Forests of Australia (2023)

*Forests of Australia (2023)* is a continental spatial dataset of forest extent, by national forest categories and types, assembled for *Australia's State of the Forests Report – 2023 update*. It was developed from multiple forest, vegetation\r\nand land cover data inputs, including contributions from Australian, state and territory government agencies and external sources.\r\n\r\nA forest is defined in this dataset as:\r\n"*An area, incorporating all living and non-living components, that is dominated by trees having usually a single\r\nstem and a mature or potentially mature stand height exceeding two metres and with existing or potential crown cover of overstorey strata about equal to or greater than 20 per cent. This includes Australia's diverse native forests and plantations, regardless of age. It is also sufficiently broad to encompass areas of trees that are sometimes described as woodlands*".\r\n\r\nThe dataset was compiled by the Australian Bureau of Agricultural and Resource Economics and Sciences (ABARES) for the National Forest Inventory (NFI), a collaborative partnership between the Australian and state and territory governments. The role of the NFI is to collate, integrate and communicate information on Australia's forests. State and territory government agencies collect forest data using independent methods and at varying scales or resolutions. The NFI applies a national classification to state and territory data to allow seamless integration of these datasets. Multiple independent sources of external data are used to fill data gaps and improve the quality of the final dataset.\r\n\r\nThe NFI classifies forests into three national forest categories (Native forest, Commercial plantation, and Other forest) and then into various forest types. Commercial plantations presented in this dataset were sourced from the National Plantation Inventory (NPI) spatial dataset (2021) (unpublished, also produced by ABARES. Another dataset produced by ABARES, the Catchment scale Land Use and Management (CLUM) dataset (2020), was used to identify and mask out land uses that are inappropriate to map as forest.\r\n\r\nThe *Forests of Australia (2023)* dataset is produced to fulfil requirements of Australia's *National Forest Policy Statement* and the *Regional Forests Agreement Act 2002* (Cwth), and is used by the Australian Government for domestic and international reporting. \r\n\r\nThis dataset is updated every five years for the Australia's State of the Forests Report Series. Further information can be found on the Forests Australia website: http://www.agriculture.gov.au/abares/forestsaustralia/sofr/《澳大利亚森林（2023）》（Forests of Australia (2023)）是为编制《澳大利亚森林状况报告——2023年更新版》而汇编的、按国家森林类别与类型划分的大陆尺度森林覆盖范围空间数据集。该数据集基于多源森林、植被与土地覆盖数据构建，数据来源涵盖澳大利亚联邦、各州及领地政府机构提供的资料，以及各类外部数据源。 本数据集对森林的定义为："涵盖所有生物与非生物组分的区域，以通常具有单一主干、成熟或潜在成熟高度超过2米的树木为优势种，且上层林冠郁闭度（现有或潜在）不低于20%。该范畴囊括澳大利亚各类原生林与人工林，无论其林龄；同时其覆盖范围足够宽泛，可涵盖部分被称为疏林的区域"。 本数据集由澳大利亚农业与资源经济科学局（Australian Bureau of Agricultural and Resource Economics and Sciences, ABARES）为国家森林清查（National Forest Inventory, NFI）编制。NFI是澳大利亚联邦与州、领地政府间的合作项目，其核心职能是汇整、整合并传播澳大利亚森林相关信息。各州及领地政府机构采用独立方法、按不同尺度或分辨率采集森林数据，NFI通过统一应用国家分类标准，实现各辖区数据集的无缝整合；同时引入多源外部数据填补数据缺口，提升最终数据集的质量。 NFI将森林划分为三大国家森林类别：原生林（Native forest）、商用人工林（Commercial plantation）与其他林分（Other forest），并进一步细分为多种森林类型。本数据集收录的商用人工林数据源自《国家人工林清查（2021）》（National Plantation Inventory, NPI）空间数据集（2021）（未公开出版物，同样由ABARES编制）。此外，编制过程中还使用了ABARES出品的另一数据集——流域尺度土地利用与管理（Catchment scale Land Use and Management, CLUM）数据集（2020），用于识别并掩膜排除不适宜划分为森林的土地利用类型。 《澳大利亚森林（2023）》数据集的编制旨在满足澳大利亚《国家森林政策声明》及2002年《区域森林协议法案（联邦）》（Regional Forests Agreement Act 2002 (Cwth)）的相关要求，可供澳大利亚联邦政府用于国内与国际报告工作。 本数据集每五年随《澳大利亚森林状况报告》系列更新一次。更多详细信息可访问澳大利亚森林官方网站：http://www.agriculture.gov.au/abares/forestsaustralia/sofr/