NITROUS-OXIDE EMISSIONS FROM FERTILIZED SOILS - SUMMARY OF AVAILABLE DATA
NITROUS-OXIDE EMISSIONS FROM FERTILIZED SOILS - SUMMARY OF AVAILABLE DATA
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DOI：
10.2134/jeq1990.00472425001900020013x
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发表时间：
1990-04-01
影响因子：
2.4
通讯作者：
EICHNER, MJ
中科院分区：
文献类型：
--
作者：
EICHNER, MJ
总结了 1979 年至 1987 年间农业和土壤科学文献中报道的 104 个田间实验中肥料产生的 N2O 排放数据的直接测量数据，并用于估算全球肥料产生的 N2O 排放量。尽管没有统计数据，但排放量与施肥类型和数量之间似乎存在趋势；现有数据并未表明排放量与特定土壤类型或农业系统之间的趋势。使用 N 肥料中 N2O 的比例和五种肥料类型的化肥消耗量估计值，估计在“采样期间”会释放 0.1 至 1.0 Tg N2O（平均 0.3；中值 0.2）。如果将这些估计值加倍以考虑采样期后的排放量以及排水和地下水中肥料损失的排放量，则 1984 年排放到大气中的 N2O-N 的预期范围将为 0.2 至 2.1 Tg N2O-N（平均 0.7；中值 0.5）。这一估计值的大小与最近的全球估计值一致。如果2000年全世界消耗100 Tg N化肥，则2000年全球向大气中排放的化肥排放量可能不会超过3 Tg N2O-N。估计1986年豆科作物种植田向大气中排放了23至315 Gg N2O-N。提出了未来的研究需求。
Direct measurements of fertilizer-derived N2O emission data from 104 field experiments reported in agriculture and soil science literature that were obtained between 1979 and 1987 were summarized and used to estimate worldwide fertilizer-derived N2O emissions. Although without statistical determination, there appears to be a trend between emissions and type and quantity of fertilizer applied; the available data does not indicate a trend between emissions and a particular soil type or agriculture system. Using the fraction of the N fertilizer evolved as N2O and fertilizer consumption estimates for five fertilizer types, 0.1 to 1.0 Tg N2O (avg. 0.3; median 0.2) were estimated to be released during the "sampling period". If these estimates are doubled to account for emissions after the sampling period and emissions from fertilizer lost in drainage water and groundwater, the expected range would be 0.2 to 2.1 Tg N2O-N (avg. 0.7; median 0.5) emitted into the atmosphere in 1984. The magnitude of this estimate is in agreement with recent global estimates. If 100 Tg N fertilizer are consumed worldwide in the year 2000, the global release of fertilizer-derived emissions into the atmosphere will probably not exceed 3 Tg N2O-N in the year 2000. It is estimated that 23 to 315 Gg N2O-N were emitted into the atmosphere from fields of cultivated leguminous crops in 1986. Future research needs were suggested.