We investigated the groundwater qualities of wells around carcass burial areas, which had been constructed between 2011 and 2015. We evaluated the statistical distribution and temporal trends of water quality parameters, their relationships with precipitation, the types of groundwater compositions, ...
We investigated the groundwater qualities of wells around carcass burial areas, which had been constructed between 2011 and 2015. We evaluated the statistical distribution and temporal trends of water quality parameters, their relationships with precipitation, the types of groundwater compositions, and the correlation between water qualities and land use. The results showed that nitrate-nitrogen had a statistically-significant positive correlation with precipitation, suggesting that anthropogenic contaminants above the ground surface would infiltrate into groundwater during precipitation. The groundwater at the study areas were mainly classified into Ca-(Cl+NO3) and Ca-HCO3 types. When the nitrate-nitrogen contamination was closely examined in view of land use, it was found to have a stronger correlation with precipitation in residential-agricultural areas than in forest areas. Notably, the concentrations of nitrate-nitrogen, ammonium-nitrogen, and chloride showed no obvious trends along the distance from burial areas to groundwater wells. All of the above results indicate that such environmental variables as land use may have a more prevailing impact on the water qualities around carcass burial areas. This study can be useful in designing the management plan and preparing environmental investigation manuals for the groundwater contamination that is suspected to result from carcass burial.
We investigated the groundwater qualities of wells around carcass burial areas, which had been constructed between 2011 and 2015. We evaluated the statistical distribution and temporal trends of water quality parameters, their relationships with precipitation, the types of groundwater compositions, and the correlation between water qualities and land use. The results showed that nitrate-nitrogen had a statistically-significant positive correlation with precipitation, suggesting that anthropogenic contaminants above the ground surface would infiltrate into groundwater during precipitation. The groundwater at the study areas were mainly classified into Ca-(Cl+NO3) and Ca-HCO3 types. When the nitrate-nitrogen contamination was closely examined in view of land use, it was found to have a stronger correlation with precipitation in residential-agricultural areas than in forest areas. Notably, the concentrations of nitrate-nitrogen, ammonium-nitrogen, and chloride showed no obvious trends along the distance from burial areas to groundwater wells. All of the above results indicate that such environmental variables as land use may have a more prevailing impact on the water qualities around carcass burial areas. This study can be useful in designing the management plan and preparing environmental investigation manuals for the groundwater contamination that is suspected to result from carcass burial.
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