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农业活动对岩溶作用碳汇的影响:以重庆青木关地下河流域为例

DOI: 10.11867/j.issn.1001-8166.2012.04.0466, PP. 466-476

Keywords: 农业活动,碳酸盐岩溶蚀,碳酸,硝酸,硫酸,δ13C-DIC,净碳汇

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Abstract:

以受农业活动影响强烈的重庆青木关地下河流域为研究对象,利用CTDP300多参数水质自动记录仪、WGZ-1型光电数字水位计、HOBO小型气象站在线自动监测电导率、水位以及降雨等数据,并获取流域耕地面积数据,于2010年分月采集地下水样,分析常规水化学和地下水溶解无机碳δ13C,初步探讨流域农业活动对岩溶作用过程和碳汇的影响,发现农业活动对岩溶作用过程产生明显的影响,进而影响到岩溶地质碳汇。地下水水化学以及地下水δ13C-DIC值证实了流域地下水DIC是碳酸、硝酸和硫酸共同溶蚀碳酸盐岩的产物;每月碳酸溶蚀碳酸盐岩产生DIC占地下水中总DIC的比例在55.53%~81.25%之间,雨季(62.98%)普遍低于旱季(74.86%);碳酸溶蚀碳酸盐岩产生的DIC的量为14.67×106mol/a,其中岩溶作用产生的净CO2汇量为7.335×106mol/a,而硝酸和硫酸溶蚀碳酸盐岩产生的DIC总量为7.48×106mol/a,约占地下水中总DIC的33.8%,单位面积耕地上硝酸和硫酸溶蚀碳酸盐岩产生DIC的强度为1.89×106mol/(km2·a)。人类活动引入的硝酸和硫酸参与碳酸盐岩的溶解并改变了区域碳循环。

