| Summary: | 碩士 === 國立聯合大學 === 建築學系碩士班 === 100 === The study discusses the effects of plants improve the outdoor micro-climate through Leaf Area Index(LAI). It chooses 8 point of plant LAI to measure the open space and leafy shade’s micro-climate parameter in National United University, Miaoli County, Taiwan and it individually measures the microclimate which included the temple, relatively humidity, wind speed black ball temple and the divergence of the open space and the space under the tree shadow.
The study result shows that the LAI average of eight points through the cover of the tree-crown is between 1.81 and 6.49 from May to July, and the temperature under the leafy shade is 2.7 degrees Celsius lower than the open space. Moreover, the average globe temperature under the tree shadow is lower 8.3 oC than the open space, and the average divergence is 477.1W/m2 lower than the open space. Moreover, the relatedly humidity is 13.6% higher than the open space.
From the Regression Analysis, it shows that when the LAI is 2.2, the Screening effect is 80 percentages, and the LAI is 3.8, the Screening effect raises to 90 percentages.
The result of the research proves that the LAI is changed with the immediately environment and time, and also the significant effect for radiation resistance and temperature decreasing. In conclusion, it can improve the living environment microclimate through the plant to avoid the divergence hurts human baby.
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