【引用本文】 蓝高勇, 汪智军, 殷建军, 等. 岩溶泉补给地表溪流二氧化碳脱气作用研究[J]. 岩矿测试, 2021, 40(5): 720-730. doi: 10.15898/j.cnki.11-2131/td.202107310088
LAN Gao-yong , WANG Zhi-jun , YIN Jian-jun , et al. Study on Carbon Dioxide Outgassing in a Karst Spring-fed Surface Stream[J]. Rock and Mineral Analysis, 2021, 40(5): 720-730. doi: 10.15898/j.cnki.11-2131/td.202107310088

岩溶泉补给地表溪流二氧化碳脱气作用研究

中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 广西 桂林 541004

收稿日期: 2021-06-23  修回日期: 2021-07-31 

基金项目: 国家自然科学基金项目(41807426);广西自然科学基金项目(2018GXNSFAA138097;2018GXNSFBA050004;2018GXNSFAA281320;2020GXNSFAA159066);广西重大科技创新基地建设项目(2018-242-Z01)

通信作者: 汪智军,博士,助理研究员,从事岩溶环境与全球变化研究。E-mail:zhijun_wang@foxmail.com。

Study on Carbon Dioxide Outgassing in a Karst Spring-fed Surface Stream

Key Laboratory of Karst Dynamics, Ministry of Natural Resources & Guangxi;Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China

Corresponding author: WANG Zhi-jun , zhijun_wang@foxmail.com

Received Date: 2021-06-23
Revised Date: 2021-07-31

摘要:碳酸盐岩风化作用(即岩溶作用)能够吸收大气二氧化碳(CO2),形成溶解无机碳(DIC,dissolved inorganic carbon),被认为是一种重要的陆地碳汇,其在全球碳收支平衡和未来陆地增汇中可能会有重要贡献。然而,目前对岩溶碳汇的稳定性还存在争议,一些学者认为岩溶地下水出露地表后会发生CO2脱气,对岩溶碳汇通量估算带来不确定性。本文以广西桂林长流水表层岩溶泉补给的溪流(约2.7km长)为例,利用水化学和同位素质谱仪测试技术,研究了溪水水化学指标和溶解无机碳同位素(δ13CDIC)沿流程变化,探讨了溪流CO2脱气过程、通量及其影响因素,以更好地了解岩溶碳汇的稳定性。结果表明:从泉口向下游,在陡坡地段(C1~C14段,长约270m,坡度约10°),溪水pH值、方解石饱和指数和δ13CDIC沿流程分别升高了0.9、0.9和1.8‰,而CO2分压、电导率、Ca2+浓度和DIC浓度分别下降了85%、34μS/cm、0.2mmol/L和0.7mmol/L,说明溪水发生了显著的CO2脱气,并伴随碳酸钙沉淀。而在平缓地段(C18~C26段,长约2.1km,坡度<1°),溪水各水化学指标和δ13CDIC变化较小,指示CO2脱气作用较弱。这些发现表明溪流CO2脱气受到了地形决定的水动力条件控制。另外,在下游渠段,受支流汇入影响,溪水pH值和方解石饱和指数有所降低,在一定程度上抑制了CO2脱气。溪流CO2脱气能够抵消部分岩溶作用固定的大气CO2量,但是在长流水这一高地势、低流量且有碳酸钙沉积的环境下,其抵消的量也仅占29%。对于在低缓地区受流量很大的岩溶泉/地下河补给的河流,其CO2脱气作用对岩溶碳汇的影响有限,加之受可能增强的水生光合生物固碳效应影响,岩溶碳汇应具有很高的稳定性。

关键词: 岩溶作用, 水化学分析, 同位素质谱法, 二氧化碳脱气, 碳酸钙沉积, 岩溶碳汇

Study on Carbon Dioxide Outgassing in a Karst Spring-fed Surface Stream

KEY WORDS: carbonate weathering, hydrochemical analysis, isotope ratio mass spectrometry, carbonate precipitation, calcium carbonate deposition, karst-related carbon sink

本文参考文献

[1]

Gao Y, Yu G R, Yang T T, et al.New insight into global blue carbon estimation under human activity in land-sea interaction area:A case study of China[J].Earth-Science Reviews, 2016, 159:36-46.

[2]

Liu Z, Dreybrodt W, Wang H.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.

