The purpose of this research is to discuss the phenomena and temperature induced by the evapotranspiration from urban street greenery and pavement construction. We expect to achieve a good ventilation and temperature reduction with the improvement of planting and the pavement material. This research utilized Penman-Monteith equation to calculate the calorie needed for the evaporation of plant and realized the temperature reduction effectiveness by the evapotranspiration in the high temperature urban area via Computational Fluid Dynamics simulation. The results show that the planting has significant influence on the urban temperature reduction and the evapotranspiration of plant can ease off the urban high temperature situation. While under a windless condition, in compare with a windy environment which has better temperature reduction effect, the heat is difficult to dissipate due to the static status of the wind field. With regards to buildings, heat tends to accumulate at the windward and lee side of the building by eddy effect. For the future urban design code, the wind directing by plant and the ventilation of pedestrian wind field shall both being considered to alleviate the high temperature situation.
This paper proposes a study of a high strength, light weight and durable glass fiber reinforced polymer (GFRP) composite material that was used in a pedestrian bridge in Tai-Jiang National Park, Taiwan. In order to better understand the carbon footprint and carbon reduction of GFRP pedestrian bridge, the evaluated carbon footprint of the superstructure of the GFRP pedestrian bridge is compared with those of traditional construction materials, such as reinforced concrete (RC) and steel. The evaluation includes material production stage, transportation stage and construction stage of the carbon emission of GFRP pedestrian bridge. From the calculated carbon emission results, it is found that the GFRP pedestrian bridge reduced total carbon emission about 43% compared to an RC pedestrian bridge and up to 19% compared to a steel pedestrian bridge.
Valuing the built environment with the support of GIS and housing price model is an interesting topic because it connects the spatial thinking with economic concerns. In this paper, we chose the ordinary commercial housing in Xiamen City as our research targets, and the technology of GIS and Hedonic price model were used. Xiamen city is a typical coastal city, and from the research result, we found that the distribution of higher housing price was kept consistent with the coastal areas of Xiamen city. Besides, the average housing price of Xiamen inner-island (the old urban island area) was far higher than the outer-island. To reveal the degree of different spatial elements affecting housing price, we chose 21 variables (three types: location characteristic, structure characteristic and neighbourhood characteristic) and measured them in GIS platform. The Hedonic model showed that the main elements that influencing the price of commodity housings in Xiamen included Property Management Fee, Distance to Commercial Center, Distance to Hospital, Distance to Primary School, Near Village or Not, Near Green space or Not, Near kindergarten or Not. At the end of the paper, we provided three suggestions to balance the spatial variation of housing price in Xiamen City.
For the improvement of city landscape, vertical greening by plantation is one of the effective approaches. In the past few years, vertical greening has gained significant progress in both technological development and practical application. Thanks to the 2010 Flora Expo, vertical greening has made significant contribution to the landscape beautification in Taipei. Among various applications, temporary greening of fences surrounding construction sites has developed a unique landscape for Taipei city. In this paper, potential environmental benefits and application experience of vertical greening in Taipei city will be reviewed and discussed.