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Estimates of Biomass and Carbon Storage in Two Taiwania Plantations of the Liukuei Experimental Forest
六龜試驗林雨台灣杉人工林生物量和碳儲存量之估算
摘要
以林試所六龜試驗林的台灣杉人工林爲對象，選取20和27年生兩林分，估算其生態系生物量、碳儲存量。由38株樣木之胸徑所建立之異率迴歸式得知樹體各部位及總生物量皆呈顯著相關，且兩林分可用同一組迴歸式估算。結果顯示，20年生台灣杉林木生物量爲155 ton ha^(-1)，27年生則爲169 ton ha^(-1)，生物量集中在樹幹。林下植物生物量爲3.2-4.8 ton ha^(-1)，大部分集中在地被植物。枝葉層生物量爲6.1-10.2 ton ha^(-1)。全林分碳儲存量，土壤佔最大量爲55-62%，喬木次之佔36-41%：土壤中約44-50%集中在0-15 cm處，喬木則約80%位於樹幹。與熱帶人工林比較，台灣杉全林分碳儲存量，林木部分略爲偏低，土壤的量則相近。
並列摘要
In Taiwania plantations of the Liukuei Experimental Forest managed by the Taiwan Forestry Research Institute, 2 stands aged 20 and 27yr were selected to estimate the biomass and carbon storage in the ecosystem. According to the allometric equation established by data of 38 harvested trees, the biomass of each component and the total biomass of the trees were highly significantly related to dbh. In addition, the biomass of these 2 stands can bees timated with a set of common equations. The estimated Taiwania biomass was 155 and 169 ton ha^(-1) for the 20- and 27-yr-old stands, respectively, and the major bio mass was in the boles. Biomass of the under- story vegetation was only 3.2-4.8 ton ha^(-1) and primarily accumulated in the ground coverage. Biomass in the litter layer was 6.1-10.2 ton ha'. In the whole stand, 55-62% of carbon storage was in the soil and 36-41% in trees. In soils, 44-50% of the carbon was stored at 0-15-cmdepth and in the trees 80% was in the boles. Compared with tropical plantations, the carbon storage of Taiwania trees is slightly lower, but the storage in soils is similar.