National Groundwater Dependent Ecosystems Atlas

## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\n\n\nThe data set expresses the potential for groundwater interaction/use for river/spring/wetland ecosystems across Australia. It shows the ecosystems that rely on groundwater that has been discharged to the surface, such as baseflow or spring flow. The dataset was created by analysing all river/spring/wetland polygons contained in existing maps, and the outcome of the analysis identified which of those polygons were potentially interacting with groundwater. All river/spring/wetland polygons are considered to be accessing a source of water in addition to rainfall, and hence, they are all IDEs. The river/spring/wetland ecosystems were analysed to determine whether the additional water source was likely to be groundwater, water in the unsaturated zone or surface water. Where this additional information enabled a conclusion to be made on the potential of each river/spring/wetland ecosystem to be interacting with groundwater, the ecosystem was included in the GDE layer ('Reliant on surface expression of groundwater') and categorised as having either a high, moderate or low potential for groundwater interaction.\n\n\n\nThe data set expresses the potential for groundwater interaction/use of vegetation ecosystems across Australia. It shows the ecosystems that use groundwater from beneath the watertable or in the capillary zone. The dataset was created by analysing all vegetation polygons contained in existing maps, and the outcome of the analysis identified which of those polygons were potentially interacting with groundwater. The analysis initially identified vegetation polygons that were using another water source in addition to rainfall using remote sensing (MODIS and Landsat) data. These ecosystems are known as IDEs. The IDEs were then analysed further to determine whether the additional water source was likely to be groundwater, soil water or surface water. Where this additional information enabled a conclusion to be made on the potential of each vegetation IDE to be using groundwater, the ecosystem was included in the GDE layer ('Reliant on subsurface groundwater') and categorised as having either a high, moderate or low potential for groundwater interaction.\n\n\n\nA publicly available version of this dataset can be accessed via the following dataset: National Atlas of Groundwater Dependent Ecosystems (e358e0c8-7b83-4179-b321-3b4b70df857d). The National Atlas of Groundwater Dependent Ecosystems is available online at http://www.bom.gov.au/water/groundwater/gde/.\n\n## **Dataset History** \n\nThis History statement was written by the Bioregional Assessment team.\n\n\n\nRefer to methodology report\n\n\n\nhttp://www.bom.gov.au/water/groundwater/gde/reports.shtml\n\n\n\nShould also be noted that metadata related to each of the GIS layers in the Atlas is included in the GIS.\n\n## **Dataset Citation** \n\nBureau of Meteorology (2012) National Groundwater Dependent Ecosystems Atlas. Bioregional Assessment Source Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/68b3aa8b-1f19-4147-88dd-bfc1e052d3f5.

## **摘要**

本数据集及其元数据声明由第三方提供给生物区域评估计划（Bioregional Assessment Programme），并按原始提供形式呈现于此。

本数据集描述了澳大利亚境内河流/泉水/湿地生态系统与地下水相互作用或利用地下水的潜力。它展示了依赖于已排泄至地表的地下水（如基流或泉流）的生态系统。该数据集通过分析现有地图中包含的所有河流/泉水/湿地多边形生成，分析结果识别出哪些多边形可能与地下水存在相互作用。所有河流/泉水/湿地多边形均被认为除降雨外还获取其他水源，因此它们均为IDE。通过进一步分析这些河流/泉水/湿地生态系统，以确定其额外水源是否可能为地下水、非饱和带水或地表水。若这些额外信息能够得出每个河流/泉水/湿地生态系统与地下水相互作用的潜力结论，则该生态系统被纳入GDE（Groundwater Dependent Ecosystems，地下水依赖型生态系统）层（"依赖地表排泄的地下水"），并被归类为具有高、中或低地下水相互作用潜力。

本数据集还描述了澳大利亚境内植被生态系统与地下水相互作用或利用地下水的潜力。它展示了利用地下水位以下或毛细管带地下水的生态系统。该数据集通过分析现有地图中包含的所有植被多边形生成，分析结果识别出哪些多边形可能与地下水存在相互作用。分析首先利用遥感（MODIS和Landsat）数据识别出除降雨外还使用其他水源的植被多边形，这些生态系统被称为IDE。随后进一步分析这些IDE，以确定其额外水源是否可能为地下水、土壤水或地表水。若这些额外信息能够得出每个植被IDE利用地下水的潜力结论，则该生态系统被纳入GDE层（"依赖地下地下水"），并被归类为具有高、中或低地下水相互作用潜力。

本数据集的公开版本可通过以下数据集访问：国家地下水依赖型生态系统图集（National Atlas of Groundwater Dependent Ecosystems，编号e358e0c8-7b83-4179-b321-3b4b70df857d）。国家地下水依赖型生态系统图集可在线访问，网址为http://www.bom.gov.au/water/groundwater/gde/。

## **数据集历史**

本历史声明由生物区域评估团队撰写。

参考方法报告：http://www.bom.gov.au/water/groundwater/gde/reports.shtml

还应注意，与该图集内各GIS（Geographic Information System，地理信息系统）层相关的元数据已包含在GIS中。

## **数据集引用**

澳大利亚气象局（Bureau of Meteorology，2012）. 国家地下水依赖型生态系统图集. 生物区域评估源数据集. 查阅日期：2018年10月5日，网址：http://data.bioregionalassessments.gov.au/dataset/68b3aa8b-1f19-4147-88dd-bfc1e052d3f5.