2005-01-012024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/657830摘要：於臺灣北部選擇主要分佈樹種六種，包括針葉樹林之柳杉、扁柏、台灣杉，與闊葉樹林之相思樹、油桐、台灣櫸等，依不同樹種或不同年齡分佈區域內各採集3個土體，每個土體採集不同深度之土壤至母岩，分析土壤中之有機碳含量、總體密度(bulk density)及含石量(%)，並利用分析之結果估算土壤中的碳庫。另已建立土壤碳吸存採樣與分析方法標準作業規範(SOP)，目前已依計畫擬定土壤採樣及分析標準作業程序及現場採樣紀錄單，並依實際情況需要而做修正。初步結果顯示碳存量在樹種間有顯著差異(p < 0.05)，碳存量與樹齡大小無顯著相關。油桐碳存量最低，僅2 kg C/30cm/m2，4 kg C/50cm/m2，與4 kg C/m/m2。扁柏碳存量最高，碳存量11 kg C/30cm/m2，14 kg C/50cm/m2，與21 kg C/m/m2。其他樹種碳存量居中，6-8 kg C/30cm/m2，8-10 kg C/50cm/m2，與10-14 kg C/m/m2。由於各人工林之研究區域海拔高度與氣候條件上不同，結果顯示土壤碳存量與海拔高度呈正相關(p < 0.05)，有隨著年均溫度增加而減少和隨著年<br> Abstract: Six species of plantation forest species in northern Taiwan were selected to study the carbon pool of forest soils. Eight species include Acacia confuse, Aleurites fordii, Zelkova formosana, Cryptomeria japonica, Taiwania cryptomerioides, and Chamaecyparis obtusa Var. Formosana. Three different soil pedons were selected to calculate the spatial and temporal variation of different plantation time of each species, ranged from 10 to 50 years. The carbon storage of each pedon was calculated from surface to one meter or to the rock based on the data of soil carbon content, bulk density, fragment content of the soil. The standard operation procedure (SOP) of calculating the carbon pool of plantation forest soils is also established in this project. The preliminary result indicated that the carbon pool have significant differences among ten species (p < 0.05), but there are no significant differences among different plantation time of same species. The carbon pool is lowest in plantation forest soil of Aleurites fordii, only 2 kg C/30cm/m2, 4 kg C/50cm/m2, or 4 kg C/m/m2 and the carbon pool is highest in plantation forest soil of Chamaecyparis obtusa Var. formosana, 11 kg C/30cm/m2, 14 kg C/50cm/m2, or 21 kg C/m/m2。The carbon pool of other plantation species are between these two species, 6-8 kg C/30cm/m2, 8-10 kg C/50cm/m2, or 10-14 kg C/m/m2. The carbon pool is also significantly related to the elevation of plantation forest (p < 0.05). About 50% of carbon pool was stored in upper 30 cm of one meter pedon and about 70% of carbon pool was stored in upper 50 cm of one meter pedon of different species.人工林土壤碳存量時間與空間變異海拔plantation forest speciessoil carbon poolspatial and temporal variationelevation