都市空間の緑景観評価のための立体緑視率の研究

抄録

The greenery in the field of vision is a rate of the area of the tree, the grass, the hedge, the planting box, and the wall greening to the area of field of view. It is used for the evaluation of green quantity in urban landscape. However, the greenery in the field of vision is not suitable for the regional area evaluation of the green landscape because it measures for the specific point. This research defined the three-dimensional greenery in the field of vision by a computer graphics using a voxel model, which extended the conventional greenery in the field of vision for the regional area evaluation. First, the longest viewing distance suitable for building the three dimensional field of view was estimated and we got the 100 m as optimal value. Then, we calculated the Pearson product-moment correlation coefficient for the p-value test between the proposed index and the surveyed conventional greenery in the field of vision for Shibuya, Tokyo. We recognize the positive correlation (|r| = 0.851 > 0.811 = r_0.05) between paired samples. Finally, we calculated the horizontal and the vertical distribution of the proposed index and we confirmed that the proposed index could conjugate for planning of the greening in urban space as a result.