[3]

Gombert P.Role of karstic dissolution in global carbon cycle[J].Global and Planetary Change, 2002, 33(1):177-184.

[4]

刘再华, Dreybrodt W, 王海静.一种由全球水循环产生的可能重要的CO2汇[J].科学通报, 2007, 52(20):2418-2422.

Liu Z H, Dreybrodt W, Wang H J.A possible important CO2 sink by the global water cycle[J].Chinese Science Bulletin, 2007, 52(20):2418-2422.

[5]

Liu Z, Macpherson G L, Groves C, et al.Large and active CO2 uptake by coupled carbonate weathering[J].Earth-Science Reviews, 2018, 182:42-49.

[6]

Liu Z, Dreybrodt W.Significance of the carbon sink pro-duced by H2O-carbonate-CO2-aquatic phototroph interaction on land[J].Science Bulletin, 2015, 60(2):182-191.

[7]

Liu Z H, Dreybrodt W, Liu H.Atmospheric CO2 sink:Silicate weathering or carbonate weathering?[J].Applied Geochemistry, 2011, 26:292-294.

[8]

Liu Z, Li Q, Sun H, Wang J.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 of Hydrology, 2007, 337(1):207-223.

[9]

Wang Z, Yin J J, Pu J, et al.Integrated understanding of the critical zone processes in a subtropical karst watershed (Qingmuguan, southwestern China):Hydro-chemical and isotopic constraints[J].Science of The Total Environment, 2020, 749:141257.

[10]

Zeng S, Liu Z, Kaufmann G.Sensitivity of the global carbonate weathering carbon-sink flux to climate and land-use changes[J].Nature Communications, 2019, 10(1):5749.

[11]

曾思博, 蒋勇军.土地利用对岩溶作用碳汇的影响研究综述[J].中国岩溶, 2016, 36(2):153-163.

Zeng S B, Jiang Y J.Impact of land-use and land-cover change on the carbon sink produced by karst processes:A review[J].Carsologica Sinica, 2016, 36(2):153-163.

[12]

Curl R L.Carbon shifted but not sequestered[J]. Science, 2012, 335(6069):655.

[13]

Hoffer-French K J, Herman J S.Evaluation of hydrological and biological influences on CO2 fluxes from a karst stream[J].Journal of Hydrology, 1989, 108:189-212.

[14]

Wang Z, Yin J J, Pu J, et al.Flux and influencing factors of CO2 outgassing in a karst spring-fed creek:Implications for carbonate weathering-related carbon sink assessment[J].Journal of Hydrology, 2020, 596:125710.

[15]

周小萍, 沈立成, 王鹏, 等.表层岩溶地下水出露地表后的脱气作用--以重庆市南川区柏树湾表层岩溶泉溪流为例[J].中国岩溶, 2011, 30(4):1014-1021.

Zhou X P, Shen L C, Wang P, et al.Degasification of the outcropped epikarst water:A case study on the Baishuwan Spring in Nanchuan, Chongqing[J].Carsologica Sinica, 2013, 30(4):1014-1021.

[16]

周小萍, 蓝家程, 张笑微, 等.岩溶溪流的脱气作用及碳酸钙沉积--以重庆市南川区柏树湾泉溪流为例[J].沉积学报, 2013, 31(6):1014-1021.

Zhou X P, Lan J C, Zhang X W, et al.CO2 outgassing and precipitation of calcium carbonate in a karst stream:A case study of Baishuwan Spring in Nanchuan, Chongqing[J].Acta Sedimentologica Sinica, 2013, 31(6):1014-1021.

[17]

Drysdale R N, Taylor M P, Ihlenfeld C.Factors con-trolling the chemical evolution of travertine-depositing rivers of the Barkly karst, northern Australia[J].Hydrological Processes, 2002, 16(15):2941-2962.

[18]

陈波, 杨睿, 刘再华, 等.水生光合生物对茂兰拉桥泉及其下游水化学和δ13CDIC昼夜变化的影响[J].地球化学, 2014, 43(4):375-385.

Chen B, Yang R, Liu Z H, et al.Effects of aquatic phototrophs on diurnal hydrochemical and δ13CDIC variations in an epikarst spring and two spring-fed ponds of Laqiao, Maolan, SW China[J].Geochimica, 2014, 43(4):375-385.

