Abstract
In general, the ecological footprint (EF) has been known as an index for the environmental impact of human activities. First, the article has discussed the significance of EF for a land-use planning tool and has verified that the land-use intensity make a contribution to the improvement of environmental impact. Then, the study has proposed the Floor-Area-Ratio (FAR) as a density indicator and has presented a model to examine the environmental impact. The feature of the model is a non-linear relationship between FAR and the improvement of environment. The model has been applied to some districts in Japan and its applicability to the environmental planning has been discussed. The fact findings have indicated that the high density of land-use is not effective for the improvement of environmental.
