Wombat State Forest Flux Data Release 2023_v1

This release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer using eddy covariance techniques. Data were processed using PyFluxPro (v3.5.0) as described by Isaac et al. (2017). PyFluxPro produces a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER). Wombat State Forest site is a secondary re-growth forest that was last harvested in 1980. Dominant tree species are Eucalyptus obliqua (messmate stringybark), Eucalyptus radiata (narrow leaf peppermint) and Eucalyptus rubida (candlebark) with an average canopy height of 25 m. The understorey consists mainly of patchy grasses and the soil is a silty-clay overlying clay. The forest is managed by the Department of Sustainability and Environment and management includes selective harvesting and prescribed burning regimes. The climate of the study area is classified as cool-temperate to Mediterranean with cold and wet winters (May-August) and warm and dry summers (December-February) with temperatures between 1 and 30 °C and mean annual air temperature of 12.1 °C. Annual rainfall is approximately 871 mm (142 year long-term average). Coherent automated measurements of soil greenhouse gas fluxes (CO2, CH4 and N2O) were collected using a trailer-mounted mobile laboratory - Fourier transform infra-red (FTIR) spectrometer from 2010 to 2016. Measurement height was originally 30 m but increased to 33 m in January 2017.本数据集包含采用涡度协方差技术（eddy covariance techniques）获取的地表与大气边界层之间能量与物质交换的通量塔观测数据。数据按照Isaac等人（2017年）的方法，使用PyFluxPro（v3.5.0）完成处理。PyFluxPro可生成经过间隙填充的最终数据集，将净生态系统交换（Net Ecosystem Exchange, NEE）划分为总初级生产力（Gross Primary Productivity, GPP）与生态系统呼吸（Ecosystem Respiration, ER）两个组分。 沃巴特州立森林（Wombat State Forest）样地为1980年最后一次采伐后的次生再生林，优势树种为斜叶桉（Eucalyptus obliqua, messmate stringybark）、窄叶桉（Eucalyptus radiata, narrow leaf peppermint）和红桉（Eucalyptus rubida, candlebark），林分平均冠高25米。林下植被以斑块状分布的草本为主，土壤为粉质黏土覆盖于黏土层之上。该森林由可持续与环境部（Department of Sustainability and Environment）管理，管理措施包含选择性采伐与计划性火烧制度。研究区域的气候类型为凉温带至地中海气候，冬季寒冷湿润（5月至8月），夏季温暖干燥（12月至次年2月），气温区间为1~30℃，年平均气温12.1℃；年降水量约871毫米（基于142年的长期平均值）。2010年至2016年期间，研究团队使用搭载拖车的移动实验室——傅里叶变换红外光谱仪（Fourier transform infra-red spectrometer, FTIR），对土壤温室气体通量（CO₂、CH₄和N₂O）开展连续自动观测。观测高度最初为30米，2017年1月提升至33米。