【摘要】：論文對自2009年10月到2015年12月豫西雞冠洞兩處滴水:鯉魚戲水(LYXS)和天宮冰燈(TGBD)進行了連續(xù)定點監(jiān)測及取樣分析,并結合2015年8月4—6日對其進行的暴雨監(jiān)測,從不同時間尺度上分析了滴水的滴速、pH值、HCO_3~-、電導率、Ca~(2+)、Mg~(2+)、Ba~(2+)、Sr~(2+)、元素比值等指標的變化特征及其與降水的關系。結果表明:1)年際尺度上,雞冠洞滴水的水化學特征響應ENSO循環(huán)引起的多雨年與干旱年降水的變化,其主要受控于土壤CO_2的溶解、上覆物質的淋濾、先期沉積作用(PCP)的強弱;2)季節(jié)尺度上,滴水受巖溶水運移路徑、淋濾作用、水-巖反應時間及先期沉積作用等因素綜合影響表現(xiàn)出明顯的季節(jié)變化特征;3)在單場降雨尺度上,滴水的水化學特征都不同程度表現(xiàn)出隨滴率的變化而變化的趨勢,主要受到巖溶水的運移路徑、活塞效應、稀釋作用等因素影響,而與水-巖反應時間關系不大;4)受到2013年區(qū)域極端干旱后"老水"的滯留與2014年新降水的稀釋作用影響,其滴水水化學指標的極端值出現(xiàn)在降水量有所回升的2014年。
[Abstract]:From October 2009 to December 2015, two dripping sites of Jiguandong, West Henan Province, (LYXS) and (TGBD) of Tiangong Ice Lamp were continuously monitored and sampled, and the rainstorm monitoring was carried out from August 4 to 6, 2015. The characteristics of droplet velocity, pH value, HCO_3~-, conductivity, Ca~ (2), Mg~ (2), Ba~ (2), Sr~ (2), element ratio and their relationship with precipitation were analyzed in different time scales. The results are as follows: 1) on an interannual scale, the hydrochemical characteristics of the water droplets in the Cave respond to the changes of precipitation in rainy and dry years caused by the ENSO cycle, which are mainly controlled by the dissolution of soil CO_2 and the leaching of overlying substances. The pre-deposition of (PCP); 2) on a seasonal scale, dripping water is affected by Karst water transport path, leaching, water-rock reaction time and pre-sedimentation. 3) on a single rainfall scale, the hydrochemical characteristics of dripping water vary with the drop rate, and are mainly affected by the migration path of karst water, piston effect, dilution effect and so on. But it has little relation with the reaction time of water-rock. 4) influenced by the dilution of the "old water" after the regional extreme drought in 2013 and the new precipitation in 2014, the extreme value of the drop water chemical index appeared in 2014, when the precipitation recovered.
【作者單位】： 巖溶環(huán)境重慶市重點實驗室西南大學地理科學學院;國土資源部巖溶生態(tài)環(huán)境-重慶南川野外基地;河南省雞冠洞風景名勝區(qū)管理處;
【基金】：國家重點研發(fā)計劃專題項目(2016YFC050230205) 國家自然科學基金項目(41672160,41372177,40902053) 高等學校博士學科點專項科研基金項目(20090182120005) 中央高�；究蒲袠I(yè)務費專項(XDJK2011B004)~~
【分類號】：P532;P641.3

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