Quantifying greenhouse gas emission reduction potential of a novel manure additive

在全球范围内，农业占温室气体（GHG）排放量的12%，主要来自动物粪便储存和土壤施用以及化肥的使用。在全国范围内，来自粪肥和农田土壤的排放量占加拿大农业年温室气体排放量5900万吨二氧化碳当量的一半以上。畜牧业生产产生的粪肥，如果在土地上适量施用，可以成为作物生产的重要资源，循环关键的养分，并提供有机质以维持土壤健康。然而，目前世界许多地区的粪肥生产远远超过当地土地的承受能力，已成为一个主要的环境威胁。不列颠哥伦比亚省（BC）的下弗雷泽河谷地区是一个重要的例子，养分过度应用，因为其密度的动物生产和相对较小的农业土地基地。已经研究了各种商业肥料添加剂对改变肥料成分和减少温室气体排放和气味的潜在影响，但结果不一致。不列颠哥伦比亚省大学的可持续农业景观实验室正在与Ocion水科学公司合作，评估他们开发的一种新型肥料添加剂的效益。 该项目将量化该产品在实验室条件下与乳制品和家禽粪便储存和土地应用一起使用时的温室气体减排潜力。 该项目的结果将用于确定有意义的温室气体减排所需的施用率。

Globally agriculture accounts for 12% of greenhouse gas (GHG) emission largely from animal manure storage and soil application and the use of fertilizers. Nationally, emissions from manure and farmland soils makes up more than half of agriculture's 59 Mt carbon dioxide equivalents of annual GHG emission in Canada. Manure from livestock production, when land applied in appropriate amounts, can be an important resource for crop production, cycling key nutrients and providing organic matter to sustain soil health. Currently however, manure production, in many parts of the world far exceeds local land capacity, and has become a key environmental threat. The lower Fraser Valley region of British Columbia (BC) is an important example of nutrient over application because of its density of animal production and relatively small agricultural land base. Various commercial manure additives have been studied for their potential effect of changing manure composition and reducing GHG emission and odor but the results have been inconsistent. The Sustainable Agricultural Landscapes lab at University of British Columbia is collaborating with Ocion Water Sciences to evaluate the benefits of a novel manure additive they have developed. The project will quantify the GHG emission reduction potential of this product when used with dairy and poultry manure storage and land application under laboratory conditions. Results of this project will be used to identify the application rates required for meaningful GHG reduction.