Extent of IUCN Global Ecosystem Typology ecosystem functional groups across the marine, freshwater and terrestrial realms in Australia: pre-1750 and 2010-11 to 2023-24

The extent data products in this data collection comprise spatial data describing the distribution of IUCN GET EFGs across the Ecosystem Accounting Area (EAA) defined for national ecosystem accounts for Australia. \n\nThe data provided are spatial data in the form of GeoTiff raster files for the majority of IUCN-GET EFGs, with the exception of the Artesian springs and oases EFG (F2.8) within the Lakes biome (vector point data). For all terrestrial EFGs the data cover the pre-1750 time period, as well as an annual time series from 2010–11 to 2023–24.\n\nThe data products comprise raster files with one additional vector file:\n•\tFifteen raster files with a spatial resolution of 100 m represent the majority of EFGs at 15 different time periods: a reference extent (pre-1750 or pre-European), and 14 annual extents from 2010–11 to 2023–24.\n•\tA single raster file with a spatial resolution of 250 m represents the shelf ocean waters biome for a single time period (2023).\n•\tA single raster file with a spatial resolution of 250 m represents the pelagic ocean waters biome for a single time period (2023).\n•\tA point vector representing artesian springs and oases within the lakes biome for a single time period (2022).\n\nThese data products meet these specifications:\n•\tSpatial reference: GDA2020 / Australian Albers (EPSG:9473)\n•\tRaster file format: GeoTiff \n•\tSpatial extent: xmin: -2253900, xmax: 2949600, ymin: -5218400, ymax: -929100.\n\nThis collection also contains cross-walk files that were used to develop the data products. Cross-walk files define the output EFGs for each ecosystem within source or derived datasets.\n\nThese data align with other data prepared for Australia under the NEAP including for biodiversity, ecosystem condition and ecosystem services.\n\nLineage: Data processing is detailed in the method report:\nMacfarlane C, Liu N, Newnham GJ, Richards AE and Tetreault-Campbell S (2025) Methods for developing extent of IUCN Global Ecosystem Typology ecosystem functional groups across the marine, freshwater and terrestrial realms in Australia: pre-1750 and 2010-11 to 2023-24. A report for the National Ecosystem Accounting Project. CSIRO, Australia.\n\nThe data are generated using national-scale input datasets for Australian ecosystems, along with additional supporting datasets. Both source and derived datasets were combined into a spatial layer, with each pixel allocated to a single EFG across the EAA, using the Simple Standard for Sharing Ontology Mappings (Matentzoglu et al. 2022) for cross-referencing ecosystem entities from national datasets to the EFGs. These data align with other data prepared for Australia under the NEAP including for biodiversity, ecosystem condition and ecosystem services.\n\nPlease see 'Related links - Publication' on this page for a URL for the technical methods that describe the methods for producing the data, the data, data quality statement and the folder structure of this collection.\n

本数据集集合中的范围数据产品，为描述国际自然保护联盟（International Union for Conservation of Nature, IUCN）全球生态系统分类法（Global Ecosystem Typology, GET）生态功能组（Ecosystem Functional Groups, EFGs）在澳大利亚国家生态系统核算所划定的生态系统核算区（Ecosystem Accounting Area, EAA）内分布的空间数据。

本次提供的多数IUCN-GET生态功能组数据为GeoTiff栅格格式的空间数据，仅湖泊生物群区中的自流泉与绿洲生态功能组（F2.8）采用矢量点数据形式。所有陆地生态功能组的数据覆盖1750年以前的时空范围，以及2010-11至2023-24的年度时间序列。

本数据产品包含多份栅格文件与1份矢量文件：
• 15份空间分辨率为100米的栅格文件，对应15个不同时段的多数生态功能组范围：1份参考时段（1750年以前，即欧洲殖民前），以及2010-11至2023-24的14份年度范围数据。
• 1份空间分辨率为250米的栅格文件，对应单一时段（2023年）的陆架海洋水域生物群区范围。
• 1份空间分辨率为250米的栅格文件，对应单一时段（2023年）的远洋海洋水域生物群区范围。
• 1份点矢量数据，对应单一时段（2022年）湖泊生物群区内的自流泉与绿洲分布。

本数据产品符合以下技术规范：
• 空间参考系：GDA2020 / 澳大利亚阿尔伯斯投影（EPSG:9473）
• 栅格文件格式：GeoTiff
• 空间范围：x最小值：-2253900，x最大值：2949600，y最小值：-5218400，y最大值：-929100。

本数据集集合还包含用于生成数据产品的交叉映射文件（cross-walk files），此类文件用于定义源数据集或衍生数据集中各生态系统对应的输出生态功能组。

本数据集与澳大利亚国家生态核算项目（National Ecosystem Accounting Project, NEAP）下编制的其他数据（包括生物多样性、生态系统状况与生态系统服务相关数据）保持一致。

数据溯源：数据处理流程详见下述方法报告：Macfarlane C、Liu N、Newnham GJ、Richards AE与Tetreault-Campbell S（2025）《澳大利亚海洋、淡水与陆地界别国际自然保护联盟全球生态系统分类法生态功能组范围编制方法：1750年以前及2010-11至2023-24时段》，为国家生态核算项目报告，澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）出品。

本数据集基于澳大利亚生态系统的国家级输入数据集与额外配套数据集生成。通过本体映射共享简易标准（Simple Standard for Sharing Ontology Mappings, Matentzoglu等，2022）将源数据集与衍生数据集整合为空间图层，将生态系统核算区内的每个像元分配至单一生态功能组，以完成国家级数据集生态系统实体与生态功能组的交叉引用。本数据集与澳大利亚国家生态核算项目下编制的其他数据（包括生物多样性、生态系统状况与生态系统服务相关数据）保持一致。

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