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玉山國家公園塔塔加-玉山主峰步道沿線高山植物物候與氣候變遷影響之研究(3/3)

Phenology along Yushan Peaks Trail from Tatachia to Yushan Main Peak in Yushan National Park
中文摘要
開花結實物候是植物繁殖生活史重要的一環,影響授粉成功率,對氣候變化敏感,可作為氣候變遷的直接或間接指標。本調查於2016年3月至2018年11月在玉山國家公園之塔塔加-玉山主峰線步道,自塔塔加登山口起至玉山主峰,每月進行種子植物開花結實物候觀察。2013年2月極端高溫,影響冬末春初的開花物種數增多,但減少3-4月的開花物種數;2017年1月開花物種數高,除當年溫度較高外,還受到2016年的年尾高溫的影響;2018年5月受到溫度影響開花物種數較多。2016-2018年開花物候較異常現象本研究針對玉山杜鵑進行縮時攝影監測, 玉山杜鵑花芽於開花後1-2個月即開始分化,芽體發育至9月即可從外觀分辨出是花芽或葉芽,可以提供推測隔年玉山杜鵑的花況好壞的參考。
英文摘要
Yushan National Park is one of three representative alpine national parks in Taiwan. The flowering and fruiting phenologies were surveyed along the Yushan Main Peak Trail from Tatachia (alt. 2600 m) to the main peak of Mt. Jade (alt. 3952 m)from March, 2016 to September, 2017 for each month. A total 240 species were recorded, among them, 218 species were found flowering during the survey period. The numbers of flowering species increased with the temperature significantly, but not precipitation. Most of species bloomed in July to August, and the number of flowering species began decreasing in September. The most of fruiting species occurred in September, which was about one to two months later than the month which is the peak number of flowering species. With the elevation ascent, most of plants tended to bloom later than those of the same species distribute in lower altitudes. Compared with the flowering phenologies among different years in the same study area, the peak of flowering species was extended in 2013, 2016, 2017 and 2018 than 1987-1989. In addition, the abundances of flowering species were higher during the autumn in 2013, 2016, 2017 and 2018 than in 1987-1989. Global warming seems affected the flowering phenology of alpine ecosystem in Yushan National Park. We also conducted time-lapse monitoring photographs on Cirsium arisanense, C. tatakaensem, Potentilla leuconota, Primula miyabeana, Rhododendron pseudochrysanthum, and R. rubropilosum. And, the flowering accumulated temperature of R. pseudochrysanthum were calculated.
基本資料
  • 辦理方式: 委託研究
  • 執行機關: 國立中興大學
  • 年度: 107
  • 計畫經費: 790千元
  • 領域: 自然生態保育
  • 主持人: 曾喜育
  • 中文關鍵字: 塔塔加、玉山主峰、高山、氣候變遷、植物 物候
  • 英文關鍵字:Tatachia、 Yushan Jad main peak、alpine、plant phenology
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