Great Western Woodlands Flux Data Release 2022_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. It been processed using PyFluxPro (v3.3.3) 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 Great Western Woodlands (GWW) comprise a 16 million hectare mosaic of temperate woodland, shrubland and mallee vegetation in south-west Western Australia. The region has remained relatively intact since European settlement, owing to the variable rainfall and lack of readily accessible groundwater. The woodland component is globally unique in that nowhere else do woodlands occur at as little as 220 mm mean annual rainfall. Further, other temperate woodlands around the world have typically become highly fragmented and degraded through agricultural use. The Great Western Woodlands Site was established in 2012 in the Credo Conservation Reserve. The site is in semi-arid woodland and was operated as a pastoral lease from 1907 to 2007. The core 1 ha plot is characterised by Eucalyptus salmonophloia (salmon gum), with Eucalyptus salubris and Eucalyptus clelandii dominating other research plots. The flux station is located in Salmon gum woodland. For additional site information, see https://www.tern.org.au/tern-observatory/tern-ecosystem-processes/great-western-woodlands-supersite/ .

本数据集发布内容包含采用涡度协方差（eddy covariance）技术，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观测数据。本数据集已按照Isaac等（2017）所述的处理流程，使用PyFluxPro（v3.3.3）完成预处理，相关研究文献的DOI为https://doi.org/10.5194/bg-14-2903-2017。PyFluxPro可将通量塔采集的原始观测数据处理为最终的间隙填充数据集，并将净生态系统交换量（Net Ecosystem Exchange, NEE）拆解为总初级生产力（Gross Primary Productivity, GPP）与生态系统呼吸量（Ecosystem Respiration, ER）。如需了解更多关于数据处理层级的信息，请访问https://github.com/OzFlux/PyFluxPro/wiki。

西澳大利亚州西南部的大西部林地（Great Western Woodlands, GWW）占地1600万公顷，由温带林地、灌丛与桉灌丛（mallee）植被镶嵌组成。自欧洲殖民定居以来，该区域因降水变率大且缺乏易开采的地下水，基本保持了原生生态完整性。该林地具有全球独特性：全球范围内未见其他林地能在年平均降水量仅220mm的生境中发育。此外，全球其他温带林地大多因农业开发而高度破碎化并发生生态退化。大西部林地通量站点于2012年在克里多保护区（Credo Conservation Reserve）内设立。该站点地处半干旱林地，1907年至2007年间曾作为畜牧租赁用地运营。核心1公顷样地以三文鱼桉（Eucalyptus salmonophloia, salmon gum）为优势物种，其余研究样地的优势种为油桉（Eucalyptus salubris）与克莱兰桉（Eucalyptus clelandii）。通量观测站设于三文鱼桉林地中。如需获取更多站点相关信息，请访问https://www.tern.org.au/tern-observatory/tern-ecosystem-processes/great-western-woodlands-supersite/。