中国岩溶2012，Vol.31Issue(2)：165-172,8.
重庆金佛山自然保护区内外地下水化学特征对比研究
Comparing on the chemic features of the groundwater in and around the Jinfoshan Natural Reserve in Chongqing
摘要
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 reserve, 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-,SO42- and HCOr 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. The Mg2+/ Ca2+ (mole ratio) in dolomite aquifer is 0. 76-1. 33, obviously higher than that in limestone or 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 GSICA2+ 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 outside. It can clearly be seen that the establishment of natural reserves has positive significance for karst water protection.关键词
地下水/地球化学/敏感性/自然保护区/重庆金佛山Key words
groundwater/geochemistry/susceptibility/natural reserve/Jinfoshan in Chongqing分类
天文与地球科学引用本文复制引用
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):165-172,8.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:20100182130029),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) （编号:41072192、41103068）
