%0 Dataset
%T Datasets: Ditch emissions partially offset global reductions in methane emissions from peatland drainage
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/81050497-b359-4c7f-a390-18c30061b01a
%W NCDC
%R 10.5281/zenodo.13948558
%A Dezhao Gan
%K Ditch discharge;peatland;methane
%X Peatlands, as an important global carbon sink, are often affected by drainage activities. Although drainage activities have generally reduced methane emissions, the ditches built along with drainage have become potential methane emission hotspots. However, the offsetting effect of ditches on methane emissions is not yet clear in different climate zones and land use types. To address this issue, we conducted a global meta-analysis and collected annual methane emissions data from near pristine peatlands, drained peatlands, and their canal land portions. The research results indicate that the area of ditches accounts for about 3.8% (95% confidence interval: 3.1-4.4%) of all drained peatlands, and their total methane emissions reach 695 (511-898) kilograms per hectare per year, with the highest emissions in (subtropical) regions. From a global perspective, channel emissions offset approximately 12% (10-14%) of methane emissions from peatland drainage.