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高High低Low19温熱環境の改善Improvement of Thermal Environments345生物多様性の促進Promotion of Biodiversity樹木による空気の浄化Air Purification by Trees気象条件をもとに大阪の夏期の体感温度と表面温度をシミュレート。高木による緑陰は表面温度では約15度、体感温度では約5度、緑がない場合と比較して温度が低くなった。高木による緑陰は体感温度とともに表面温度を下げ、ヒートアイランド現象の抑制にも寄与することが示唆される。We conducted a simulation of Osaka’s summer ambient and surface temperatures based on meteorological conditions. The shade provided by tall trees was found to lower the surface temperature by approximately 15°C and the ambient temperature by about 5°C compared to areas without greenery. This suggests tall trees not only reduce surface and ambient temperatures but also contribute to mitigating the heat island effect.体感温度（UTCI）シミュレーションAmbient Temperature (UTCI) Simulation表面温度シミュレーションSurface Temperature Simulation衛星画像の解析による樹林地データをもとに、現況とグラングリーン大阪完成後に予想される生態的ネットワークをbefore-afterで可視化。グラングリーン大阪は樹林率を12%まで上昇させ、周辺の動植物生息地ネットワークを形成することが期待される。Forest data obtained through analysis of satellite images was used to visualize the current ecological status and expected ecological network after the completion of Grand Green Osaka in a before/after comparison. Grand Green Osaka is expected to increase the rate of forest cover by 12 percent, creating a network of habitats for surrounding flora and fauna.グラングリーン大阪Grand Green Osaka樹林率シミュレーションForest Coverage Rate Simulation樹木による大気汚染物質（SO2、NO2、O3）の吸収量を集計し、大気の浄化効果を算出。幹線道路周辺等から発生する大気汚染物質の吸着など、グラングリーン大阪の樹木は地域の快適な生活環境の形成に貢献することが示唆される。The absorption of air pollutants (SO2, NO2, O3) by trees was calculated along with effects on air purification. The results show that trees in Grand Green Osaka, particularly those located near major roads and other pollution sources, play a vital role in absorbing pollutants and contributing to creating a comfortable living environment in the surrounding areas.ノースパークにおける樹木の密度とNO2吸収量イメージImage of Tree Density and NO2 Absorption in North Park大気汚染物質Air pollutants道路｜Roadうめきた公園｜Umekita Parkノースパークにおける樹木のフィルター効果と空気浄化のイメージImage of Tree Filter Effect and Air Purification in North Park森林浴効果Forest bathing effects水景｜WaterscapeNikken Sekkei has developed a tool called the “Greenery Gauge” for assessing the environmental value of green-ery, aiming to highlight its essential role. Five indices were established based on environmental benefits: reduction of greenhouse gases emissions, reduction of rainwater outflow, improvement of thermal environments, promotion of bio-diversity, and air purification by trees. The tool presents this value through data and visuals. The goal is to help create a society that benefits the global environment. More than 1,600 tall trees have been planted throughout the entire Grand Green Osaka development centering on Umekita Park, which covers 4.5 hectares. The greenery, shad-ing, planting, and water features work together to regulate the microclimate through evapotranspiration, creating cool spots in the city center. The park and surrounding private land jointly address environmental issues, such as reducing rainwa-ter runoff, sequestering CO2, and fostering biodiversity. The Greenery Gauge tool clearly highlights the contributions of Grand Green Osaka to the environment in visual form.20212027