Interim Biogeographic Regionalisation for Australia (IBRA), Version 7 (Regions)

Interim Biogeographic Regionalisation for Australia (IBRA) version 7.0 represents a landscape based approach to classifying the land surface of Australia. 89 biogeographic regions and 419 sub regions have been delineated, each reflecting a unifying set of major environmental influences which shape the occurrence of flora and fauna and their interaction with the physical environment across Australia and its external territories (excluding Antarctica). IBRA Version 7.0 data consists of two datasets. IBRA bioregions, which is a larger scale regional classification of homogenous ecosystems, and sub regions, which are more localised. IBRA Version 7.0 is the result of both significant changes to certain IBRA 6.1 boundaries, plus refinement of other boundaries due to better data availability amongst some states and territories, and alterations by the states/territories along state borders. The updated boundaries were jointly defined by the Commonwealth, State and Territory nature and conservation agencies. In this respect refinements were carried out to all mainland jurisdictions with significant changes in Queensland and South Australia. In addition the dataset was also updated to more closely conform to the Geoscience Australia 1:100K State borders, and a standard coding/naming convention introduced (for both regions and sub-regions) resulting in differences to both names and codes used in earlier IBRA Versions.\r\nVarious sources were used to delineate islands - these included the GA100K Admin layer plus the Australian Maritime Boundaries dataset, a Coral Sea dataset (held in ERIN) and the GA Commonwealth Fisheries 2006 dataset.

澳大利亚临时生物地理区域划分（Interim Biogeographic Regionalisation for Australia，IBRA）7.0版采用基于景观的方法对澳大利亚陆地表面进行分类。该数据集共划定89个生物地理区域及419个子区域，每个单元均体现了一组统一的核心环境影响因素，这些因素塑造了澳大利亚及其海外领地（南极洲除外）范围内动植物的分布格局，以及它们与自然物理环境的相互作用。IBRA 7.0版数据集包含两类数据：一类是IBRA生物地理区域（bioregions），即针对同质生态系统的大尺度区域分类；另一类是子区域，属于更精细化的局地尺度分类单元。IBRA 7.0版的更新源于多方面调整：一是对部分IBRA 6.1版的边界进行了重大修改；二是由于部分州和领地获取了更优质的基础数据，对其余边界进行了细化完善；三是部分州/领地针对州界沿线的边界进行了调整。更新后的边界由联邦、各州及领地的自然保护主管部门共同划定。在此框架下，所有大陆管辖区域均完成了边界细化，其中昆士兰州与南澳大利亚州的边界调整幅度最为显著。此外，本次数据集还进行了两项优化：一是使其更匹配澳大利亚地质科学局（Geoscience Australia）发布的1:10万州界矢量数据；二是为所有区域及子区域引入了统一的编码与命名规范，这使得本版本与此前IBRA各版本在区域名称及编码上均存在差异。
岛屿边界的划定参考了多类数据源，其中包括GA100K行政图层、澳大利亚海洋边界数据集、存储于ERIN中的珊瑚海数据集，以及澳大利亚地质科学局2006年联邦渔业数据集。