臺灣博碩士論文加值系統

摘要位於宜蘭的福山實驗林，屬於暖溫帶雨林，主要組成樹種以樟科及殼斗科為主，屬於
楠櫧林帶(Machilus-Castanopsis Zone)，此地的年雨量超過2500公釐，而一年中的降雨
天數更是超出兩百天以上，氣候十分溫暖潮溼，也因此著生植物在試驗林中佔了相當的比
例。本研究在福山試驗林內選擇一面積約為1200平方公尺的樣區，隨機選取各DBH等級的
樹木樣本各4~6株，總共選擇22株樹木，除苔蘚以次樣本估計外，其它著生植物則全部剝
除稱重，以估計著生植物的生物量。樣區內，扣除DBH<5cm的小樹及灌木，共計樹木樣本1
42株，利用外插法估計樣區內著生植物總生物量。估計樣區內著生植物總乾重約為401.6k
g，據此本研究推算出福山試驗林內著生植物的生物量約為3346.7kg/ha，著生植物的養分
總含量為 (kg．ha-1) : N=42.41；P=1.9；Mg=5.52； Na=1.3；Ca=14.46；K=28.78。福
山試驗林內著生植物的生物量佔福山試驗林全林分生物量的1.2%~1.7%，但卻相當於地上
部葉片生物量的42.8%~69.6%，由於著生植物的所儲存的養分和喬木的葉片類似，屬於分
解較快的養分，因此本結果顯示出著生植物在福山森林生態系內的養分循環過程，可能佔
有重要的地位。關鍵詞: 福山試驗林、著生植物、生物量、養分含量

AbstractA Plot of 1200 ㎡was set up to reprent average epiphyte abundance in t
he Fushan hardwood forest. In the plot all epiphytes of 22 sample trees repres
enting every classes of DBH( without DBH<5cm) were removed and weighed to dete
rmine the composition, biomass, and nutrient content. Results from above were
extrapolated to estimate total biomass and nutrient content of epiphytes for t
he Fushan hardwood forest.According to the estimation, epiphyte biomass in thi
s forest is 3346.7 (kg/ha)，The nutrient capital (kg．ha-1) is N=42.41；P=1.9
；Mg=5.52； Na=1.3；Ca=14.46；K=28.78。Although epiphyte biomass constitutes o
nly 1.2~1.7 percent of total aboveground dry weight, It is equivalent to 42.8~
69.6 percent of dry weight of total foliage in the ecosystem.Since the nutrien
t content in the epiphyte and foliage is more readily available to other organ
isms in this ecosystem than that is held in woody components, epiphytes may pl
ay a greater role in ecosystem nutrient dynamics than those relative small bio
mass indicated. Key words : Fushan experimental forest, epiphyte, biomass, nut
rient content.