School of Biosciences, University of Nottingham, College Road, Leicestershire, Loughborough, LE12 5RE, UK.
School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom Street, Merseyside, Liverpool, L3 3AF, UK.
Nat Commun. 2020 Jan 21;11(1):407. doi: 10.1038/s41467-020-14298-w.
Conversion of tropical peat swamp forest to drainage-based agriculture alters greenhouse gas (GHG) production, but the magnitude of these changes remains highly uncertain. Current emissions factors for oil palm grown on drained peat do not account for temporal variation over the plantation cycle and only consider CO emissions. Here, we present direct measurements of GHGs emitted during the conversion from peat swamp forest to oil palm plantation, accounting for CH and NO as well as CO. Our results demonstrate that emissions factors for converted peat swamp forest is in the range 70-117 t CO eq ha yr (95% confidence interval, CI), with CO and NO responsible for ca. 60 and ca. 40% of this value, respectively. These GHG emissions suggest that conversion of Southeast Asian peat swamp forest is contributing between 16.6 and 27.9% (95% CI) of combined total national GHG emissions from Malaysia and Indonesia or 0.44 and 0.74% (95% CI) of annual global emissions.
从热带泥炭沼泽森林转换为基于排水的农业会改变温室气体（GHG）的产生，但这些变化的幅度仍然高度不确定。目前，对于在排水泥炭地上种植的油棕，其排放因子并未考虑到种植周期中的时间变化，仅考虑了 CO 的排放。在这里，我们直接测量了从泥炭沼泽森林转换为油棕种植园过程中排放的温室气体，包括 CH 和 NO 以及 CO。我们的结果表明，转换后的泥炭沼泽森林的排放因子在 70-117 t CO eq ha yr（95%置信区间，CI）之间，其中 CO 和 NO 分别约占该值的 60%和 40%。这些温室气体排放表明，东南亚泥炭沼泽森林的转换占马来西亚和印度尼西亚的全国温室气体排放总量的 16.6%至 27.9%（95%CI），或占全球年排放量的 0.44%至 0.74%（95%CI）。
