Cumberland Plain Flux Data Release 2024_v2

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).

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 23 m, the elevation of the site is 20 m and mean annual precipitation is 800 mm.
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.

本数据集包含利用涡度协方差技术（eddy covariance techniques）开展的地表与大气边界层间能量和质量交换通量塔观测数据。数据采用PyFluxPro（v3.4.17）处理，处理流程遵循Isaac等人（2017）的描述方法。PyFluxPro可生成最终的间隙填充数据集，并将生态系统净交换量（Net Ecosystem Exchange, NEE）划分为总初级生产力（Gross Primary Productivity, GPP）与生态系统呼吸量（Ecosystem Respiration, ER）。

坎伯兰平原通量站坐落于一片硬叶旱林之中。坎伯兰平原林地现为濒危生态群落，其涵盖了黏质土壤上生长的特有植物类群。林冠以Moluccan桉（Eucalyptus moluccana）和纤维桉（Eucalyptus fibrosa）为优势种，二者寄生的槲寄生种群数量正持续扩张。该站点平均林冠高度为23米，海拔为20米，年平均降水量达800毫米。

研究通过架设于30米高观测塔的开放式涡度通量技术（open-path eddy flux technique），量化了水汽、二氧化碳与热量的通量。林冠上方的额外观测项目涵盖气温、空气湿度、风速与风向、降雨量、入射及反射短波辐射和长波辐射，以及净辐射、散射辐射与直接辐射，同时还包括光化学反射指数（photochemical reflectance index）。此外，研究人员在林冠内8个高度层开展了湿度与二氧化碳廓线观测，并同步测定了土壤含水量、土壤热通量、土壤温度，以及10小时燃料湿度动态变化。同时，项目组还定期对林下物种丰度、槲寄生侵染情况、叶面积指数及枯落物沉降量进行监测。