| 重庆金佛山自然保护区内外地下水化学特征对比研究 |
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| 引用本文： | 王鹏,沈立成,伍坤宇,肖琼,周小萍,杨平恒.重庆金佛山自然保护区内外地下水化学特征对比研究[J].中国岩溶,2012,31(2):165-172. |
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| 作者姓名： | 王鹏 沈立成 伍坤宇 肖琼 周小萍 杨平恒 |
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| 作者单位： | 西南大学地理科学学院、教育部三峡库区生态环境重点实验室,重庆,400715 |
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| 基金项目： | 国家自然科学基金项目(编号:41072192、41103068),中央高校基本科研业务费专项资金资助项目(编号:XDJK2010B006),重庆市科委院士专项(编号:CSTS,2010BC7004),高等学校博士学科点专项科研基金项目(编号:20100182120029),重庆市国土房管局科技项目,西南大学博士基金项目(编号:SWUB2008013、SWU111009) |
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| 摘 要： | 利用重庆金佛山自然保护区22个地下水排泄点2005-2009年的水化学监测数据,对比了保护区内、外水化学特征差异及影响因素。结果表明:保护区外地下水的pH值较保护区内的要低,但电导率则较高;自然保护区外地下水的Ca2+、Mg2+、Na+、K+、Cl-、NO3-、SO24-、HCO3-浓度中值比自然保护区内的分别高27.78 mg/L、3.23 mg/L、3.47 mg/L、0.97 mg/L、2.38 mg/L、9.29 mg/L、15.06mg/L、42.03mg/L;保护区内白云岩地下水的Mg2+/Ca2+(摩尔比)为0.76～1.33,明显比保护区外灰岩、碎屑岩区的高,但保护区外灰岩地下水的Mg2+/Ca2+(摩尔比)较保护区内灰岩区的更高。岩溶地下水系统地球化学的敏感性以Ca2+、HCO3-、NO3-较为敏感,保护区内地下水的平均敏感指数(GSI)GSICa2+为0.097,GSIHCO-3为0.125,GSINO-3为0.008;保护区外地下水的GSICa2+为0.415,GSIHCO-3为0.334,GSINO-3为0.648。护区内所有取样点水质均为I或Ⅱ类;而保护区外地下水因受农业施肥、工业生活污水影响,1、16、19号泉的NO3-浓度偏高,为Ⅴ类,其余为Ⅲ类。总体上,保护区内水质明显优于保护区外,可见设立自然保护区对于保护岩溶水具有积极意义。
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| 关 键 词： | 地下水 地球化学 敏感性 自然保护区 重庆金佛山 |
| 收稿时间： | 6/2/2011 12:00:00 AM |
Comparing on the chemic features of the ground water in and around the Jinfoshan Natural Reserve in Chongqing |
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| WANG Peng,SHEN Li-cheng,WU Kun-yu,XIAO Qiong,ZHOU Xiao-ping and ANG Ping-heng.Comparing on the chemic features of the ground water in and around the Jinfoshan Natural Reserve in Chongqing[J].Carsologica Sinica,2012,31(2):165-172. |
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| Authors: | WANG Peng SHEN Li-cheng WU Kun-yu XIAO Qiong ZHOU Xiao-ping and ANG Ping-heng |
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| Institution: | School of Geographical Science, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education;School of Geographical Science, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education;School of Geographical Science, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education;School of Geographical Science, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education;School of Geographical Science, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education;School of Geographical Science, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education |
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| Abstract: | In light of the hydrochemical monitoring data of 22 groundwater discharge points, the differences of the hydrochemic features and the impact factors of the groundwater in and around the Jinfoshan natural re- serve,Chongqing is compared in the article. The results show that the pH values of the springs outside the reserve are lower than those inside, but the conductivity is higher. The median concentration of Ca2＋ ,Mg2＋ , Na＋ ,K＋ ,Cl- ,NO3 , SO4^2- and HCO3- around the reserve are respectively 27.78 mg/L, 3.23 mg/L, 3.47 mg/L,0.97 mg/L,2.38 mg/L,9.29 mg/L,15.06 mg/L and 42.03 mg/L higher than those inside the natural reserve. stone or The MgZ＋/Caz＋ （mole ratio） in dolomite aquifer is 0.76-1.33, obviously higher than that in lime- clastic rock aquifer. But in the same limestone aquifer the Mg2＋/Ca2＋ around the reserve is higher than those inside. The results indicate that GSICa2＋ is 0. 097,GSIHCO3^- is 0. 125,GSINO3^- is 0. 008 in the reserve,and GSIC4＋ is 0.415,GSIHCO3 is 0. 334,GSINo3 is 0. 648 around the reserve. The water quality of the reserve is mostly grade Ⅰ and Ⅱ. But affected by agricultural fertilization, industrial pollution and sewage discharge, the springs water outside the reserve is Ⅲ and Ⅴ , and the NO3- concentration is higher in springs NO. 1, NO. 16 and NO. 19. Over all, the water quality inside the reserve is significantly better than the out-side. It can clearly be seen that the establishment of natural reserves has positive significance for karst water protection. |
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| Keywords: | groundwater geochemistry susceptibility natural reserve Jinfoshan in Chongqing |
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