기후 자료 및 퇴적물 입도분석을 통한 묵논습지의 퇴적환경 연구
A Study on the Sedimentary Environment of Abandoned Paddy Wetlands through Climate Data and Sediment Grain Size Analysis
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This study identified the sedimentary environment of the abandoned paddy wetlands in the Jang-gumegi wetland in Yeongyang-gun through climate data and sediment grain size analysis. The analysis of climate data revealed that the annual mean temperature is a significant factor by potentially impact on the ecosystem and sedimentary environment in the study area. There was no statistically difference in annual mean temperature or annual precipitation between the two periods(A: 1997-2009, B: 2010-2022). However, during the seasonal mean temperature change, the annual mean temperature was higher in period B. The greatest amount of change occurred during the summer, and the results were statistically significant at the 5% level. In the analysis of sediment grain size, the average grain size is fine sand, average sorted is very poorly sorted, and the skewness were typical characteristics of river origin sediments. As a result of physicochemical analysis, it was found that soil acidification had been caused by suspended matter f lowing from ponds and valleys in the upper part of the wetland, and that salts and organic matter had accumulated. The results of this study can be used as basic data for the further research on the development process of abandoned paddy wetlands.
Abstract
This study identified the sedimentary environment of the abandoned paddy wetlands in the Jang-gumegi wetland in Yeongyang-gun through climate data and sediment grain size analysis. The analysis of climate data revealed that the annual mean temperature is a significant factor by potentially impact on the ecosystem and sedimentary environment in the study area. There was no statistically difference in annual mean temperature or annual precipitation between the two periods(A: 1997-2009, B: 2010-2022). However, during the seasonal mean temperature change, the annual mean temperature was higher in period B. The greatest amount of change occurred during the summer, and the results were statistically significant at the 5% level. In the analysis of sediment grain size, the average grain size is fine sand, average sorted is very poorly sorted, and the skewness were typical characteristics of river origin sediments. As a result of physicochemical analysis, it was found that soil acidification had been caused by suspended matter f lowing from ponds and valleys in the upper part of the wetland, and that salts and organic matter had accumulated. The results of this study can be used as basic data for the further research on the development process of abandoned paddy wetlands.
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