| Entire Catchment and Buffer Zone Approaches to Modeling Linkage Between River Water Quality and Land Cover——A Case Study of Yamaguchi Prefecture, Japan |
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| 作者姓名： | Bahman Jabbarian AMIRI Kaneyuki NAKANE |
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| 作者单位： | Division of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan |
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| 摘 要： | 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.
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| 关 键 词： | 缓冲剂 水质 集水区 日本 |
| 收稿时间： | 2007-06-31 |
| 修稿时间： | 2007-11-25 |
Entire catchment and buffer zone approaches to modeling linkage between river water quality and land cover—A case study of Yamaguchi Prefecture, Japan |
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| Bahman Jabbarian AMIRI Kaneyuki NAKANE.Entire catchment and buffer zone approaches to modeling linkage between river water quality and land cover—A case study of Yamaguchi Prefecture, Japan[J].Chinese Geographical Science,2008,18(1):85-92. |
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| Authors: | Bahman Jabbarian Amiri Kaneyuki Nakane |
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| Institution: | (1) Division of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan |
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| Abstract: | This study investigated the linkages between fiver 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 andbuffer 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 eousidered as river water quality indica-tors. Satellite images were applied to generating the land use map. Multiple regression model was applied to linkingthe changes in the fiver 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 tomore robust model to predict the concentrations of Suspended Solids (r2=0.88) and Total Nitrogen (r2=0.90), ratherthan models which separately considered land use data in catchment and buffer zone. |
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| Keywords: | land use water quality buffer zone entire catchment Yamaguchi Prefecture Japan |
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