屏東平地造林地二氧化碳通量塔樣區枯落物動態之研究

Study of Litterfall Dynamics of Afforestation in the Plain Area in Pingdong CO_2 Flux Research Site

余瑞珠(Jui-Chu Yu) ； 王亞男(Ya-Nan Wang) ； 江博能(Po-Neng Chiang) ； 蔡明哲(Ming-Jer Tsai) ； 蔡僑隆(Ciao-Long Cai)

《國立臺灣大學生物資源暨農學院實驗林研究報告》 26卷3期 (2012/09) Pp. 201-209

https://doi.org/10.6542/EFNTU.201209_26(3).0004

摘要

枯落物是森林生態系物質流動與養分循環中重要的一部份，而臺灣對平地造林枯落物動態仍不清楚。本研究目的以屏東平地造林地二氧化碳通量塔研究樣區範圍進行枯落物動態研究，以了解其枯落物量、組成及季節變化。經過一年（2011）的監測，其間共收集了36次，年枯落物量為2,912 kg ha-1。月平均為243 kg ha^(-1)mon^(-1)，並介於12至575 kg ha^(-1)mon^(-1)間，其中組成主要為落葉，佔23.28 %-92.69 %，小枝條次之，佔5.94 %-17.84 %，其餘為樹皮、花、果、蟲、其他物質。總枯落物最大量出現在12月，並與最低量6月相差約47倍，其原因主要是受降雨量減少，植物減少蒸散作用，致使枯落物量增加。

關鍵字

平地造林 ； 枯落物

並列摘要

Litterfall is an important part of material flow and nutrient cycle in the forest ecosystem, but the litterfall dynamics of afforestation in the plain area is still obscure in Taiwan. The objective of this study was investigating litterfall dynamics of afforestation in the plain area in Ping dong CO_2 flux research site to understand amounts, composition and seasonal change of litterfall. Total amounts of litterfall, which collected 36 times in one year(2011), were 2,912 kg ha^(-1). Mean month litterfall was 243 kg ha^(-1)mon^(-1), ranged from 12 to 575 kg ha^(-1)mon(-1), of which 23.28%-92.69% was composed of foliar, 5.94-17.84% was composed of branch, and others such as bark, flower, fruit, bug etc. The largest amount of litterfall occurred in December, 47 times larger than the smallest amount in June. The precipitation decreased and therefore plant decreased evaporation, resulting in litterfall increase.

並列關鍵字

Afforestation in the Plain Area ； litterfall