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台灣中部天然闊葉林細根之動態研究

Fine Root Dynamics of Natural Hardwoods in Central Taiwan

摘要


本試驗從2011年6月至2012年5月,於台灣中部南投地區 (北東眼山、惠蓀林場及蓮華池),不同海拔天然闊葉林進行細根生物量之動態調查。細根月平均生物量以惠蓀林場最高 (2.02 Mg ha^(-1)),其次是蓮華池 (1.81 Mg ha^(-1)),最低則是北東眼山 (1.52 Mg ha^(-1))。細根置換速率也以惠蓀林場最高(0.91 year^(-1)),其次為蓮華池 (0.76 year^(-1)),最低為北東眼山 (0.68 year^(-1))。本試驗結果顯示,細根產量增加,置換速率提高,細根分解時間減少,將使得惠蓀林場森林生態系養分循環加速。

關鍵字

海拔 細根 細根置換 養分循環

並列摘要


The purpose of this study was to investigate fi ne root dynamics of three natural hardwoods, Mt. Peitungyen; Hui-sun experiment forest and Lienhauchi in central Taiwan from June 2011 to May 2012. Fine root biomass was the highest in Hui-sun experiment forest (2.02 Mg ha^(-1)), following in Mt. Peitungyen (1.81 Mg ha^(-1)) and the lowest in Lienhauchi (1.52 Mg ha^(-1)). Fine root turnover rate was the highest in Huisun experiment forest (0.91 year^(-1)), and the lowest in Mt. Peitungyen (0.68 year^(-1)). Results showed that increased fine root production and biomass resulted in fine root turnover increased, accelerated nutrient cycling in Hui-sun experiment forest.

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