北港地區地下水水質變化之研究

dc.contributor.author 劉乃綺 zh_tw
dc.date.accessioned 2014-10-27T15:40:32Z
dc.date.available 2014-10-27T15:40:32Z
dc.date.issued 1988-03-?? zh_TW
dc.description.abstract At Pie-kang area, awing to the overpumping of groundwater, the water level is declined and the water quality is deteriorated. After field observation and study on groundwater quality, the author comes to the following conclusions. 1. For many years, the water level had continued to decline, the lowest one at kou-Hu was 25 meter below mean sea level. It is due to overpumping of groundwater by a lot of fish pond and agriculture use. 2. The electrical conductivity of most water of deep wells was between 300 to 750 μσ/cm, and those the electrical conductivity was more than 750 μσ/cm at the beginning of pumping will descended later on as time went by. 3. By the chemical analysis of water, the ratio of S042-/CI-, bar diagram, the ratio of CI-/(C032- + HC03-), Piper's trilinear diagrams, the rate of SAR and so on, the quality of most water of deep walls was good. The water of poor quality gathered at the area southern Niu-Tiau-Wan drainage channel. It also shows there is no seawater intrusion now. 4. The poor ground water quality in some areas were due to the deterioration of shallow aquifer, which was due to flow backward of seawater. There fore well contruction should avoid shallow aquifer or isolate it. 5. In order to prevent the deterioration of groundwater quality, the better ways are to reduce the pumping amount, prevent flow back of seawater and improve drainage system etc. en_US
dc.identifier 7FAAE22C-9B64-EABF-B56A-DD85BB04394A zh_TW
dc.identifier.uri http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/23739
dc.language 中文 zh_TW
dc.publisher 地理學系 zh_tw
dc.publisher Department of Geography, NTNU en_US
dc.relation (14),235-278 zh_TW
dc.relation.ispartof 國立臺灣師範大學地理研究報告 zh_tw
dc.subject.other 水質 zh_tw
dc.subject.other 北港 zh_tw
dc.subject.other 地下水 zh_tw
dc.title 北港地區地下水水質變化之研究 zh-tw
dc.title.alternative Changes of the Groundwater Quality around the Pei-Kang Area zh_tw
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