頁籤選單縮合
題 名 | 溪頭地區二氧化碳通量之初探=Preliminary Study of CO₂ Flux in Xitou Area |
---|---|
作 者 | 賴彥任; 洪志遠; 魏聰輝; 張振生; 江博能; 衛強; 余瑞珠; 莊振義; 謝正義; 蔡明哲; 王亞男; | 書刊名 | 國立臺灣大學生物資源暨農學院實驗林研究報告 |
卷 期 | 26:3=277 2012.09[民101.09] |
頁 次 | 頁211-224 |
分類號 | 436.12 |
關鍵詞 | 全球暖化; 二氧化碳通量; 渦度相關法; 柳杉人工林; Global warming; Carbon dioxide flux; Eddy covariance method; Cryptomeria japonica plantation; |
語 文 | 中文(Chinese) |
中文摘要 | 由於人為排碳造成全球暖化議題,近幾年世人逐漸重視森林碳匯減緩大氣中CO_2濃度上升速度之重要性,以渦流相關法(eddy covariance)為理論基礎進行通量塔微氣象觀測,可達成森林生態系碳匯定量化。溪頭通量測站之XT00塔自2009年5月逐步進行觀測與調整。初步分析運轉結果顯示,XT00塔溪頭測站整年平均資料獲取率為89%,其中5-7月因梅雨及雷雨造成跳電過長而中斷觀測為資料遺漏之主因。經品質分析控制後,可感熱通量平均可用資料率為77%;潛熱通量平均可用資料率為62%;CO2通量平均可用資料率為62%。另由風場特性分析中顯示溪頭具由明顯山谷風特性,夜晚山風風速較高。初步檢視溪頭柳杉人工林全年均處於碳匯狀態,年均碳存量為12.94 ton C/ha/yr。 |
英文摘要 | Carbon sequestration is one of the forestry functions. This function would slow down the increasing speed of CO_2 concentration caused by human carbon emission and is an expected solution for human beings in the recent years. The micro-meteorological measurement of the flux tower applied the eddy covariance method can quantify the carbon sequestration of forestry ecosystem. The XT00 tower of CO_2 flux research has started its operation in May 2009 at Xitou. The results indicate the annual mean data acquisition ratio of flux system is 89%. The major source of data lost is the interruption of electric service caused by monsoon and thunderstorm during May and July. After the data assurance and quality control processes (QA/QC) process, the useful data ratios of sensible heat flux, latent heat flux and CO_2 flux are 77%, 62% and 62% respectively. The wind character analysis has showed significant pattern of mountain/ valley breeze and higher wind speed of mountain breeze during nighttime. The preliminary result of CO_2 flux "Cryptomeria japonica" plantation in Xitou has showed the annual net ecosystem exchange (NEE) is approximately -12.94 ton C/ha/yr. |
本系統中英文摘要資訊取自各篇刊載內容。