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CO2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。

Carbon sequestration is one of the forestry functions. This function would slow down the increasing speed of CO2 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 CO2 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 CO2 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 CO2 flux Cryptomeria japonica plantation in Xitou has showed the annual net ecosystem exchange (NEE) is approximately -12.94 ton C/ha/yr.