References

[1]  Barnes R T,Raymond P A. The contribution of agriculture and urban activities to inorganic carbon fluxes within temperate watersheds[J]. Chemical Geology, 2009,266(3/4):327-336.
[2]  Baker A,Cumberland S,Hudson N.Dissolved and total organic and inorganic carbon in some British rivers[J].Area,2008,40(1):117-127.
[3]  Spence J,Telmer K.The role of sulfur in chemical weathering and atmospheric CO2 fluxes:Evidence from major ions, δ13C-DIC, and δ34S-SO4 in rivers of the Canadian Cordillera[J].Geochimica et Cosmochimica Acta,2005,69:5 441-5 485.
[4]  Lerman A,Wu L.CO2 and sulfuric acid controls of weathering and river water composition[J].Journal of Geochemical Exploration,2006,88(1/3):427-430.[17]Lerman A,Wu L, Mackerzie F T. CO2 and H2SO4 consumption in weathering and material transport to the ocean,and their role in the global carbon balance[J].Marine Chemistry,2007,106:326-350.
[5]  Li S L, Calmels D, Han G, et al.Sulfuric acid as an agent of carbonate weathering constrained by δ13C-DIC:Examples from Southweat China[J].Earth and Planetray Science Letters,2008,270:189-199.
[6]  Liu Congqiang, Jiang Yingkui,Tao Faxiang, et al.Chemicalweathering of carbonate rocks by sulfuric acid and the carbon cycling in Southwest China[J].Geochimica, 2008,37(4): 404-414.[刘丛强,蒋颖魁,陶发祥,等. 西南喀斯特流域碳酸盐岩的硫酸侵蚀与碳循环[J]. 地球化学, 2008,37(4): 404-414.]
[7]  Liu Zaihua, Dreybrodt W, Han Jun,et al.Equilibrium chemistry of the CaCO3-CO2-H2O system and discussions[J]. Carsologica Sinica, 2005,24(1):1-14.[刘再华,Dreybrodt W,韩军,等. CaCO3-CO2-H2O岩溶系统的平衡化学及其分析[J].中国岩溶,2005,24(1):1-14.]
[8]  Liu Zaihua, Chris Groves, Yuan Daoxian,et al. Study on the hydrochemical variations caused by the water-rock-gas interaction—An example from the Guilin Karst experimental site[J]. Hydrogeology & Engineering Geology, 2003,30(4):13-18.[刘再华,Chris Groves,袁道先,等.水—岩—气相互作用引起的水化学动态变化研究——以桂林岩溶试验场为例[J].水文地质工程地质,2003,30(4):13-18.]
[9]  Liu Zaihua,Li Qiang,Wang Jinliang, et al. Interpretation of borehole storm-scale and vertical hydrochemical variations at the Guilin Karst experimental site[J].Carsologica Sinica, 2004,23(3): 169-176.[刘再华,李强,汪进良,等.桂林岩溶试验场钻孔水化学暴雨动态和垂向变化解译[J].中国岩溶,2004,23(3): 169-176.]
[10]  Liu Zaihua,Li Qiang,Sun Hailong,et al. Seasonal,diurnal and storm-scale hydrochemical variations of typical epikarst springs in subtropical karst areas of SW China:Soil CO2 and dilution effects [J].Journal Hydrology,2007,337(1/2):207-223.
[11]  Yuan Wenhao,He Qiufang,Yang Pingheng,et al. Hydrochemistry and its influencing factors in typical karst valleys—A case study of Qingmuguan underground water system in Chongqing[J]. Journal of Southwest University (Natural Science Edition), 2009,31(6):160-164.[袁文昊,贺秋芳,杨平恒,等. 典型岩溶槽谷地下河水化学时空变化特征及影响因素初探——以重庆青木关地下河系统为例[J].西南大学学报:自然科学版,2009,31(6):160-164.]
[12]  Yuan D.The carbon cycle in karst[J].Zeitschrift fur Geomorphologie Neue Folge,1997, 108(Suppl.):91-102.
[13]  Liu Zaihua. Two important atmospheric CO2 sinks[J]. China Science Bulletin, 2000, 45(21): 2 348-2 351.[刘再华.大气CO2两个重要的汇[J].科学通报,2001,45(21):2 348-2 351.]
[14]  Jiang Z C,Yuan D X. CO2 source-sink in karst processes in karst areas of China[J]. Episodes,1999,22(1): 33-35.
[15]  Xu Shengyou,Jiang Zhongcheng. Preliminary estimate the relationship between Karstification and CO2 source & sink[J]. China Science Bulletin, 1997, 42(9):953-956.[徐胜友,蒋忠诚.我国岩溶作用与大气温室气体CO2源汇关系的初步估算[J].科学通报,1997, 42(9):953-956.]
[16]  Liu Zaihua.Contribution of Carbonate rock weathering to the atmospheric CO2 sink[J]. Carsologica Sinica, 2000,19(4):294-300.[刘再华.碳酸盐岩岩溶作用对大气CO2沉降的贡献[J].中国岩溶,2000,19(4):294-300.]
[17]  Etchanchu D, Probst J L. Evolution of the chemical composition of the Garonne river during the period 1971-1984[J].Hydrological Sciences Journal,1988,33(3):243-256.
[18]  Semhi K,Amiotte Suchet P,Clauer N, et al.Impact of nitrogen fertilizers on the natural weathering-erosion processes and fluvial transport in the Garonne basin[J].Applied Geochemistry,2000, 15(6):865-874.
[19]  West T Q,McBride A C. The contribution of agriculture lime to carbon dioxide emissions in the Unite States: Dissolution, transport, and net emissions[J]. Agriculture, Ecosystems and Environment, 2005,108(2):145-154.
[20]  Oh N H,Raymond P A. The contribution of agricultural liming to riverine bicarbonate export and CO2 sequestration in the Ohio River basin[J].Global Biogeochemical Cycle,2006,20(3):GB3012,doi:10.1029/2005GB002565.
[21]  Ray mond P A,Oh N H,Turner R E, et al. Anthropogenically enhanced fluxes of water and carbon from the Mississippi River[J].Nature,2008,451(7 177):449-452.
[22]  Perrin A S,Probst A,Probst J L.Impact of nitrogenous fertilizers on carbonate dissolution in small agricultural catchments: Implications for weathering CO2 uptake at regional and global scales[J].Geochimica et Cosmochimica Acta,2008,72:3 105-3 123.
[23]  Li S L,Liu C Q, Li J,et al.Geochemistry of dissolved inorganic carbon and carbonate weathering in a small typical karstic catchment of Southwest China:Isotopic and chemical constraints[J].Chemical Geology,2010,77:301-309.
[24]  Wang Zhijun,Yang Pingheng,Kuang Yinglun, et al.Temporal and spatial variations of the nitrate-nitrogen sources in an underground river using 15N isotope technique[J]. Environmental Science,2009,30(12):3 548-3 554.[汪智军,杨平恒,旷颖仑,等. 基于15N同位素示踪技术的地下河硝态氮来源时空变化特征分析[J].环境科学,2009,30(12):3 548-3 554.]
[25]  Laure Gandois,Anne-Sophie Perrin,Anne Probst.Impact of nitrogenous fertiliser-induced proton release on cultivated soils with contrasting carbonate contents: A column experiment[J]. Geochimica et Cosmochimica Acta,2011,75(5):1 185-1 198.
[26]  Deines P, Langmuir D,Harmon R S. Stable carbon isotope ratios and the existence of a gas phase in the evolution of carbonate waters[J]. Geochimica et Cosmochimica Acta, 1974, 38(7): 1 147-1 164.
[27]  Clark I, Fritz P. Environmental Isotopes in Hydrogeology[M]. Lewis Press:Boca Raton,1997.
[28]  Deines P. Carbon isotope effects in carbonate systems[J]. Geochimica et Cosmochimica Acta, 2004,68(12): 2 659-2 679.

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