Wombat State Forest Flux Data Release 2024_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 (v3.4.17) 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.

本数据集包含利用涡度协方差技术（eddy covariance techniques）获取的地表与大气边界层间能量与物质交换的通量塔观测数据。数据采用PyFluxPro（v3.4.17）进行处理，处理流程参照Isaac等人（2017）的研究描述。PyFluxPro可生成最终的间隙填充数据集，并将净生态系统交换量（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）。
沃姆巴特州立森林样点为末次采伐于1980年的次生再生林，优势树种包括斜叶桉（Eucalyptus obliqua，俗称messmate stringybark）、辐射桉（Eucalyptus radiata，俗称窄叶薄荷桉）与红桉（Eucalyptus rubida，俗称烛皮桉），平均冠层高度达25米。林下植被以斑块状草本为主，土壤为粉砂质黏土覆盖于黏土层之上。该森林由可持续与环境部管理，管理措施涵盖选择性采伐与计划烧除制度。研究区气候归类为凉温带至地中海气候，冬季寒冷湿润（5—8月），夏季温暖干燥（12月—次年2月），气温区间为1至30℃，年平均气温12.1℃，年降雨量约871毫米（基于142年的长期观测平均值）。2010年至2016年间，研究团队利用搭载于拖车的移动实验室——傅里叶变换红外（Fourier transform infra-red, FTIR）光谱仪，获取了连续自动的土壤温室气体通量（CO₂、CH₄和N₂O）观测数据。观测高度最初为30米，2017年1月提升至33米。