China will be necessary to keep self sustenance of foods if it will maintain the dignified sovereignty i n the international community of the 21^st century. Situations of the agricultural environment and ecology are degrading year by year. Policies to improve the situation that the Chinese Communist government has been pursed are summarized, fundamental problems that those policies underlie are touched and policy direction is presented in this paper. Although the policies to reduce the contamination of land and water resources have achieved a certain amount of reduction, however, they do not provide the turning point to diminish it drastically. As concluding remarks, two policy choices are presented. The first one is to allocate more budget to the environmental and ecological dimension including agriculture(hopefully3 % ofGNP). The second one is to promote organic farming as the fundamental method to bring about sustainability of agriculture.

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Coal fired electric power plants in Japan use plenty amount of Australian coal and a lot of gypsum is produced. Gypsum is very useful for alkaline (sodic) soil reclamation in Australia because sodic soil is one of her major environmental problems. This paper proposes a possible Joint Implementation project between Japan and Australia by its utilization.

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We developed an optimization type energy model named ROSE (Refuse Option for Supplying Energy) to evaluate the energy use technologies of the refuse in the city. We examined future introduction possibility about the refuse power generation, the refuse cogeneration and the RDF cogeneration. When electricity generated with refuse energy system is supplied to each area independently, RDF cogeneration is introduced. On the other hand. refuse power generation is introduced when the electricity generated in the refuse energy system can be supplied to the whole area. The introduction percentage of the RDF cogeneration increases by assigning constraint to the amount of CO2 emission. The introduction of refuse energy system leads to reduce both the energy supply and CO2 emission. without entailing increase in the energy system.

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[in Japanese]

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