Mitchell Landscapes NSW OEH v3 2011

## **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\n\n\nThis dataset (version 3) supersedes the previous version of the NSW Landscapes (Version 2) ANZNSO208000229. Version 3 includes a revision of the polygon boundaries conducted in 2008. Revision corrected many alignment errors using SPOT 5 imagery as a reference layer. The revisions for Version 3 have resulted in significant alterations to Landscape boundaries in some regions. See associated technical report 'ELA 2008 Editing Mitchell Landscapes'. Version 2 maps were constructed from existing data and have a strong geologic, geomorphic and pedologic base. They do not include field validation/original mapping. Scale and reliability was constrained to 1:250,000 scale by the availability of suitable state-wide maps, although some source data (air photos/maps) were more detailed. A transect of map sheets was compared with other data during the mapping, it is believed reasonable product consistency has been attained. Details on the methodology, limitations and constraints in the\n\ndevlopment of the original dataset are contained in P.B.Mitchell (2002) NSW Ecosystems Study: Background and Methodology (Unpublished).\n\n## **Dataset History** \n\nThis data and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied:\n\n\n\nFirst published as Version 2. Bounds revised November 2008 (Version 3). Version 3 supersedes Version 2. Original data was an interpretation of various existing datasets, including NSW Soil Conservation Service Landsystem Mapping, 1:250 000 Geological Mapping, Topography and Elevation. Boundaries then transferred to 1:250 000 transparency maps and digitised using ArcINFO. Version 3 represents correction of many displacement errors against SPOT5.Positional accuracy:10km to 100km.Attribute accuracy:High degree of accuracy at the 1:250 000 scale. No ground truthing completed for current mapping.Logical consistency:ArcINFO was used to ensure all polygons were closed and all digitising errors were corrected. All polygons are labelled once and there are no duplications. After capture, the coverage was checked against original mapping and errors corrected.Attributes: Name Description Shape Polygon ECOS_MESO Geographical grouping of a series of landscapes (Mitchell 2002). For the description of each landscape type see 'Additional Metadata". LS_CODE Unique three character code for each of the 570 Landscapes (excluding water). Lscape_Nam Unique name for each of the 570 landscapes (excluding water). CONFIDENCE A single letter code referring to the mapping reliability of landscape boundaries. For definitions of the codes see section 'Additional Metadata'. BOUNDTYPE A four letter code referring to the spatial pattern of landscapes. For definitions of the codes see section Shape_Area The area in hectares Shape_Leng Length of polygon perimeter in metres.\n\n## **Dataset Citation** \n\n"NSW Department of Environment, Climate Change and Water" (2010) Mitchell Landscapes NSW OEH v3 2011. Bioregional Assessment Source Dataset. Viewed 10 July 2017, http://data.bioregionalassessments.gov.au/dataset/e64597db-453c-46be-a352-360b775d2852.**摘要** 本数据集及其元数据声明由第三方提供给生物区域评估计划（Bioregional Assessment Programme），此处按原始提交状态呈现： 本第3版数据集取代了此前的新南威尔士州景观（Version 2）数据集ANZNSO208000229。第3版包含2008年开展的多边形边界修订工作，以SPOT 5卫星影像作为参考图层，修正了大量对齐误差。此次修订对部分区域的景观边界进行了大幅调整，相关技术报告详见《ELA 2008 Editing Mitchell Landscapes》。 第2版地图基于现有数据构建，以坚实的地质、地貌与土壤学基础为依据，未包含野外验证或原始测绘工作。由于可获取的全州适宜地图资源受限，其比例尺与可靠性被约束在1:250000，尽管部分源数据（航空照片/地图）精度更高。制图过程中对一组图幅进行了交叉比对，因此认为本数据集已实现合理的产品一致性。原始数据集开发的方法学、局限性与约束条件详情可参阅P.B. Mitchell（2002）《新南威尔士州生态系统研究：背景与方法学》（未出版）。 **数据集历史** 本数据集及其元数据声明由第三方提供给生物区域评估计划，此处按原始提交状态呈现： 首次以第2版发布。边界于2008年11月完成修订（即第3版），第3版取代了第2版。原始数据基于包括新南威尔士州土壤保护服务局土地系统制图、1:250000地质制图、地形与高程在内的多套现有数据集解译得到。随后将边界转绘至1:250000透明底图，并通过ArcINFO进行数字化。第3版针对SPOT5影像修正了大量位移误差。 位置精度：10千米至100千米。属性精度：在1:250000比例尺下具备较高精度。当前制图未完成地面实测验证。逻辑一致性：通过ArcINFO确保所有多边形闭合并修正所有数字化误差，所有多边形仅标注一次且无重复要素。数据捕获后，对照原始制图对数据集进行了检查并修正误差。 属性字段说明： - Shape：多边形（Polygon） - ECOS_MESO：一系列景观的地理分组（Mitchell 2002），各景观类型的描述详见「附加元数据」章节 - LS_CODE：针对570种景观（不含水体）的唯一三字代码 - Lscape_Nam：针对570种景观（不含水体）的唯一名称 - CONFIDENCE：代表景观边界制图可靠性的单字母代码，代码定义详见「附加元数据」章节 - BOUNDTYPE：代表景观空间格局的四字代码，代码定义详见对应章节 - Shape_Area：以公顷为单位的多边形面积 - Shape_Leng：以米为单位的多边形周长 **数据集引用** 「新南威尔士州环境、气候与水务部（NSW Department of Environment, Climate Change and Water）」（2010）《新南威尔士州米切尔景观OEH v3 2011》，生物区域评估源数据集。2017年7月10日查阅，http://data.bioregionalassessments.gov.au/dataset/e64597db-453c-46be-a352-360b775d2852。