霞ヶ浦流域における持続可能な水質保全のための都市・農村間の排出枠取引モデル

概要

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This study aims to verify the effects of point-nonpoint effluent trading to preserve sustainable water quality in closed water bodies such as Kasumigaura, where amount of pollutant (nitrogen, phosphate, etc.) is mainly discharged by point source effluent from urban cities and nonpoint source effluent from rural farm villages. As a result of comparison of lifecycle costs to reduce amount of pollutant and preserve water quality in Kasumigaura between pre-trading and post-trading with the model, it has been appeared that totally about 16〜19 % (depending on trading ratio of point-nonpoint effluent) cost reduction is possible by introduction of point-nonpoint effluent trading. This study shows that the policy mix of economical methods (effluent trading, surcharge, subsidy, etc.) can be the best combination policy to meet the Environmental Quality Standards for Water Pollution with the minimum total burden in a basin.
環境アセスメント学会の論文
2006-02-15