Cumberland Plain Flux Data Release 2021_v1

This data release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer in semi-arid eucalypt woodland using eddy covariance techniques. The dataset has been processed using PyFluxPro (v3.3.0) as described in Isaac et al. (2017), https://doi.org/10.5194/bg-14-2903-2017. PyFluxPro takes data recorded at the flux tower and process this data to a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER). For more information about the processing levels, see https://github.com/OzFlux/PyFluxPro/wiki.
The Cumberland Plain flux station is located in a dry sclerophyll forest. The Cumberland Plain Woodland is now an endangered ecological community that encompasses distinct groupings of plants growing on clayey soils. The canopy is dominated by Eucalyptus moluccana and Eucalyptus fibrosa, which host an expanding population of mistletoe. Average canopy height is 23m, the elevation of the site is 20m and mean annual precipitation is 800mm. Fluxes of water vapour, carbon dioxide and heat are quantified with the open-path eddy flux technique from a 30 m tall mast. Additional measurements above the canopy include temperature, humidity, wind speed and direction, rainfall, incoming and reflected shortwave and longwave radiation and net, diffuse and direct radiation and the photochemical reflectance index. In addition, profiles of humidity and CO2 are measured at eight levels within the canopy, as well as measurements of soil moisture content, soil heat fluxes, soil temperature, and 10-hr fuel moisture dynamics. In addition, regular monitoring of understory species abundance, mistletoe infection, leaf area index and litterfall are also performed. For additional site information, see https://www.tern.org.au/tern-observatory/tern-ecosystem-processes/cumberland-plain-supersite/ .

本数据集发布内容包含采用涡度协方差（eddy covariance）技术，针对半干旱桉树林地地表与大气边界层间的能量与物质交换开展的通量塔（flux tower）观测数据。本数据集已按照Isaac等人（2017）的研究方法，借助PyFluxPro（v3.3.0）完成处理，相关文献DOI为https://doi.org/10.5194/bg-14-2903-2017。PyFluxPro可接收通量塔采集的原始观测数据，并将其处理为最终的间隙填充数据集，同时将生态系统净交换（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）两部分。若需了解更多处理层级相关信息，请访问https://github.com/OzFlux/PyFluxPro/wiki。
坎伯兰平原通量站坐落于一片硬叶旱林（dry sclerophyll forest）中。坎伯兰平原林地目前已属于濒危生态群落，其涵盖了生长在黏质土壤中的多个特有植物类群。该林地冠层以马鲁桉（Eucalyptus moluccana）与纤维桉（Eucalyptus fibrosa）为优势物种，其上寄生的槲寄生种群正不断扩张。林冠平均高度为23米，站点海拔为20米，年均降水量达800毫米。研究团队借助架设在30米高测杆上的开路式涡度通量技术，对水汽、二氧化碳与热量通量开展定量观测。冠层上方的额外观测项目包括气温、空气湿度、风速与风向、降雨量、入射与反射短波辐射、入射与反射长波辐射、净辐射、散射辐射与直接辐射，以及光化学反射指数。此外，研究人员在冠层内的8个高度层开展了湿度与二氧化碳浓度廓线观测，同时还测定了土壤含水量、土壤热通量、土壤温度以及10小时燃料湿度动态变化。站点还定期开展林下植物物种丰度、槲寄生侵染情况、叶面积指数以及枯落物产量的监测工作。若需获取更多站点相关信息，请访问https://www.tern.org.au/tern-observatory/tern-ecosystem-processes/cumberland-plain-supersite/。