| Title |
Comparison of Tributary Water Qualities Relating to Land Use Types in the Han River Watershed |
| Authors |
박석순 ; 박배경 ; 이상호 ( Seok Soon Park ; Bae Kyung Park ; Sang Ho Lee ) |
| Abstract |
Multiple linear regression analysis was performed to compare stream water qualities relating to land-use types in the Han River watershed. Explanatory variables were ratios of each land use area per total watershed and response variables were water qualities of receiving streams. The computed regression coefficients of each explanatory variables were used as the degrees of water quality impacts by land use types. The watershed was classified into four (4) different land use types : urban and industrial area, agricultural area, forest area, and green belt area (which has been preserved from development). Ninety four (94) tributaries were sampled three times during different flow conditions from March to July, 1992. Water quality parameters included in this study were Biochemical Oxygen Demand, Total Suspended Solids, Anionic Surfactant, and Conductivity. Regression coefficients were computed for each water quality and significance of coefficient values were estimated using the t- test. Linear relationship between explanatory variables and response variable was also measured by the F-test. From this study, it was concluded that there were significant linear relationships between receiving stream water qualities and land use types such that regression analysis could be used as a good comparison tool. The computed values of regression coefficients could be used as quantitative measurements of land use impacts. |