IBRA Region 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 Region Australia Version 7.0 - PED. Bioregional Assessment Source Dataset. Viewed 12 October 2016, http://data.bioregionalassessments.gov.au/dataset/9791362e-bfb3-4d13-8a7a-dd10f25c4d84.

## **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），此处将按原始提交内容完整呈现。

澳大利亚临时生物地理分区（Interim Biogeographic Regionalisation for Australia, IBRA）7.0版生物区域，是一套基于景观学的澳大利亚地表分类方案。该分区框架最早由Thackway与Cresswell于1995年提出。IBRA 7.0数据集包含两套隶属于澳大利亚分区框架的层级式“生物区域”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）：在大区边界范围内针对生态系统开展的更精细化、本地化的分类。每个生物区域均体现了一系列统一的核心环境影响因素（包括地质条件、地貌格局、气候与生态特征等），这些因素塑造了澳大利亚及其海外领地（南极洲除外）范围内动植物群落的分布格局，以及其与自然物理环境的相互作用。IBRA 7.0版共包含89个大区与419个亚区，是在旧版本IBRA 6.1版基础上更新而来。本记录涵盖全澳大利亚范围的IBRA 7.0版大区与亚区数据。

## **数据集用途**

IBRA是澳大利亚国家保护区系统的规划框架，其开发初衷是作为识别保护区划定目标的核心工具，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、各州及各领地的自然与保护机构共同划定，其中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源数据，包括GA 100K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数据库）以及GA 2006年联邦渔业数据集。在南澳大利亚州，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（详见Laut等人1977年的研究）成为该州IBRA边界制图的基础。1995年，研究中涉及的生态群落单元经过审查与聚合，初步形成了IBRA首个版本（4.1版）的大区划分。2000年，IBRA 5.1版更新中新增了精细化制图，并划定了IBRA亚区；作为IBRA框架层级体系的组成部分，亚区聚合后即可形成大区的边界。在南澳大利亚州，生态群落单元被重新解译，作为IBRA亚区划分的基础。2005年，研究人员根据牧业土地系统制图单元与亚区分组的对应关系，重新解译了南澳大利亚州牧业区域的亚区边界。此次更新中，土地系统制图单元取代了CSIRO的生态群落单元，成为南澳大利亚州IBRA框架中保留的最小制图单元。上述更新最初仅以南澳大利亚州专属的IBRA草案图层（6.2版）形式发布，如今已与部分新增更新内容一同完整纳入全国性IBRA 7.0版数据集。

## **数据集引用**

南澳大利亚州环境、水利与自然资源部（2015）《澳大利亚IBRA大区7.0版——PED》，生物区域评估源数据集。2016年10月12日查阅，http://data.bioregionalassessments.gov.au/dataset/9791362e-bfb3-4d13-8a7a-dd10f25c4d84.