| 重庆雪玉洞洞穴滴水水文地球化学时空变化特征及其环境意义 |
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| 引用本文： | 曾泽,蒋勇军,吕现福,曾思博,胡刘婵,雷佳琪.重庆雪玉洞洞穴滴水水文地球化学时空变化特征及其环境意义[J].环境科学,2018,39(6):2641-2650. |
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| 作者姓名： | 曾泽 蒋勇军 吕现福 曾思博 胡刘婵 雷佳琪 |
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| 作者单位： | 西南大学地理科学学院岩溶环境重庆市重点实验室 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0502306）；国家自然科学基金项目（41472321）；重庆市自然科学基金项目（CSTC2016JCYJYS0003） |
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| 摘 要： | 为揭示不同类型的洞穴滴水水文地球化学指标季节变化特征及其对外界气候变化的响应机制,从2015年3月至2017年3月对重庆丰都雪玉洞内的4处滴水点的地球化学指标进行两年的动态监测,结果表明,4个滴水点的水化学类型主要为HCO_3~--Ca~(2+)型,且常年处于沉积状态,但不同类型的滴水点在滴量及离子浓度方面差异明显;受制于基岩溶蚀作用、稀释作用、先期沉积作用(PCP)等地球化学进程,4个滴水点的Ca~(2+)、Mg~(2+)、HCO_3~-、EC、pH、pCO_2、SIc等地球化学指标具有显著的季节变化规律,可以很好地响应外部气候环境变化;不同类型滴水点的Mg/Ca比变化规律并不一致,这与每个滴水点的运移路径不同及PCP强度不同有关;4个滴水点的δ~(13)C_(DIC)受到土壤CO_2浓度及水动力条件的影响,与外界气温降水量均表现出一定的相关性,但在以管道流为主的滴水点中,δ~(13)C_(DIC)往往在短时间尺度上表现出雨量效应.
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| 关 键 词： | 雪玉洞 洞穴滴水 地球化学特征 Mg/Ca δ13CDIC |
| 收稿时间： | 2017/9/9 0:00:00 |
| 修稿时间： | 2017/11/30 0:00:00 |
Spatial and Temporal Variation Characteristics of Drip Water Hydrogeochemistry in the Xueyu Cave of Chongqing and Its Implications for Environmental Research |
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| ZENG Ze,JIANG Yong-jun,L&#; Xian-fu,ZENG Si-bo,HU Liu-chan and LEI Jia-qi.Spatial and Temporal Variation Characteristics of Drip Water Hydrogeochemistry in the Xueyu Cave of Chongqing and Its Implications for Environmental Research[J].Chinese Journal of Environmental Science,2018,39(6):2641-2650. |
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| Authors: | ZENG Ze JIANG Yong-jun L&#; Xian-fu ZENG Si-bo HU Liu-chan and LEI Jia-qi |
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| Institution: | Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China,Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China and Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing 400715, China |
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