Air ions spatiotemporal distribution change in residential garden

• Main Authors: Wen-Huang Lin, 林溫凰
• Other Authors: Chen-Fa Wu
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/64029368749994554403

碩士 === 國立中興大學 === 園藝學系所 === 98 === Negative air ions pose direct influencely on the benefit to human bodies’ physiological and psychological health. In the aspect of physiological benefit, when anions in the air enter a human body, the resulted effects will effectively improve breathing function and facilitate hematopoietic function and so on. In the aspect of psychological benefit, anions can activate cerebral nerves, to facilitate the smooth message conveyance within the brain. Therefore, they can recover the regularity of central nerves and remove anxiety. According to the results from domestic and foreign literature review, the findings indicated that the explorations of the relationship between garden waterscape and negative air ions have not been undertaken up to now. The study had two purposes: 1. To understand the relationship between garden landscape design and the distribution of air ion concentration, provided as the reference for landscape design of residential garden; 2. To try out the waterscape type that has the ability to produce the highest anion concentration. The contents of this study included outdoor in-situ garden measurements and indoor experiments. In the outdoor part, after the one-year monitoring on the anion concentration in a residential garden was performed, the distributions of air ion concentration in spring, summer, autumn and winter were calculated, by means of Kriging method; also, the differences among them were compared. In the indoor experiments, the tests were performed respectively on the production of anion concentration in the waterscapes with different heights, widths, slopes, number of hierarchy, and number of impacting point. Besides, the experiment on air ion production through the sprinkle-nozzle in a spray irrigation system was performed. According to the experiment results, the relations between experiment variables and air ion concentration were constructed respectively. The research findings indicated: The sequence of average air anion concentration in the residential garden was summer > autumn> spring > winter, from high to low. Besides, if the distance was closer to the waterscape, the air anion concentration would be higher. According to the results of the indoor experiments, in terms of the waterscape type, the one with 1 impacting point, 3 hierarchies, 90cm in width, and 150cm in height will result in the highest quantity of anion production. In terms of the sprinkle-nozzle in a spray irrigation system, the place at 175×175cm was detected to have the highest anion concentration. By means of the application of the aforementioned results, the waterscape in the residential garden was revised to be 90cm in width, from the original 80cm, while its height was enhanced to be 150cm, from the original 120cm; thus, the anion concentration would be enhanced effectively. In the future, such a method can be practically applied to the improvement of anion concentration in gardens, so as to effectively construct a residential garden providing great health benefit.