| 摘要 |
This study was conducted to investigate the air oxygen content inside and outside a Phyllostachys edulis forest in Qishan Forest Park throughout all four seasons. (1) Regarding the overall annual variation in oxygen content in both environments, comparative analysis of the annual average oxygen concentration showed that the average inside the forest was 22.13%, while the value outside it was 21.39%. The annual average oxygen concentration inside the forest was 3.34% higher than that outside the forest. (2) Regarding the seasonal variation in oxygen content at both sites, the oxygen concentration inside the forest was consistently higher than that outside the forest in all four seasons. The oxygen concentrations inside the forest were 22.1%, 21.9%, 21.8%, and 21.5% in spring, summer, autumn, and winter, respectively, while outside the forest, they were 22.0%, 21.8%, 21.7%, and 21.4% for the same seasons, respectively. (3) The diurnal variation trends of oxygen concentration at both sites were similar throughout all four seasons, exhibiting a single-peak and double-trough curve pattern. The peak period occurred at 13:00 in spring, summer, and winter, and at 9:00 in autumn. The trough periods were observed at 7:00 and between 21:00 and 23:00 or at 5:00. |