[19]

Pu J, Li J, Khadka M B, et al.In-stream metabolism and atmospheric carbon sequestration in a groundwater-fed karst stream[J].Science of The Total Environment, 2017, 579:1343-1355.

[20]

李丽, 蒲俊兵, 李建鸿, 等.岩溶地下水补给的地表溪流溶解无机碳及其稳定同位素组成的时空变化[J].环境科学, 2017, 38(2):527-534.

Li L, Pu J B, Li J H, et al.Temporal and spatial variations of dissolved inorganic carbon and its stable isotopic composition in the surface stream of karst ground water recharge[J].Environmental Science, 2017, 38(2):527-534.

[21]

张陶, 李建鸿, 蒲俊兵, 等.桂江典型断面夏季水-气界面CO2交换的碳源与机制[J].第四纪研究, 2020, 40(4):1048-1057.

Zhang T, Li J H, Pu J B, et al.Sources and controlling mechanisms of CO2 exchange across water-air interface in summer in two typical transects of Guijiang River, China[J].Quaternary Sciences, 2020, 40(4):1048-1057.

[22]

Zhang T, Li J, Pu J, et al.Carbon dioxide exchanges and their controlling factors in Guijiang River, SW China[J].Journal of Hydrology, 2019, 578:124073.

[23]

唐伟, 王华, 蓝高勇, 等.Gas BenchⅡ-IRMS磷酸法在线测定水中溶解无机碳碳同位素分析条件及影响因素[J].中国岩溶, 2017, 36(3):419-426.

Tang W, Wang H, Lan G Y, et al.A study on the test conditions and influence factors in online-phosphoric acid method for carbon isotopes of dissolved inorganic carbon compounds in water samples by GasBenchⅡ-IRMS[J].Carsologica Sinica, 2017, 36(3):419-426.

[24]

黄芬, 吴夏, 杨慧, 等.桂林毛村地下河流域岩溶关键带碳循环研究[J].广西科学, 2018, 25(5):515-523.

Huang F, Wu X, Yang H, et al.Study on carbon cycle of karst critical zone in Maocun subterranean river basin of Guilin[J].Guangxi Sciences, 2018, 25(5):515-523.

[25]

Zeng C, Liu Z, Zhao M, et al.Hydrologically-driven variations in the karst-related carbon sink fluxes:Insights from high-resolution monitoring of three karst catchments in southwest China[J].Journal of Hydrology, 2016, 533:74-90.

[26]

吴夏, 朱晓燕, 张美良, 等.桂林岩溶表层带土壤CO2体积分数时空变化规律及其意义[J].生态环境学报, 2012, 21(5):834-839.

Wu X, Zhu X Y, Zhang M L, et al.Variation of soil CO2 concentration content and its significance in epikarst of Guilin[J].Ecology and Environmental Sciences, 2012, 21(5):834-839.

[27]

Dreybrodt W.Physics and chemistry of CO2 outgassing from a solution precipitating calcite to a speleothem:Implication to 13C, 18O, and clumped 13C18O isotope composition in DIC and calcite[J].Acta Carsologica, 2019, 48:59-68.

[28]

Runnells D D.Diagenesis, chemical sediments, and the mixing of natural waters[J].Journal of Sedimentary Research, 1969, 36:1188-1201.

[29]

Pei W, Hu Q, Hui Y, et al.Preliminary study on the utilization of Ca2+ and HCO-3 in karst water by different sources of Chlorella vulgaris[J].Carbonates and Evaporites, 2014, 29(2):203-210.

[30]

Clark I D, Fritz P.Environmental isotopes in hydrogeo-logy[M].New York:Lewis Publishers, 1997.

[31]

Shin W J, Chung G S, Lee D, et al.Dissolved inorganic carbon export from carbonate and silicate catchments estimated from carbonate chemistry and δ13CDIC[J].Hydrology and Earth System Sciences, 2011, 15(8):2551-2560.

[32]

Yan H, Liu Z, Sun H.Large degrees of carbon isotope dis-equilibrium during precipitation-associated degassing of CO2 in a mountain stream[J].Geochimica Et Cosmochimica Acta, 2020, 273:244-256.

[33]

Jiang Y, Hu Y, Schirmer M.Biogeochemical controls on daily cycling of hydrochemistry and δ13C of dissolved inorganic carbon in a karst spring-fed pool[J].Journal of Hydrology, 2013, 478:157-168.

