Interim Biogeographic Regionalisation for Australia (IBRA), Version 5.1 - Sub-regions

IBRA version 5.1 Sub-regions, like their parent regionalisation IBRA version 5.1, represent a landscape based approach to classifying the land surface of Australia from a range of continental data on environmental attributes, at a finer scale. 354 IBRA 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.\nThe IBRA Version 5.1 Sub-regions are the result of refinement of the IBRA Version 4 boundaries. These refined boundaries were jointly defined by the Commonwealth, State and Territory nature and conservation agencies. Following a DEH facilitated workshop on the revision of boundaries on 24 July 2000, spatial data refinements were undertaken by DEH in conjunction with relevant State / Territory agencies. \n\nNominal attributes for the IBRA and IBRA Sub-regions are; climate, lithology/geology, landform, vegetation, flora and fauna, and landuse. The use of these attributes varies across the States.CC - Attribution (CC BY)\nThis data has been licensed under the Creative Commons Attribution 4.0 International Licence. \n© Commonwealth of Australia (Department of the Environment and Heritage) 2000临时生物地理区域划分方案（Interim Biogeographic Regionalisation for Australia，简称IBRA）5.1版亚区域与其上级区域化体系IBRA 5.1版保持一致，均采用基于景观的分类方法，依托多组大陆尺度环境属性数据集，以更精细的粒度对澳大利亚陆表进行区划。本次共划定354个IBRA亚区域，每个亚区域均对应一套统一的核心环境影响因子，这些因子塑造了当地动植物区系的分布格局及其与自然物理环境的相互作用。 IBRA 5.1版亚区域是对IBRA 4.0版边界进行精细化调整后的成果。此次优化后的边界由澳大利亚联邦、各州及领地的自然与保护机构联合划定。2000年7月24日，在澳大利亚环境与遗产部（Department of the Environment and Heritage，简称DEH）牵头举办的边界修订研讨会后，DEH联合相关州/领地机构完成了空间数据的精细化处理。 IBRA及其亚区域的标称属性包括气候、岩性/地质、地貌、植被、动植物区系以及土地利用。各州对上述属性的应用标准存在差异。知识共享署名（CC BY） 本数据集采用知识共享署名4.0国际许可协议进行授权。 © 澳大利亚联邦（环境与遗产部）2000