Host: The Association of Japanese Geographers
1. Preface Illegal dumping waste becomes the problem. There are many wastes as for the illegal dumping in the river, we compare it with industrial waste and are hard to identify a person of disposal, and the regulation is difficult. Therefore, in the self-governing body of the coast and the community of the coastal area, administration, local inhabitants, the police cooperate and, for the issue of illegal dumping to the river, try for prevention of the illegal dumping. But there is no end to illegal dumping under the present conditions. 2. An investigation method The data collection method of the illegal dumping waste assumes the field work that I used the GPS receiver in the object river for basics. We referred to collection / data and an existing study about the illegal dumping, a classification method of the garbage of the Inukami abandonment area self-governing body that we arranged and set the candidate of the factor to be concerned with the illegal dumping place to use for analysis, a classification standard of the illegal dumping waste. We make the illegal dumping map which used Google Earth and ArcGIS based on these position data. From this illegal dumping map, we analyzed an outbreak factor of geographical illegal dumping waste according to a kind of the garbage. We did the object range with sections from the Inukami river river mouth to the irrigation of Kanaya equal to the fan top share of the alluvial fan and did position / kind / the outskirts situation of the illegal dumping waste with an investigation item. 3. A result / consideration We confirmed 1,270 points of samples that it seemed that we were related to illegal dumping. 88 points are signboard, illegal dumping preventive measures quality of the surveillance camera among 1,270 points of samples. In addition, the illegal dumping point that we confirmed is 1106 spots. Most of the illegal dumping waste which we confirmed in a field work were scattering-related garbage. Though a signboard and the fence of the anti-illegal dumping measure are installed in the scattering-related garbage, it is often that it is abandoned illegally. In addition, we were able to confirm the section where illegal dumping was concentrated. Even if a drink container lasted in a whole terms of reference, it was abandoned a lot illegally. It seems that the most were abandoned by a passerby. In addition, the illegal dumping was easy to occur from a bridge so as to be near and is hard to have come to occur so as to leave it. However, we objected with these, and we hardened, and, as for the slightly bigger illegal dumping waste such as a household appliance, a bicycle, the tire, the bottoms of the bridge were dumped in the specific place illegally. We can choose the neighborhood of bridge as an illegal dumping outbreak factor when we consider a geographical outbreak factor of the illegal dumping in the river from an illegal dumping map. It is the present conditions that most illegal dumping measures do not do a meaning so that it is almost scattering of the illegal dumping to be able to put in the vicinity of a bridge-related garbage, and it tends to be dumped illegally though illegal dumping measures are put about the scattering-related garbage. On the contrary, we can choose the neighborhood of public accommodation as a prevention of illegal dumping factor. In the range where public accommodation was next to, there was comparatively little number of illegal dumping waste. The illegal dumping avoids the public eye, and it is performed, but the public accommodation is a resort, and it is thought that the neighborhood of public accommodation has little illegal dumping. In addition, we can choose the anti-illegal dumping measure thing as a prevention of illegal dumping factor, but though illegal dumping measures are put about the scattering characteristics garbage such as drink relations or food relations, it is dumped illegally, and future measures are expected.
