關刀溪森林生態系殼斗科植物之物候週期

The Phenological Phases of Fagaceae in the Guandaushi Forest Ecosystem

本研究於2000年9月至2003年8月間觀測關刀溪森林生態系內12種殼斗科植物的物候期，其中僅栓皮櫟是落葉性植物。三年之調查結果發現，抽芽期大多在2至4月。開花期則較為歧異，其中反刺櫧、川上氏櫧、青剛櫟、三斗石櫟、短尾葉石櫟、南投石櫟、菱果石櫟與栓皮櫟8種每年開花一次，火燒柯、小西氏石櫟與石櫟3種一年內有兩次或兩次以上的開花期，而圓果青剛櫟在2001與2002年分別開花2次及1次。所有觀察物種的果熟期均在8至12月，而落果期都在9月至隔年2月間。關刀溪森林生態系中殼斗科植物所呈現的物候週期為一年一循環或兩年一循環。 Phenological phases of 12 species of trees belonging to the family Fagaceae in Guandaushi forest ecosystem of Taiwan were investigated monthly from September of 2000 to August of 2003. Quercus variabili was found to be a deciduous tree, whereas the other 11 species were the evergreen trees. All the species had the same budding person from February to April but differed in blooming season. Eight species, Castanopsis eyrei, Castanopsis kawakamii, Cyclobalanopsis glauca, Pasania hancei, Pasania harlandii, Pasania nantoensis, Pasania synbalanos, and Quercus variabilis, bloomed once a year, while the other three species, Castanopsis fargesii, Pasania konishii, and Pasania glabra, bloomed twice to several times a year. Fruits of all the species became mature in August to December and fell in September to next February. The phenological phases of Fagaceae showed a cycle per year or per two years.