Sampling frequency to estimate cumulative nitrous oxide emissions from the soil

Abstract: The objective of this work was to assess the influence of gas sampling frequency on the cumulative emissions of nitrous oxide (N2O) from the soil. Gas emissions were assessed over a period of two years (2014-2016), in four systems: eucalyptus forestry, crops, pasture, and native forest. The cumulative emissions of N2O were calculated at sampling intervals of 7, 14, and 21 days. The sampling intervals did not influence the final results of cumulative N2O emissions from the soil in the assessed systems.

摘要：本研究旨在评估气体采样频率对土壤一氧化二氮（nitrous oxide, N₂O）累积排放量的影响。实验于2014至2016年的两年周期内，在桉树林、农田、牧场及原生林四种系统中开展。研究分别以7天、14天、21天的采样间隔计算土壤N₂O的累积排放量。结果表明，在所评估的四类系统中，采样间隔并未对土壤N₂O累积排放量的最终结果产生影响。