×10⁸g/a. The carbon sources of unit area in Guilin and in Liuzhou were 66.967×10⁵g/a•km2 and 42.777×10⁵g/a•km2 respectively. Although the carbon sources were still less than their carbon sinks in Guilin and Liuzhou which were 273.891×105g/a•km2 and 43.660×105g/a•km2 respectively, they should not be neglected. There were two reasons that the degassing rate of carbon source in Guilin was slower than that in Liuzhou. One was the representative area of carbonate rock in Guilin were 2.77 times of that in Liuzhou, the other one was that the total intensity of acid rain of Guilin was lower than Liuzhou, so that the dissolution rate of the carbonate rocks was lower in Guilin.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 314-321
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.314
• Online since: February 2013
• Authors: Shi Yu, Hui Yang
• Keywords: Acid Rain, Carbon Source, Carbonate Rock

References

[1] GaillardetJ, MillotR, DupréB. Chemical denudation rates of the western Canadian orogenic belt: The Stikine terrane[J]. Chemical Geology, 2003, 201: 257-279.

DOI: 10.1016/j.chemgeo.2003.07.001

[2] MillotR, GaillardetJ, DupréB. Northern latitude chemical weathering rate: Clues from the Mackenzie River Basin, Canada[J]. GeochimicaetCosmochimicaActa, 2003, 67: 1305-1329.

DOI: 10.1016/s0016-7037(02)01207-3

[3] ZaihuaLiu. Two Important Sink ofAtmospheric CO2[J]. Chinese Science Bulletin, 2000, 45(21): 2348-2351. (In Chinese).

[4] Zaihua Liu. Contribution of Carbonate Rock Weathering to the Atomspheric CO2Sink[J]. CarsologicaSinica. 2000, 19(4): 294-299. (In Chinese).

[5] DaoxianYuan. Carbon Cyclein Earth Systemandits Effectson Environmentand Resources [J]. Quaternary Sciences, 2001, 21(3): 224-232. (In Chinese).

[6] DongshengQiu, DafangZhuang, YunfengHu, et al. Estimation of Carbon Sink Capacity Caused by Rock Weathering in China[J]. Earth Science-Journal of China University of Geosciences, 2004, 29(2): 177-183. (In Chinese).

[7] LiuZH, Wolfgang D, WangHJ. A possible important CO2 sink by the global water cycle[J]. Chinese Science Bulletin, 2008, 53(3): 402-407.

DOI: 10.1007/s11434-008-0096-9

[8] LiuZH, Wolfgang D, WangHJ. A new direction in effective accounting for the atmospheric CO2 budget: Considering the combined action of carbonate dissolution, the global water cycle and photosynthetic uptake of DIC by aquatic organisms[J]. Earth-Science Reviews, 2010, 99: 162-172.

DOI: 10.1016/j.earscirev.2010.03.001

[9] BernerE K, Berner RA. The global water cycle: Ceochemistry and Environment[M]. Englewood Cliffs, Prentice Hall, 1987: 397.

[10] Spence J, Telmer K. The role of sulfur in chemical weathering and atmospheric CO2fluxes : evidence from major ions, δ13CDIC, and δ34SO42- in rivers of the Canadian Cordillera[J]. GeochimicaetCosmochimicaActa, 2005, 69: 4441-4581.

DOI: 10.1016/j.gca.2005.07.011

[11] ZhongchengJiang, XiaozhenJiang, MingtangLei. Estimation of Atmospheric CO2 Sink of Karst Areasin Chinabasedon GIS and Limestone Tablet Loss Data [J]. CARSOLOGICA SINICA, 2000, (03): 212-217. (In Chinese).