Floodplain tree stand condition by area 1988–2021

In the 2025 Sustainable Rivers Audit (SRA), the latest iteration of the Stand Condition Tool (SCT), paired with updated vegetation extent maps, was used to assess the condition of floodplain trees. From the SCT and associated inputs, an excel spreadsheet was output. This spreadsheet calculated the percentage of floodplain tree area in moderate-to-good condition across an annual time series from 1988–2021 for each of the 23 SRA valleys. These calculations were provided for the area of all floodplain trees, as well as for key individual species: river red gum, black box and coolabah. For more information on the methodology used in this analysis, please refer to EcoFutures final reports: \r\n \r\n* Sustainable Rivers Audit 3 – Contribution of the Basin Plan to the condition of selected environmental values by Gawne et al., (2025a) (prepared by EcoFutures).\r\n\r\n* Valley scale assessment of current condition and trend for environmental values in the northern Murray-Darling Basin by Gawne et al., (2025b) (prepared by EcoFutures). \r\n\r\n* Valley scale assessment of current condition and trend for environmental values in the southern Murray-Darling Basin by Gawne et al., (2025c) (prepared by EcoFutures). \r\n\r\nThis excel spreadsheet was used in the 2025 SRA to: \r\n\r\n* Undertake the visual assessment of trend using the full time series from 1988–2021\r\n\r\n* Describe the temporal patterns of change in area of individual tree species (e.g., river red gum, black box and coolabah) in moderate-to-good condition for each the 23 valley reports. \r\n

2025年可持续河流审计（Sustainable Rivers Audit, SRA）中，最新版的立地状况工具（Stand Condition Tool, SCT）结合更新后的植被覆盖范围图，被用于评估洪泛平原树木的健康状况。从SCT及其关联输入数据中，导出了一份Excel电子表格。该表格针对23个SRA流域，分别计算了1988至2021年逐年时间序列中，处于中等到良好健康状态的洪泛平原树木面积占比。本次计算覆盖两类范围：所有洪泛平原树木的总面积，以及河红桉（river red gum）、黑木桉（black box）和考拉巴桉（coolabah）这3种关键单一物种。

如需了解本次分析采用的方法学详情，请参阅EcoFutures出具的最终报告：

* 《可持续河流审计3——流域计划对选定环境价值状况的贡献》（Gawne等，2025a），由EcoFutures编制。

* 《墨累-达令盆地北部流域环境价值现状与趋势的流域尺度评估》（Gawne等，2025b），由EcoFutures编制。

* 《墨累-达令盆地南部流域环境价值现状与趋势的流域尺度评估》（Gawne等，2025c），由EcoFutures编制。

本Excel电子表格在2025年SRA中的应用场景如下：

* 基于1988—2021年完整时间序列开展趋势可视化评估；

* 针对23个流域报告，分别描述各单一树木物种（如河红桉、黑木桉、考拉巴桉）处于中等到良好健康状态的面积变化时序特征。