Crop raiding by Japanese macaque have not remarkably reduced in spite of various defensive measures. Cause of this problem is mainly inferred from habitat loss. To define appropriate arrangement of new natural habitat, we investigated relationship between crop damage level and the distance from four spatial factors to field. Then, we developped a logistic regression model to estimate synthetically the spatial factors as risk factors. As the result, we showed that long distance from forest and large river, and short distance from wide road would lead to low damage level. Using this model, we calculated the distance between field and forest in low risk. We concluded that new natural forest should be arranged at the place within home range of pest troops that is more 40 meters away from field.
by Japan Society of Civil Engineers