Influence of Agriculture and Inter-Regional Trading on Watershed Water Quality and Production Managements

K. Shoichi (Japan)

Keywords

Interregional inputoutput model, water quality improvement, trading strategy, environmentally conscious agriculture, and comprehensive watershed management.

Abstract

This study is made to find out a watershed management method to promise water quality and inter-regionally equal goods production growth. Estimating inter-regional input output tables, we examine the current inter-regional and inter-sectoral dependencies on the goods production and the corresponding chemical oxygen demand (COD) burden. Especially we pay attention to the agriculture sector that may give a strong impact on water pollution and quantify the input structure change caused by Japanese environmentally conscious rice farming to assess its spillover effect in goods productivity and eco-efficiency within the watershed. Furthermore, we investigate the mechanism how the inter-regional trading contributes to efficient water quality improvement and fair development in regional goods productions by characterizing individual watershed and inter-watershed managements.

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