摘要 : Nitrogen and carbon dynamics during the storage of cattle farmyard manure (FYM) throughout 52 days were evaluated in terms of mass balance, considering solid, liquid and gaseous components. The objectives were: (i) to quantify NH ... 展开 Nitrogen and carbon dynamics during the storage of cattle farmyard manure (FYM) throughout 52 days were evaluated in terms of mass balance, considering solid, liquid and gaseous components. The objectives were: (i) to quantify NH _3, N _2O, CO _2 and CH _4 emissions to supplement existing empirical evidence; (ii) to improve our understanding of the N and C transformations and the main factors that control these processes; and (iii) to provide the first measurement-based estimates of N _2 emissions from stored cattle FYM. Approximately 1.5% of the initial total N was emitted as NH _3 and 1.0% as N _2O. Losses of N _2 via denitrification were estimated to be greater than N losses via NH _3 and N _2O, at 5.2% of initial total N. The main C loss was as CO _2, accounting for ca. 10% of the initial total C content, with CH _4 emissions accounting for <1%. Heap temperature and rainfall strongly influenced gaseous emissions from this type of storage. 收起