ABSTRACT Cornell University Farm Services collects recyclable organics from various locations around the University including the dining halls and other food service establishments, the veterinary hospital, satellite dairy cattle, horse and chicken farms, cropping operations, and greenhouses. In 2013, they diverted approximately 6714 metric tons of organic residuals to the compost facility. A questionnaire was developed to get information from the facility in order to calculate greenhouse gas emissions for each step in this process including savings from carbon sequestration through compost use. It was found that in 2013, Cornell's compost facility emitted 104.6 metric tons carbon equivalent (MTCE) and saved 201.4 MTCE through compost use for a total carbon footprint savings of 96.7 MTCE/year (carbon negative). This equates to 0.0154 MTCE/tonne feedstock emitted and 0.03 MTCE saved through compost use for a total carbon footprint savings of 0.0146 MTCE/tonne fresh matter. These values are specific to this facility, but the questionnaire and calculations can be used by compost facilities to calculate the carbon footprint of composting.

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大学堆肥设施的碳足迹：康奈尔农场服务案例研究

摘要康奈尔大学农场服务从大学周围的不同地点收集可回收有机物，包括食堂和其他食品服务机构、兽医医院、卫星奶牛、马和养鸡场、种植业和温室。2013 年，他们将大约 6714 公吨有机残留物转移到堆肥设施中。制定了一份问卷以从设施中获取信息，以计算该过程中每个步骤的温室气体排放量，包括通过使用堆肥进行固碳所带来的节省。结果表明，2013 年，康奈尔大学的堆肥设施排放了 104.6 公吨碳当量 (MTCE)，并通过使用堆肥节省了 201.4 MTCE，总碳足迹节省了 96.7 MTCE/年（负碳）。这相当于 0。通过使用堆肥，排放 0154 MTCE/吨原料并节省 0.03 MTCE，总碳足迹节省 0.0146 MTCE/吨新鲜物质。这些值特定于该设施，但堆肥设施可以使用问卷和计算来计算堆肥的碳足迹。