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内容記述 |
Ishigaki Island, (Okinawa Prefecture) lies at almost the west end of Japan. The area is 223km2, and the population is 43,000. Many people work in agriculture and tourism. Recently, at Ishigaki Island, the damage which the coral reef suffers, due to the Red Soil and nutrients running out of the land is a serious problem, and many measures are being taken to prevent the Red Soil and nutrient salts from running out into the sea. In preventing the Red Soil from turning out, there have been hardware measures like modifying the incline of farming land, and software measures like covering the bare land up with plants taken, but such actions have various problems like "The cost is high" and "The farmhouse would not comprehend", and there is a need for an effective way. To solve these problems and to propose an effective action that would stop the Red Soil from running into the sea, we need to balance the values of the coral reef and the costs necessary to protect them, and we must make a relationship that both the users' and the constructors' social welfares reach maximum. Modeling on each phenomenon which is Ecology, Economic and Lifestyle of citizen etc, also grasping the whole structure of existent community as well, it demands building the system of ecological community management which has functions such as impact on imaginable community and eliminating citizen or social response. The evaluation index of community ecological management system is the rate of out flow prevention of Red Soil. And also, this can be expressed that the achieving level of public enterprises (farming development) as engineering measure and by the rate of operation of out flow prevention of Red Soil in terms of farming plan which is in fields. This research shows that is on the purpose of suggesting the system of community ecological management structure which will realize Red Soil outflow suppression by farming actions, and now, that draw attention as the structure of farming analysis management which is about catch cropping, and also it Introduced that the community ecological management system, which can realized without helping of the supporting plan that are funds or grant., the level of Red Soil out flow suppress. Also, on the bases of introducing effect, we suggest that supporting systems which are supporting plans for farming which are for improving catch cropping operation rate, or supporting systems which are funds and grants. |
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