Vegetation Communities - ARC

## **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\nA depiction of major vegetation communities.\n\n## **Purpose** \n\nTo depict major vegetation communities.\n\n## **Dataset History** \n\nDataset developed for the Lake Eyre Basin Bioregional Assessment: Context statement for the Arckaringa subregion. \n\nThe following information has been taken from this website.\n\nhttp://www.environment.gov.au/fed/catalog/search/resource/details.page?uuid=%7Beade4b5f-6a30-46ae-86d8-58ed374ddc72%7D\n\nThe initial vegetation data was provided by over 100 individual projects representing the majority of Australia's regional vegetation mapping. State and Territory custodians translated the vegetation descriptions from these datasets into a common attribute framework, the National Vegetation Information System (ESCAVI, 2003). Scales of input mapping ranged from 1:25,000 to 1:5,000,000. These were combined into an Australia-wide set of vector data. Non-terrestrial areas were mostly removed by the State and Territory custodians before supplying the data to the Environmental Resources Information Network (ERIN), Department of Sustainability Environment Water Population and Communities (DSEWPaC).\n\nEach NVIS vegetation description was written to the NVIS XML format file by the custodian, transferred to ERIN and loaded into the NVIS database at ERIN. A considerable number of quality checks were performed automatically by this system to ensure conformity to the NVIS attribute standards (ESCAVI, 2003) and consistency between levels of the NVIS Information Hierarchy within each description. Descriptions for non-vegetation and non-native vegetation mapping codes were transferred via CSV files.\n\nThe following website provides a detailed description of the Major Vegetation Groups.\n\nhttp://www.anra.gov.au/topics/vegetation/pubs/native_vegetation/vegfsheet.html\n\nParts of New South Wales, South Australia, QLD and the ACT have extensive areas of vector "NoData", thus appearing as an inland sea. In the ACT and SA, the vector data was gap-filled and attributed using satellite imagery as a guide prior to rasterising. Most of these areas comprised a mixture of MVG 24 (inland water) and 25 (cleared), and in some case 99 (Unknown). \n\nEach feature class was then rasterised to a 100m raster with extents to a multiple of 1000 m, to ensure alignment. State rasters were then merged into this 'Australia wide' raster dataset.\n\n## **Dataset Citation** \n\nSA Department of Environment, Water and Natural Resources (2015) Vegetation Communities - ARC. Bioregional Assessment Source Dataset. Viewed 26 May 2016, http://data.bioregionalassessments.gov.au/dataset/83881398-6a23-42da-bd3f-9a67ca2ecaa1.

**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），此处按原始提交的形式完整呈现。

本数据集为主要植被群落的可视化展示。

**用途**

本数据集旨在呈现主要植被群落的分布与特征。

**数据集历史**

本数据集是为艾尔湖盆地生物区域评估项目中的阿卡林加亚亚区域背景说明环节开发的。

以下信息取自下述官方网站：
http://www.environment.gov.au/fed/catalog/search/resource/details.page?uuid=%7Beade4b5f-6a30-46ae-86d8-58ed374ddc72%7D

初始植被数据源自100余个独立项目，覆盖了澳大利亚绝大多数区域植被制图工作。各州及领地的数据托管方将这些数据集的植被描述转换至统一的属性框架——国家植被信息系统（National Vegetation Information System, NVIS）（ESCAVI, 2003）。输入制图的比例尺范围为1:25000至1:5000000，最终整合为全澳大利亚范围的矢量数据集。在将数据提交至可持续发展、环境、水、人口与社区部（Department of Sustainability Environment Water Population and Communities, DSEWPaC）下属的环境资源信息网络（Environmental Resources Information Network, ERIN）前，各州及领地的托管方已移除了绝大多数非陆地区域的数据。

各托管方将每条NVIS植被描述按照NVIS可扩展标记语言（XML）格式进行编写，随后传输至ERIN并加载至ERIN的NVIS数据库中。该系统自动执行了大量质量检查工作，以确保数据符合NVIS属性标准（ESCAVI, 2003），且每条描述内的NVIS信息层级各层级之间保持一致。非植被及非本土植被的制图编码说明通过逗号分隔值（CSV）文件完成传输。

下述网站提供了主要植被群组（Major Vegetation Groups）的详细说明：
http://www.anra.gov.au/topics/vegetation/pubs/native_vegetation/vegfsheet.html

新南威尔士州、南澳大利亚州、昆士兰州（QLD）及澳大利亚首都领地（ACT）的部分区域存在大面积矢量"NoData"区域，因此在可视化效果中呈现为内陆海域。在澳大利亚首都领地（ACT）与南澳大利亚州（SA），矢量数据在栅格化前已通过卫星影像作为参考完成了空白填充与属性赋值。此类区域绝大多数为主要植被群组24（MVG 24，内陆水域）与25（MVG 25，已开垦区域）的混合区域，部分区域还包含编码99（未知）。

随后将每个要素类栅格化至100米分辨率的栅格数据集，且设置空间范围为1000米的整数倍，以确保数据对齐。各州的栅格数据集随后被合并为这一"全澳大利亚范围"的栅格数据集。

**数据集引用**

南澳大利亚州环境、水与自然资源部（2015）《植被群落——ARC》，生物区域评估源数据集。于2016年5月26日查阅，http://data.bioregionalassessments.gov.au/dataset/83881398-6a23-42da-bd3f-9a67ca2ecaa1.