Soil respiration measurements at Beverly Swamp in Southern Ontario

This soil respiration (CO2 flux) data was collected as part of Megan Schmidt’s on-going PhD Program at the Faculty of Environment, University of Waterloo under the supervision of Professor Maria Strack. The purpose of the research is to improve our estimates of carbon fluxes and pools in temperate swamps towards assessing the contributions of this ecosystem to regional peatland carbon cycle. In particular, bi-weekly soil respiration was measured from 3 plots that were installed along a transect in the Fletcher segment of Beverly swamp (43.366N, 80.12W) in Hamilton from June 17, 2022 to October 02, 2023. The measurement was completed with closed opaque chamber (24 cm x 20cm ) approach and directly analyzed with LI-COR portable greenhouse gas analyzer (L1-7810). Soil respiration rate at this site ranged from 0 to 29 gCm-2day-1 depending on the time of the year, with peak values in summer and the lowest in winter. This dataset is expected to support peatland carbon flux inventories in the temperate region of Canada and can also be used for validating carbon flux estimate of ecological models in the area.

本土壤呼吸（CO₂通量）数据集由梅根·施密特（Megan Schmidt）在滑铁卢大学环境学院攻读博士学位期间采集，研究工作由玛丽亚·斯特拉克（Maria Strack）教授指导。本研究旨在优化温带沼泽的碳通量与碳库估算，以评估该生态系统对区域泥炭地碳循环的贡献。具体而言，研究于2022年6月17日至2023年10月2日期间，在汉密尔顿市贝弗利沼泽弗莱彻区段沿样带布设的3个样地中，每两周开展一次土壤呼吸测定，该点位坐标为43.366°N，80.12°W。本次测定采用密闭暗箱（24 cm × 20 cm）法，并通过LI-COR便携式温室气体分析仪（L1-7810）直接完成分析。该点位的土壤呼吸速率随季节波动，范围为0~29 gC·m⁻²·d⁻¹，夏季达到峰值，冬季处于最低水平。本数据集可用于支撑加拿大温带区域的泥炭地碳通量编目工作，同时也可用于验证该区域生态模型的碳通量估算结果。