[34]

蒲俊兵.重庆地区岩溶地下河水溶解无机碳及其稳定同位素特征[J].中国岩溶, 2013, 32(2):123-132.

Pu J B.Dissolved inorganic carbon and stable carbon isotope in karst subterranean streams in Chongqing, China[J].Carsologica Sinica, 2013, 32(2):123-132.

[35]

Liu Z, Svensson U, Dreybrodt W, et al.Hydrodynamic control of inorganic calcite precipitation in Huanglong Ravine, China:Field measurements and theoretical prediction of deposition rates[J].Geochimica Et Cosmochimica Acta, 1995, 59(15):3087-3097.

[36]

曾成, 刘再华, 孙海龙, 等.水力坡度对溪流钙华沉积的影响[J].地球与环境, 2009, 37(2):103-110.

Zeng C, Liu Z H, Sun H L, et al.Influence of hydraulic gradient on the travertine deposition in the Baishuitai Canal, Yunnan Province[J].Earth and Environment, 2009, 37(2):103-110.

[37]

赵海娟, 肖琼, 吴夏, 等.人类活动对漓江地表水体水-岩作用的影响[J].环境科学, 2017, 38(10):4108-4119.

Zhao H, Xiao Q, Wu X, et al.Impact of human activities on water-rock interactions in surface water of Lijiang River[J].Environmental Science, 2017, 38(10):4108-4119.

[38]

李建鸿, 蒲俊兵, 袁道先, 等.岩溶区地下水补给型水库表层无机碳时空变化特征及影响因素[J].环境科学, 2015, 36(8):2833-2842.

Li J H, Pu J B, Yuan D X, et al.Variations of inorganic carbon and its impact factors in surface-layer waters in a groundwater-fed reservoir in karst area, SW China[J].Environmental Science, 2015, 36(8):2833-2842.

[39]

Huang S, Pu J, Li J, et al.Sources, variations, and flux of settling particulate organic matter in a subtropical karst reservoir in southwest China[J].Journal of Hydrology, 2020, 586:124882.

[40]

Jiang Y, Lei J, Hu L, et al.Biogeochemical and physical controls on the evolution of dissolved inorganic carbon (DIC) and δ13CDIC in karst spring-waters exposed to atmospheric CO2(g):Insights from laboratory experiments[J].Journal of Hydrology, 2020, 583:124294.

[41]

宋昂, 彭文杰, 何若雪, 等.好氧不产氧光合细菌反馈作用下的五里峡水库坝前水体化学特征研究[J].岩矿测试, 2017, 36(2):171-179.

Song A, Peng W J, He R X, et al.Hydrochemistry characteristics in front of the Wulixia Reservoir dam associated with feedback from aerobic anoxygenic phototrophic bacteria[J].Rock and Mineral Analysis, 2017, 36(2):171-179.

[42]

李强, 黄雅丹, 何若雪, 等.岩溶水体惰性有机碳含量及其存在机理[J].岩矿测试, 2018, 37(5):475-478.

Li Q, Huang Y D, He R X, et al.The concentration of recalcitrant dissolved organic carbon in the karst hydrosphere and its existing mechanism[J].Rock and Mineral Analysis, 2018, 37(5):475-478.

[43]

Jiao N, Herndl G J, Hansell D A, et al.Microbial pro-duction of recalcitrant dissolved organic matter:Long-term carbon storage in the global ocean[J].Nature Reviews Microbiology, 2010, 8(8):593-599.

[44]

陈崇瑛, 刘再华.喀斯特地表水生生态系统生物碳泵的碳汇和水环境改善效应[J].科学通报, 2017, 62(30):38-48.

Chen C Y, Liu Z H.The role of biological carbon pump in the carbon sink and water environment improvement in karst surface aquatic ecosystems[J].Chinese Science Bulletin, 2017, 62(30):38-48.

相似文献(共20条)

[1]

把立强, 陶成, 李广友, 杨华敏. GasBench-IRMS在碳酸盐岩δ^13C和δ^18O在线连续分析中的应用. 岩矿测试, 2006, 25(4): 334-336.

[2]

黄婕, 于奭, 罗惠先, 林丹辉. 西江流域水文水化学因子对岩溶系统碳汇通量的影响分析. 岩矿测试, 2016, 35(6): 642-649. doi: 10.15898/j.cnki.11-2131/td.2016.06.011

[3]

裴建国, 章程, 张强, 朱琴. 典型岩溶水系统碳汇通量估算. 岩矿测试, 2012, 31(5): 884-888.

