Study on the Quality of Hyporheic Zone at Ha-Pen Watershed druing Precipitation

• Main Authors: Yi-Ting Cheng, 鄭怡婷
• Other Authors: Hsin-Hsiung Chen
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/89703124064397145621

碩士 === 國立臺灣大學 === 森林學研究所 === 88 === The quality of hyporheic zone at Ha-Pen watershed during precipitation was examined. Hyporheic zone samples were collected from wells during 1999/9/2∼1999/9/3, 1999/11/12∼1999/11/13 and 2000/2/19∼2000/2/26, with different precipitation types to one another. The concentrations of ions in hyporheic zone are in the sequence as : Ca+2 > SO4-2 > Na+ > Cl- > NO3- > Mg+2 > K+. The concentrations of Mg+2、Ca+2 and NO3- have the highest correlativity to one another in all analyzed ions. There are the most poor correlativity between the concentration of Na+ and the concentration of K+. According to the similarity of ions, distribute the ions into different types. Two types have been made : One is Na+-type and the other is Mg+2-Ca+2-NO3--type. The variation of the concentrations of Cl- and SO4-2 is similar to Na+-type and K+ is similar to Mg+2-Ca+2-NO3--type. The analytical result of 2000/2/19∼2000/2/26 reveals that : The concentrations of Mg+2、Ca+2、NO3- and K+ have the inverse relation to specific resistance in well-water. The concentration of Na+ relates to the variation of water level in well.