| 桂江流域岩溶碳汇特征 |
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| 引用本文： | 黄奇波,刘朋雨,覃小群,孔祥胜.桂江流域岩溶碳汇特征[J].中国岩溶,2011,30(4):437-442. |
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| 作者姓名： | 黄奇波 刘朋雨 覃小群 孔祥胜 |
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| 作者单位： | 1. 中国地质科学院岩溶地质研究所,广西桂林,541004
2. 中国地质科学院岩溶地质研究所,广西桂林541004;广西师范学院资源与环境科学学院,广西南宁530000 |
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| 基金项目： | 基金项目：中国地质调查项目（1212011087121） |
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| 摘 要： | 为研究岩溶区碳汇动态变化特征,使用德国Merck公司生产的碱度计每月定期对桂江流域14个岩溶大泉和16条地下河出口水中HCO3-含量进行了现场测定.结果表明桂江流域枯水期(11月至次年2月)地下水中HCO3-含量平均为223.62 mg/L,平水期(3月、9月)为222.11 mg/L,丰水期(4月至8月)为210.1...
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| 关 键 词： | 岩溶碳汇 地下河 岩溶泉 广西桂江流域 |
| 收稿时间： | 2011/10/26 0:00:00 |
The characteristics of karst carbon sink in the Guijiang Catchment |
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| Huang Qi-bo,Liu Peng-yu,Qin xiao-qun and Kong xiang-sheng.The characteristics of karst carbon sink in the Guijiang Catchment[J].Carsologica Sinica,2011,30(4):437-442. |
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| Authors: | Huang Qi-bo Liu Peng-yu Qin xiao-qun and Kong xiang-sheng |
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| Institution: | 1(1.Institute of Karst Geology,CAGS,Guilin,Guangxi 541004,China; 2.School of Resources and Environmental Sciences,Guangxi Teacher’s Education University,Nanning,Guangxi 530001,China) |
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| Abstract: | Karstification connects with global carbon circle closely. The erosion of carbonate can consume CO2 from atmosphere and soil air and convert them to HCO3- in the water, therefore, the feature of karstification carbon sink can be got by way of HCO3- monitoring in the water. The HCO3- concentration from 14 large karst springs and 16 outlets of underground river in Guijiang Catchment are tested on filed monthly and regularly with the alkalimeter made by Merk Corporation. It is found that the average concentration of HCO3- of groundwater is 223.62 mg/L in low water level period (from November to February in the next year), 222.11mg/L in normal water level period (in March and September) and 210.19 mg/L in high water level period ( from April to August). Although the mean concentration of HCO3-in high water level period is lower than that in normal water level period, but the discharge in high water level period is highest, which is twice more than that in normal water level period and 2.8 times as many as that in low water level period, so the carbon sink in high water level period is 4.7 and 2.7 times more than that in normal and low water level periods, and the carbon sink in the three periods accounting for 63.13%, 13.35% and 23.51%, of the whole year respectively. |
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| Keywords: | karst carbon sink underground river karst spring the Guijiang Catchment in Guangxi |
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