摘要
为了进一步了解人类活动对岩溶区地下河水水质的影响,同时为岩溶地下水合理利用和防治污染提供依据,于2010年5月中旬到2010年6月中旬期间,对重庆市青木关地下河的pH值、电导率、HCO_3~ˉ、Ca^(2+)、SO_4^(2-)、Mg^(2+)以及N0_3~ˉ等水化学指标进行了连续监测,结果表明,青木关地下河水质变化与地下河上游的人类农业施肥活动密切相关,地下河水中C1~ˉ、NO_3~ˉ和SO_4^(2-)变化与地下河上游的农业施肥活动表现出良好的响应关系,施肥期地下水质变化为岩溶地下河水合理利用和防治污染提供依据。
The hydrochemical indicators,such as pH,electrical conductivity(EC),HCO_3~1、Ca^(2+)、So_4^(2-)、NMg^(2+) and NO_3^- of the underground water in a karst valley at Qingmuguan of Chongqing were monitored continually from the middle of May to the middle of June in order to study influence of agricultural activity on groundwater of karst regions and to provide evidences for utilizing in reasonable and preventing from contaminations.The results show that variations of groundwater quality of Qingmuguan were related closely to agricultural fertilize and rainfalls upstream.Variations of Cl^-、NO_3-、SO_4^(2-) in groundwater were influenced by rainfalls and agricultural fertilizing of upstream respectively.During the period of agricultural fertilize,the variations of groundwater's hydrochemistry provide evidence for making rational use and preventing from contaminations in Karst Valleys.
出处
《西昌学院学报(自然科学版)》
2012年第1期32-35,共4页
Journal of Xichang University(Natural Science Edition)
基金
国家自然科学基金(41040026
41172331
41103068)
中国地质调查局项目(1212011087119)
国土资源部公益性专项(201111022)
国土资源部岩溶动力重点实验室开放课题(KDL 2011-01)
关键词
水化学
施肥
岩溶地下河
青木关
Hydrochemistry
Fertilize
groundwater of karst
Qingmuguan