Entire Catchment and Buffer Zone Approaches to Modeling Linkage Between River Water Quality and Land Cover——A Case Study of Yamaguchi Prefecture,Japan  

作　　者：Bahman Jabbarian AMIRI Kaneyuki NAKANE 

机构地区：[1]Division of Environmental Dynamics and Management,Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan

出　　处：《Chinese Geographical Science》2008年第1期85-92,共8页中国地理科学（英文版）

摘　　要：This study investigated the linkages between river water quality and land use in river catchments in Yama- guchi Prefecture, the western Japan, in order to examine the effect of land use changes of both entire catchment and buffer zone on river water quality. Dissolved Oxygen (DO), pH, Biological Oxygen Demand (BOD), Suspended Solids (SS), Escherichia coli, Total Nitrogen (TN) and Total Phosphorus (TP) were considered as river water quality indica- tors. Satellite images were applied to generating the land use map. Multiple regression model was applied to linking the changes in the river water quality with the land uses in both entire catchment area and buffer zone. The results in- dicate that the integrative application of land use data from the entire catchment and the buffer zone could give rise to more robust model to predict the concentrations of Suspended Solids (r2=0.88) and Total Nitrogen (r2=0.90), rather than models which separately considered land use data in catchment and buffer zone.This study investigated the linkages between river water quality and land use in river catchments in Yamaguchi Prefecture, the western Japan, in order to examine the effect of land use changes of both entire catchment and buffer zone on river water quality. Dissolved Oxygen （DO）, pH, Biological Oxygen Demand （BOD）, Suspended Solids （SS）, Escherichia coli, Total Nitrogen （TN） and Total Phosphorus （TP） were considered as river water quality indicators. Satellite images were applied to generating the land use map. Multiple regression model was applied to linking the changes in the river water quality with the land uses in both entire catchment area and buffer zone. The results indicate that the integrative application of land use data from the entire catchment and the buffer zone could give rise to more robust model to predict the concentrations of Suspended Solids （r^2=0.88） and Total Nitrogen （r^2=0.90）, rather than models which separately considered land use data in catchment and buffer zone.

关 键 词：land use water quality buffer zone entire catchment Yamaguchi Prefecture JAPAN 

分 类 号：X832[环境科学与工程—环境工程]