生物炭應用於植生牆栽培介質之研究

Study on the Application of Biochar to the Cultivation Medium of Green Walls

謝博任(Bo-Ren Xie)；廖硃岑(Chu-Tsen Liao)

植生牆 ； 輕量栽培介質 ； 生物炭 ； 台灣原生植物 ； Green Walls ； Lightweight Cultivation Medium ； Biochar ； Taiwanese Native Plants

物業管理學會論文集

17屆（2024 / 06 / 01）

3 - 10

繁體中文;英文

因應氣候變遷的衝擊，全球各國均積極投入減緩碳排的技術中，生物炭的應用也成為新趨勢。植生牆具有環境調節和節能固碳的功能，是綠建築的重要手段之一。本研究透過實驗，探討生物炭對植物生長的影響，探討最適合植物生長的生物炭和栽培介質比例，藉此提高碳匯能力，為生物炭在植生牆的應用提供可參考的數據及建議。實驗挑選三種常見之輕量有機栽培介質，分別為稻殼、椰纖土及蛇木屑，並與碳化稻殼進行混合，搭配出13種不同比例的混合介質。以雞兒腸及雷公根作為實驗對象，觀察株高、冠幅、葉色等植栽生長指標的差異性，最後將觀測數據進行分析，並提出建議。實驗結果顯示，C1混和介質，以泥炭土、稻殼及碳化稻殼混和，比例為5：5：3，對植物生長效益高，且具有最輕的初始重量及最高的含水率。若將一棟寬為20m；高為30m的10層樓建築，採用一面植生牆介質均以C1混和介質代替一般土壤，估計可減少1600kg左右的建築負重，同時還能增加180kg生物炭之碳匯。因此本研究建議以C1混和介質比例作為植生牆，以達到輕量化和碳匯之目的。

In response to climate change, countries are investing in carbon reduction technologies, with biochar application becoming a new trend. Green walls, with their environmental regulation and energy-saving carbon sequestration functions, are essential for green buildings. This study explores biochar's effects on plant growth to determine the optimal biochar and cultivation medium ratios for enhancing carbon sequestration. The research provides data and recommendations for biochar use in green walls. The experiment used three common lightweight organic cultivation media: rice husk, coconut fiber, and snake wood chips, mixed with carbonized rice husk to create 13 different mixed media ratios. Chicken intestines and Devil's ivy were used as subjects to observe plant growth indicators such as height, canopy width, and leaf color. The data were analyzed, and recommendations were made. Results showed that the C1 mixed medium, consisting of peat soil, rice husk, and carbonized rice husk in a 5:5:3 ratio, provided the highest benefits for plant growth, with the lightest initial weight and highest water content. If a 10-story building (20m wide and 30m high) used a green wall with C1 medium instead of regular soil, the building load could be reduced by about 1600 kg, while increasing carbon sequestration by 180 kg of biochar. Thus, the C1 medium ratio is recommended for green walls to achieve weight reduction and carbon sequestration.