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Taiwanese Rain Tree-Exploring the Relationship between temperature, solid temperature, humidity.
Organization(s):National Kinmen Senior High School
Country:Taiwan Partnership
Student(s):1. Liu, Yen-Ying
2. Tsai, Yun-Ying
3. Tsai, Jia-Yu
4. Jhang, Jing
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Teacher:Yu-Hsien Lee
Contributors:Siao, Jhong-Chun
Yu, Ting-Chun
Report Type(s):International Virtual Science Symposium Report
Protocols:Biometry (including Tree Height)
Presentation Poster:
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Optional Badges:I am a Collaborator, I am a STEM Storyteller
Language(s):English
Date Submitted:03/10/2022
The Taiwan Rain Tree is peculiar to Taiwan. In our campus, there are such special plants, coupled with the special geographical environment of Kinmen: dry and cold, with little rain, so we began to study the relationship between the color change of Taiwan Rain Tree leaves, temperature, and humidity, and then find out the factors that affect the change of leaf color.
By regularly observing the Taiwan Rain Trees in different locations of the school, understanding their color changes and falling leaves, etc., and comparing with meteorological data, we infer the impact of the environment on leaf drop and bract color changes. The main reason for the color change of its bracts is the anthocyanins in the bracts. Finally, we concluded that anthocyanins are affected by sunlight, temperature, and humidity. At low temperatures, the environment is conducive to the synthesis of anthocyanins. Under the same conditions, if the humidity is high, the temperature will be lower due to the small specific heat. Treatment in the shade can also increase the amount of anthocyanin synthesis.