IBRA Subregion Australia Version 7.0 - PED

## **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\nInterim Biogeographic Regionalisation for Australia (IBRA) Version 7.0 Bioregions represents a landscape based approach to classifying the land surface of Australia. The framework was first described by Thackway and Cresswell (1995). IBRA 7.0 data consists of two hierarchical `Bioregion' datasets described as part of the regionalisation framework for Australia; 1) Regions - larger scale regional classification of homogenous ecosystems & 2) Subregions - a more localised, finer scale classification of ecosystems within the Region boundaries. Each Bioregion reflects a unifying set of major environmental influences (such as geology, landform patterns, climate & ecological features) which shape the occurrence of flora and fauna associations and their interaction with the physical environment across Australia and its external territories (excluding Antarctica). IBRA Version 7.0 describes 89 Regions and 419 Subregions and is the result of updates to the previous version, IBRA Version 6.1 This record represents Australia-wide IBRA Version 7.0 Regions and Subregions.\n\n## **Purpose** \n\nIBRA is the National Reserve System's planning framework; it was developed as a fundamental tool for identifying reservation targets towards developing a comprehensive and representative reserve system in Australia.\n\n## **Dataset History** \n\nIBRA Version 7.0 is the result of changes to certain IBRA 6.1 boundaries with edge-matching along state borders. The updated boundaries were jointly defined by the Commonwealth, State and Territory nature and conservation agencies. There have been significant changes in Queensland and South Australia. In addition the dataset was also updated to more closely conform to the Geoscience Australia (GA) 1:100K Coastline and State borders. Various sources were used to delineate islands - these included the GA 100K Admin layer plus the Australian Maritime Boundaries dataset, a Coral Sea dataset (held in ERIN) and the GA Commonwealth Fisheries 2006 dataset. In South Australia, the work undertaken by the CSIRO to map the `Environments of South Australia' (see Laut, et. al. 1977) has formed the basis for the mapping of IBRA boundaries for the state. In 1995 the environmental association units, described as part of this work, were reviewed and aggregated to initially form IBRA Regions for the first version of IBRA (Version 4.1). In 2000 an update to create IBRA Version 5.1 incorporated a finer scale level of mapping in the IBRA dataset with the delineation of IBRA Subregions; as part of the hierarchy formed by the IBRA framework Subregions are aggregated to form the boundaries of the IBRA Regions. In South Australia, the environmental associations were interpreted again to form the basis for IBRA Subregions. In 2005 the Subregion boundaries in the South Australian pastoral districts were re-interpreted based on an assignment of the pastoral land system mapping units to Subregion groupings. As part of that update, the land system mapping units replaced the CSIRO environmental associations as the smallest units maintained for the IBRA framework in SA. These updates were initially featured in an SA-only draft IBRA layer designated Version 6.2. These updates are now fully incorprated in the national IBRA Version 7.0 dataset with some additional updates.\n\n## **Dataset Citation** \n\nSA Department of Environment, Water and Natural Resources (2015) IBRA Subregion Australia Version 7.0 - PED. Bioregional Assessment Source Dataset. Viewed 12 October 2016, http://data.bioregionalassessments.gov.au/dataset/e5a6d60a-009c-4fc3-b27d-67ed108b38ba.

**摘要**

本数据集及其元数据声明由第三方提交至生物区域评估计划（Bioregional Assessment Programme），本文档按原始提交内容呈现。

澳大利亚临时生物地理区域划分（Interim Biogeographic Regionalisation for Australia, IBRA）7.0版生物区域，是一种基于景观的澳大利亚地表分类方法，该框架最初由Thackway与Cresswell于1995年提出。IBRA 7.0数据包含两个隶属于澳大利亚区域化框架的层级式生物区域（Bioregion）数据集：1）大区（Regions）：针对同质生态系统的大尺度区域分类；2）亚区（Subregions）：在大区边界内的更本地化、精细化的生态系统分类。每个生物区域均体现了一套统一的主要环境影响因素（如地质、地貌格局、气候与生态特征），这些因素塑造了澳大利亚及其海外领地（南极洲除外）内动植物群落的分布及其与自然环境的相互作用。IBRA 7.0版共涵盖89个大区与419个亚区，是对前一版本IBRA 6.1版的更新成果。本记录涵盖全澳范围的IBRA 7.0版大区与亚区数据。

**用途**

IBRA是国家保护区系统的规划框架，其作为核心工具，用于识别保护区建设目标，助力澳大利亚构建全面且具有代表性的保护区体系。

**数据集历史**

IBRA 7.0版是对IBRA 6.1版部分边界进行调整，并沿州界完成边界匹配后的成果。更新后的边界由联邦、州和领地的自然与保护机构共同划定。昆士兰州与南澳大利亚州的边界调整幅度较大。此外，本数据集还进行了更新，以更贴合澳大利亚地球科学局（Geoscience Australia, GA）1:10万比例尺海岸线与州界数据。岛屿边界的划定参考了多种数据源，包括GA 10万比例尺行政图层、澳大利亚海洋边界数据集、珊瑚海数据集（存储于ERIN）以及GA 2006年联邦渔业数据集。在南澳大利亚州，其IBRA边界的绘制以澳大利亚联邦科学与工业研究组织（CSIRO）开展的“南澳大利亚州环境”制图工作（参见Laut等人1977年的研究）为基础。1995年，该研究中描述的环境关联单元经过审查与聚合，初步形成了首个IBRA版本（4.1版）的生物区域。2000年，IBRA 5.1版更新引入了更精细化的制图层级，划定了IBRA亚区：在IBRA框架的层级体系中，亚区聚合后形成生物大区的边界。在南澳大利亚州，环境关联单元被重新解译，作为IBRA亚区的绘制基础。2005年，基于将牧地系统制图单元分配至亚区分组的工作，南澳大利亚州牧区的亚区边界被重新解译。此次更新中，牧地系统制图单元取代了CSIRO环境关联单元，成为南澳大利亚州IBRA框架中保留的最小制图单元。这些更新最初仅在南澳大利亚州专属的IBRA草案图层6.2版中呈现。如今，这些更新已完全整合至全国性的IBRA 7.0版数据集中，并附带了额外的更新内容。

**数据集引用**

南澳大利亚州环境、水与自然资源部（2015）《IBRA亚区澳大利亚7.0版 - PED》，生物区域评估源数据集。查阅于2016年10月12日，http://data.bioregionalassessments.gov.au/dataset/e5a6d60a-009c-4fc3-b27d-67ed108b38ba。