選択実験による農業面源汚染を抑制するための農業政策の評価:―中国太湖流域を事例として―

概要

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Environmental degradation has become a serious problem in China under the rapid economic development process. Especially, water pollution is one of the most serious environmental problems. The Agriculture Non-point Source Pollution is currently the biggest cause of water contamination in China. It is said that more than 40% of the water pollutants has been derived from agricultural production activities.In this paper, the Tai Hu lake basin is selected as a field survey area. The purpose of this paper is to grasp the situation and background of Agriculture Non-Point Source Pollution on that area, and to discuss the agricultural policy that the government should take into account in order to prevent this kind of pollution.We conducted a questionary survey to 800 farm households in 40 villages located in 5 cities of Tai Hu lake basin. By applying Choice experiment method, the agricultural policies such as fertilizer application, technical production guidance, low interest financing, and direct payment of subsidies by the government (which promotes changes in agricultural methods) seem to be effective methods to prevent Agriculture Non-point Source Pollution. Finally, future agricultural policy and the promotion of environmental friendly agriculture are discussed.