Study on the Comparison of Hydro-chemical Characters of Karst Spring for Different Elevations in Sub-mountain Area-A Case Study on Bitan and Shuifang Springs of Jinfo Mt. In Chongqing

• 亚高山不同海拔高程中的岩溶泉水化学特征对比研究--以重庆金佛山碧潭泉和水房泉为例