喀斯特关键带水—土—气CO2分压垂直转化特征及影响因素
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汪炎林, 周忠发, 薛冰清, 李坡, 田衷珲, 张结, 汤云涛
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The vertical conversion characteristics and influence of the partial pressure of CO2 in the water-soil-atmosphere of critical karst zone
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WANG Yanlin, ZHOU Zhongfa, XUE Bingqing, LI Po, TIAN Zhonghui, ZHANG Jie, TANG Yuntao
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表2 洞穴水相关离子及各层PCO2特征
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Tab. 2 The features of the relevant ions in the cave water and PCO2 in each layer
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| 最小值 | 最大值 | 平均值 | 标准差 | 方差 | 变异系数 | pH | 8.250 | 8.620 | 8.390 | 0.090 | 0.008 | 0.001 | EC(μs·cm-3) | 324.000 | 594.000 | 410.104 | 56.150 | 3152.861 | 7.688 | SIc | 0.740 | 1.270 | 0.968 | 0.099 | 0.010 | 0.010 | Ca2+(mmol·L-1) | 1.030 | 2.200 | 1.711 | 0.194 | 0.038 | 0.022 | Mg2+(mmol·L-1) | 0.340 | 0.810 | 0.620 | 0.084 | 0.007 | 0.011 | HCO3-(mmol·L-1) | 2.600 | 5.000 | 3.779 | 0.435 | 0.189 | 0.050 | SO42-(mmol·L-1) | 0.140 | 0.340 | 0.208 | 0.037 | 0.001 | 0.005 | PCO2(A) (vol%) | 0.045 | 0.166 | 0.086 | 0.183 | 0.033 | 0.011 | PCO2(W) (vol%) | 0.036 | 0.129 | 0.077 | 0.118 | 0.014 | 0.004 | PCO2(H) (vol%) | 0.275 | 1.513 | 0.711 | 0.136 | 0.018 | 0.008 | PCO2(S) (vol%) | 深度20 cm | 0.661 | 2.291 | 1.230 | 0.162 | 0.026 | 0.014 | 深度40 cm | 0.676 | 2.500 | 1.309 | 0.101 | 0.010 | 0.003 | 深度60 cm | 0.603 | 2.692 | 1.297 | 0.177 | 0.031 | 0.010 | 深度80 cm | 0.631 | 2.512 | 1.271 | 0.087 | 0.008 | 0.004 |
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