農田水利生態工程減碳效益評估方法之建立

The Establishment of the Carbon Reduction Benefit Assessment Method in Irrigation Ecological Engineering

吳振發(Chen-Fa Wu) ； 林裕彬(Yu-Pin Lin) ； 朱宏杰(Hone-Jay Chu) ； 黃韜(Tao Huang) ； 蕭戎雯(Jun-Wen Hsiao)

《農業工程學報》 58卷1期 (2012/03) Pp. 33-46

https://doi.org/10.29974/JTAE.201203.0003

摘要

研究已證質農田水利生態工程具備灌溉與生態功能，近年來學者開始思考如何在工程過程中減少二氧化碳排放量，但長久以來缺乏一有效方法進行估算，有鑑於此本研究目的即在於建立農田水利生態工程二氧化碳計算及減碳效益評估方法，並以射馬干圳生態池工程為例，驗證方法之有效性，以及生態工程之滅碳效益。二氧化做計算方法是採用工程生命週期的方式進行，分別估算生產、運輸、施工階段的二氧化碳排放章，而完工階段則是計算植生工程的固碳量。減碳效益評估方面，分別計算生態工程、模擬之傳統工法兩者二氧化碳排放量，並比較差異量後計算出二氧化碳削減量，驗證生態工程之二氧化碳削減效益；同時，以工程般平衡的觀念，驗證相對於傳統工程，生態工程達到碳平衡的時間效益。研究結果發現工程材料生產與運輸階段產生的碳排放量較高，分別佔總工程碳排放車的49.8%與33.7%；可相較於模擬之傳統工法，採用生態工程可有效降低碳排放最，於生產階段可削減64.2%，運輸階段削減6.1%，施工階段削減46.6%，總削減量達51.4%，至於工程完工階段，結果顯示植物的年總固碳量為16310公斤，相較於傳統工程，可大幅增加固碳量。除此去外，生態工程需6.98年達到工程碳平衡，傳統工程則需14.37年。綜合言之，本研究提出的農田水利生態工程二氧化碳計算及減碳效益評估方法，不僅能夠有效的估算出農田水利生態工程於材料生產、運輸、施工階段之碳排放量，更可估算出工程完工後植物的固碳量，以及評估出生態工程相較於傳統工法之減碳效益、達碳平衡之時間效益、減碳之經濟效益等。未來此方法可進一步發展出排碳量計算、滅碳效益評估軟體，提供農田水利工程人員使用。

關鍵字

生態工程 ； 生命週期法 ； 減碳效益評估 ； 射馬干圳

並列摘要

Studies have proved that the ecological engineering has the function of irrigation and ecology. In recent years, scientists start to think that how to reduce the emission of carbon dioxide, but long it lacks of an effective method to do estimates. The purpose of this research is to establish a method of calculating carbon dioxide emission in an agricultural irrigation ecological engineering and the method of carbon reduction benefit assessment. Besides, as Shemagan canal for an example, verify the effectiveness of the method and the benefit of carbon reduction. The calculation of carbon dioxide conducts by the life-cycle engineering method, calculates separately by the material production, transportation and construction stage. And in the completion stage, we calculate the carbon sequestration produced by vegetation engineering.Results show that the carbon emission is higher in the stage of material production and transportation, make up 49.8% and 33.7% of total carbon emission respectively; in comparison with the traditional method, ecological engineering could efficiently reduce carbon emission, reduce by 64.2% at the production stage, 6.1% at the transportation stage, 46.6% at the construction stage, the total reduction amounted to 51.4%. At the completion stage, results show that the total annual carbon sequestration of plants is 16310 kg, in comparison with the traditional method, and it could significantly increase the amount of carbon sequestration. In addition, ecological engineering reach to carbon balance in 6.98 year, traditional engineering should take 14.37 year. To sum up, the method of carbon dioxide calculation in irrigation ecological engineering and benefit assessment of carbon reduction provided by our study, not only estimate the carbon emission at material production, transportation and construction stage of irrigation ecological engineering, but also estimate the carbon sequestration of plants after the project completed, and assess the benefit of carbon sequestration of ecological project relative to traditional method, the temporal benefit of carbon balance, the economic benefit of carbon reduction. The method could extend to carbon emission calculation, carbon reduction benefit assessment software, provide for irrigation staff.

並列關鍵字

Ecological Engineering ； Life Cycle Assessment ； Carbon Reduction Analysis ； Shemagan Canal