Vegetation Map for the Northern Rivers CMA VIS_ID 524

A vegetation map was produced for the Northern Rivers Catchment Management Authority (NRCMA) by integrating two products undertaken for the northern Comprehensive Regional Assessment (CRA), namely the forest ecosystem model and API coverage. The work was undertaken by Eco Logical Australia Pty Ltd in 2005. The new product represents a substantial improvement over the original forest ecosystem model as it provides nomenclatural consistency between forest ecosystem types and API polygon labels, includes remnant vegetation not originally captured by the CRAFTI API project, improves the spatial rigour of forest ecosystem distribution, and introduces a number of new ecosystems based on fine scale API and expert advice. The map incorporates 167 ecosystems covering a combined area of 3,332,900 ha, about 67% of the NRCMA region. It includes dry and moisttableland types, rainforest and wet escarpment brushbox and eucalypt forests, dry foothills eucalypt forest, rugged gorges woodlands, and non-eucalypt coastal types. The map includes a table which lists areal estimates for each ecosystem, including area outside the NRCMA region and pre-1750 area.;\r\nAlbeit an improved product, the final map was assembled from two existing layers which have major limitations on private land, including an unsuitable vegetation;\r\nclassification and a broad and often unreliable API layer. It is thus recommended that the product be used only in the interim by the NRCMA to support identification;\r\nand prioritisation of high conservation value vegetation, and that any attempt to reconcile the map with local landscapes be done with due caution.;\r\n;\r\nThe original NRCMA Veg layer is in grid format but was converted to polygons. See data history section.;\r\n;\r\nData custodian - Northern Rivers CMA;\r\nVIS_ID 524

本数据集为北河集水区管理局（Northern Rivers Catchment Management Authority, NRCMA）编制，整合了为北部综合区域评估（Comprehensive Regional Assessment, CRA）开展的两项成果：森林生态系统模型与API覆盖数据集。该项工作由澳大利亚Eco Logical私人有限公司于2005年完成。
相较于原始森林生态系统模型，本新产品实现了实质性改进：统一了森林生态系统类型与API多边形标签的命名规范，补充了原CRAFTI API项目未覆盖的残存植被，提升了森林生态系统分布的空间严谨性，并基于高精度API数据与专家咨询意见新增了若干生态系统类型。
本次编制的植被地图涵盖167个生态系统类型，总面积达3332900公顷，约占北河集水区管理局管辖区域的67%。其覆盖类型包括旱地与湿润台地类型、雨林与湿崖刷盒木林及桉树林、干旱山麓桉树林、崎岖峡谷灌丛，以及非桉科的沿海植被类型。该地图附带统计表，列出了各生态系统的面积估算值，涵盖北河集水区外的面积以及1750年以前的原始面积。
尽管本产品为升级成果，但最终地图基于两类现有图层制作，在私有土地区域存在显著局限：包括不适配的植被分类方案，以及覆盖范围宽泛且常不可靠的API图层。因此建议北河集水区管理局仅将本产品作为过渡性工具，用于高保护价值植被的识别与优先级划定，且在将本地图与本地景观进行匹配时需保持谨慎。
原始北河集水区植被图层为网格格式，后被转换为多边形矢量格式，详见数据历史章节。
数据保管方：北河集水区管理局（Northern Rivers CMA）；VIS_ID：524