초록

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Abstract ▼ AI-Helper

This study was conducted to find out the relationship between microflora in groundwater and its physico-chemical environmental factors at the 59 sites, where distributed at 3 cities and 18 counties in Jeonranam-Do, Korea. The average values of environmental factors were as followings; pH 6.9, temper...

This study was conducted to find out the relationship between microflora in groundwater and its physico-chemical environmental factors at the 59 sites, where distributed at 3 cities and 18 counties in Jeonranam-Do, Korea. The average values of environmental factors were as followings; pH 6.9, temperature 20.1 $^{\circ}C$, dissolved oxygen 6.5 mg/1, the depth of wells 80.1 m, and nitrate 10.7 mg/1. The average value of microbial population size; Heterotrophic bacteria-NA (HPC-NA) and heterotrophic bacteria-YEPD (HPC-YEPD) were 1.4${\times}$10$^3$CFU/ml and 0.59${\times}$10$^3$ CFU/ml respectively HPC-YEPD numbers were 42.1% of HPC-YEPD. Coliform bacteria were detected at 16 sites, and its average numbers were 6.7 CFU/ml. General fungi were detected at 14 sites, and its had average numbers were 3.9 CFU/ml. The correlation coefficient was calculated value as relation index between the microbial population sizes and environmental factors in groundwater. In case of HPC-NA, the correlation coefficient value with dissolved oxygen was 0.087 But it showed negative correlation coefficient with other factors. In case of HPC-YEPD, the correlation coefficient value with pH, temperature and nitrate were 0.0957, 0.0019 and 0.0151 respectively. It was concluded that the population size of HPC-NA were influenced by the order of temperature, dissolved oxygen, pH and the depth of wells and that HPC-YEPD were influenced by the order of pH, dissolved oxygen, nitrate, the depth of wells and temperature.