[4]

张志新, 董骥, 王桂荣. YCH-1型岩石矿物结晶水和二氧化碳仪器分析的相对测量法及参数选择. 岩矿测试, 1983, (2): 155-157.

[5]

徐瑞芳, 董骥, 安付生, 张志新, 吴苏斌. YCH-1型岩石矿物结晶水和二氧化碳分析仪. 岩矿测试, 1982, (2): 66-69.

[6]

高建飞, 徐衍明, 范昌福, 胡斌, 李延河. 元素分析仪-气体同位素质谱法分析硫酸钙样品的硫同位素组成. 岩矿测试, 2020, 39(1): 53-58. doi: 10.15898/j.cnki.11-2131/td.201908120128

[7]

夏宁, 宋苏顷. 海底沉积物中碳酸钙分析方法的研究. 岩矿测试, 1998, (2): 127-130.

[8]

王宁, 朱庆增, 谢曼曼, 宋智甲, 王道聪, 贾秋唤, 岑况, 储国强, 孙青. 尿素络合法分离-气相色谱/同位素质谱法分析土壤和植物中低含量(ppm级)正构烷烃的碳同位素. 岩矿测试, 2015, 34(4): 471-479. doi: 10.15898/j.cnki.11-2131/td.2015.04.016

[9]

查向平, 龚冰, 郑永飞. 高灵敏度元素分析仪-连续流同位素质谱法对硅酸盐岩中碳及碳同位素组成的精确测定. 岩矿测试, 2017, 36(4): 327-339. doi: 10.15898/j.cnki.11-2131/td.201611190174

[10]

张勖华. 电导法测定岩矿中二氧化碳. 岩矿测试, 1989, (4): 296-299.

[11]

李淑玲. 二氧化碳—水体系的拉曼光谱研究. 岩矿测试, 1998, (3): 177-180.

[12]

白瑞梅, 李金城. 热解硫酸钡制备硫同位素分析试样二氧化硫. 岩矿测试, 1998, (1): 40-43.

[13]

张逐月, 刘美美, 谢曼曼, 王道聪, 凌媛, 尚文郁, 刘舒波, 岑况, 孙青. 5A分子筛吸附混合溶剂洗脱-气相色谱-同位素质谱分析土壤中正构烷烃单体碳同位素. 岩矿测试, 2012, 31(1): 178-183.

[14]

龙梅, 裴世桥. 近红外反射光谱学在岩石矿物研究中的应用Ⅲ.快速测定地质样品中二氧化碳. 岩矿测试, 2005, (1): 26-30.

[15]

周瑶琪, 倪培, 陈勇. 一种获取包裹体内压的新方法——二氧化碳拉曼光谱法. 岩矿测试, 2006, 25(3): 211-214.

[16]

李强, 黄雅丹, 何若雪, 于奭, 宋昂, 曹建华. 岩溶水体惰性有机碳含量及其存在机理. 岩矿测试, 2018, 37(5): 475-478. doi: 10.15898/j.cnki.11-2131/td.201807250088

[17]

常文博, 李凤, 张媛媛, 贺行良. 元素分析-同位素比值质谱法测量海洋沉积物中有机碳和氮稳定同位素组成的实验室间比对研究. 岩矿测试, 2020, 39(4): 535-545. doi: 10.15898/j.cnki.11-2131/td.202003090027

[18]

李立武, 胡沛青, 张铭杰, 房玄, 杜丽. 岩石热脱气单体碳/氢同位素组成分析装置. 岩矿测试, 2005, (2): 135-137.

[19]

黄仕永, 金秉慧. 70年来的岩石矿物化学分析(二). 岩矿测试, 1982, (4): 42-50.

[20]

杨会, 唐伟, 吴夏, 王华, 应启和, 涂林玲. Kiel Ⅳ-IRMS双路在线分析微量碳酸盐的碳氧同位素. 岩矿测试, 2014, 33(4): 480-485.

计量
  • PDF下载量(20)
  • 文章访问量(898)
  • 被引次数(0)
目录

Figures And Tables

岩溶泉补给地表溪流二氧化碳脱气作用研究

蓝高勇, 汪智军, 殷建军, 唐伟, 吴夏, 杨会