生態農業：農業溫室氣體減量【生命科學系/林幸助特聘教授】
| 論文篇名 | 英文：Effects of pneumatophore density on methane emissions in mangroves 中文： 紅樹林呼吸根密度對於甲烷排放之影響 |
| 期刊名稱 | Forests |
| 發表年份,卷數,起迄頁數 | 2021, 12, no.314. |
| 作者 | Lin, Chiao-Wen; Kao, Yu-Chen; Lin, Wei-Jen; Ho, Chuan-Wen(何瓊紋); Lin, Hsing-Juh(林幸助)* |
| DOI | 10.3390/f12030314 |
| 中文摘要 | 雖然紅樹林是碳匯，但也可能會排放溫室氣體。我們在臺灣水筆仔與海茄苳紅樹林量測甲烷排放量，發現紅樹林土壤是甲烷重要排放源，尤其是有呼吸根的海茄苳，其甲烷排放量是水筆仔及鄰近泥灘地的50至100倍。複迴歸分析顯示土壤鹽度、酸鹼度、氧化還原電位及有機質皆會影響甲烷排放量，但是呼吸根密度可以解釋48%的海茄苳甲烷排放量。本研究發現紅樹林根結構會影響溫室氣體排放。 |
| 英文摘要 | Mangroves play an important role in carbon sequestration. However, mangroves can be sources of greenhouse gas (GHG) emissions. In this study, methane (CH4 ) emissions and related soil properties were determined in multiple mangroves in Taiwan, including Kandelia obovata and Avicennia marina mangroves. K. obovata possess prop roots, whereas pneumatophores are found in A. marina. Our results showed that mangrove soils were significant sources of CH4 emissions, which should be accounted for in mangrove carbon budgets. In particular, CH4 emissions in the A. marina mangroves were approximately 50- to 100-fold those of the K. obovata mangroves and the adjoining mudflats. Multiple regression analyses indicated that the soil salinity and pH in K. obovata mangroves and the soil redox potential and organic content in the mudflats were the key factors affecting CH4 emissions. However, the pneumatophore density alone explained approximately 48% of the variation in CH4 emissions in the A. marina mangroves. More pneumatophores resulted in higher CH4 emissions in the A. marina mangroves. Thus, compared with the assessed soil properties, the contribution of pneumatophores to the transportation of CH4 from soil was more significant. In addition to soil properties, our results demonstrated that the root structure may also affect GHG emissions from mangroves. |
| 發表成果與本中心研究主題相關性 | 量化自然生態系統溫室氣體排放量 |
