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Ma, Junting
- Effects of Porous Confined Groundwater Depth of Yancheng Coastal Alluvial Plain on Water Quality
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Authors
Affiliations
1 Key Laboratory of Virtual Geographical Environment, Ministry of Education (National Education Administration), College of Geographical Sciences, Nanjing Normal University, Nanjing, 210023, CN
2 Jiangsu Center for Collaborative Innovation, in Geographical Information Resource Development and Application, Nanjing, 210023, CN
1 Key Laboratory of Virtual Geographical Environment, Ministry of Education (National Education Administration), College of Geographical Sciences, Nanjing Normal University, Nanjing, 210023, CN
2 Jiangsu Center for Collaborative Innovation, in Geographical Information Resource Development and Application, Nanjing, 210023, CN
Source
Nature Environment and Pollution Technology, Vol 16, No 1 (2017), Pagination: 115-124Abstract
The space structure of aquifer (group) does not only determine the spatial distribution pattern of groundwater, but also impose some effects on the groundwater quality. Based on the internal hydrogeological borehole data in hydrogeological division of Yancheng Coastal Plain and water quality factor monitoring data during 2005~2014, geographic information science (GIS) and analysis of variance (ANOVA) method etc., are applied to the research response characteristics of aquifer roof depth changes in time-space dimension for the quality of porous groundwater of confined aquifer III in experiment sample area. This paper analyses the dynamic evolution laws of groundwater quality and proposes suggestions on groundwater management and protection in the research area. The research result shows that the depth of confined aquifer III in this area mostly goes between -118.9 ~-85.45 m. Due to hydrogeological conditions of groundwater with different depths and exploitation and utilization differences, there is some correlation between a typical water quality factor of groundwater and aquifer depth. Mineralization, total alkalinity and total bacterial count have the strongest correlation strength with the depth (relevancy: 69.67 %, 75.76 % and 58.09 %). The strength of total hardness is at an intermediate level (49.18 %). KMnO4 index is less affected by the depth (35.27 %). It is also found that the correlation strengths between factors and depth in various depth classification areas are significantly different, indicating different dynamic evolution characteristics.Keywords
Confined Aquifer, Water Quality Factor, Aquifer Depth, Correlation, Dynamic Evolution.Full Text
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