Comparison of physical and chemical properties of surface soils grown with Tsuga chinensis var. formo-sana, Yushania niitakayamensis and Miscanthus sinen-sis in Ta-Ta-Chia mountain area.

本研究主要比較塔塔加高山地區鐵杉、玉山箭竹及高山芒三個樣區表土0-5cm, 5-10cm 及10-15cm 三層之土壤水分含量、土壤容重、有機質、可交換性鉀、鈣、鎂及有效磷、pH 值 等土壤物理與化學性質有無差異，並供後續土壤動物組成與其相關性之探討。1998 年11 月進 行土壤採樣，帶回實驗室分析。在0-5cm 、5-10cm 、10-15cm 三層表土土壤中之土壤容重、含 水率及有機質和可交換鉀、鈣、鎂及有效磷等，在鐵杉林、玉山箭竹及草原間均有顯著差異; 只有pH 值在上述三樣區三種不同深度的土壤中沒有顯著差異。This study collected soil samples in November of 1998 from three plots (dominated by Tsuga chinensis var. formosana, Yushania niitakayamensis and Miscanthus sinensis, respectively) in Ta-Ta-Chia mountain area to investigate soil moisture, bulk density, pH, organic matter, ex-changeable Ca, K, Mg and available P of three depths (0-5, 5-10 and 10-15 cm). The results of this study will be used in the following study of soil fauna. At soil depth of 0-5 cm, soil bulk density, exchangeable Ca, K, Mg, available P, organic matter, soil moisture differed significantly among Tsuga, Yushania and Miscanthus types. At soil depth of 5-10 cm, soil bulk density, soil moisture, organic matter, exchangeable Ca, Mg, K and available P differed significantly among three vegetation types. At soil depth of 10-15 cm, soil bulk density, soil moisture, organic matter, exchangeable Ca, K and available P differed significantly among three vegetation types. There was no significant dif-ference in pH among three vegetation types