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題 名 | 臺灣塔塔加地區雲杉與鐵杉林土壤中氮素礦化之比較研究=Comparisons of Soil Nitrogen Mineralization in Spruce and Hemlock Forest Stands of Tatachia Area, Taiwan |
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作 者 | 莊舜堯; 林珈吟; 王明光; | 書刊名 | 中華林學季刊 |
卷 期 | 36:3=132 2003.09[民92.09] |
頁 次 | 頁257-263 |
分類號 | 436.193 |
關鍵詞 | 塔塔加; 雲杉; 鐵杉; 氮的礦化作用; 硝化作用; 埋藏袋法; 室內孵育法; Tatachia; Spruce; Hemlock; N mineralization; Nitrification buried bags method; Aerobic incubation; |
語 文 | 中文(Chinese) |
中文摘要 | 氮素礦化及硝化作用是森林生態系中土壤養分轉化的重要過程,對森林的生產力有重要影響。本研究透過野外埋藏袋和室內孵育法來比較研究臺灣塔塔加高山地區雲杉和鐵杉森林土壤中氮素礦化與硝化作用及其差異。結果表明,雲杉土壤比鐵杉土壤有更高的礦化與硝化能力,同時兩者的季節變化也不同,雲杉土壤在春季有較強的礦化及硝化作用,而鐵杉則是在夏季。室內孵育結果表明,溫度對土壤礦化和硝化作用影響比較明顯,相對水分的影響就不是很明顯,但由於相近的地點,有相近的氣候條件,氣候不可能是造成兩種土壤礦化和硝化差異的主要因素,進一步的分析表明,土壤中的含氮狀況及土壤本身理化性質才是造成氮素轉化差異的主要原因。 |
英文摘要 | Nitrogen internal cycle, including nitrogen mineralization and nitrification, is important to forest ecosystem. The objective of this paper is to understand the difference of soil N mineralization and nitrification between hemlock and spruce stands through buried bags method and aerobic incubation experiments. The results showed that spruce soil had higher N mineralization and nitrification potentials than those of hemlock soil. Meantime, both soils had different seasonal variation in N mineralization and nitrification. The results of incubation experiments suggested temperature had higher potential to affect soil N mineralization than that of water content. Because both soils are located at the similar environmental position, the climate factors might not be the dominant factors influencing soil N mineralization and nitrification. Soil properties further analyzed indicated soil N content and its physical and chemical properties were the main factors resulted in the difference of N mineralization and nitrification of spruce and hemlock stands. |
本系統中英文摘要資訊取自各篇刊載內容。