Mid North Coast Vegetation (EcoLogical Version). VIS_ID 3886

Two spatial products generated for the Comprehensive Regional Assessment (CRA), namely floristic linework captured by aerial photographic interpretation (API), and a;\r\nforest ecosystem model, were integrated to provide an improved spatial map of forest ecosystem distribution on the Mid North Coast of NSW. The process involved intuitive assignment of dominant forest ecosystems to polygons captured by the API, and involved a number of iterative steps. The resultant layer is both polygon and grid cell based, and provides an interim spatial product upon which Government agencies will be able to identify high conservation value native vegetation across the Mid North Coast of NSW with reasonable reliability.;\r\nThe original forest ecosystem classification included some 230 ecosystems, occurring from the Queensland Border to the Lower Hunter Valley. Of these, 124 were eliminated, either because they were not considered to occur in the Mid North;\r\nCoast, or they were replaced by new or existing ecosystems. A total of 40 ecosystems were introduced, including splits of existing ecosystems (eg. rainforest) or new ecosystems imported from more recent classifications. The final number of ecosystems mapped within the Mid North Coast for this project was 140. Derivation of current and former extent of each ecosystem was undertaken to provide an index of conservation status in the form of a %-cleared estimate. In;\r\nsummary, 39 ecosystems possessed a %-cleared value of at least 50%, while 46 ecosystems were less than 20% cleared. Several of those with a high clearing rate are equivalent to endangered ecological communities listed under the Threatened Species Act 1995. In the longer term, an improved classification will be required to replace forest ecosystems, which is overly broad on coastal and private land given the influence of commercial forest types on the classification. Additional targeted API will also be;\r\nrequired in future, as the reliability of API undertaken for the CRA is questionable in many areas. Provision of an improved API coverage and a more appropriate classification will enable production of a new generation of vegetation mapping products for north-east NSW, providing the future basis for property vegetation planning, benchmarking, bio-certification and bio-banking.;\r\nVIS_ID 3886

为综合区域评估（Comprehensive Regional Assessment, CRA）生成的两类空间产品——经航空摄影解译（aerial photographic interpretation, API）获取的植物区系线划图，以及森林生态系统模型——被整合，用于优化新南威尔士州（New South Wales, NSW）中北海岸区域的森林生态系统分布空间制图。该流程通过将优势森林生态系统直观赋值至API解译得到的多边形要素，并历经多轮迭代步骤完成。最终生成的图层同时基于多边形与栅格单元，可作为一款临时空间产品，供政府机构以较高可靠性识别新南威尔士州中北海岸全域的高保护价值原生植被。
原始森林生态系统分类共涵盖约230类生态系统，分布范围从昆士兰州边境延伸至下亨特谷。其中124类被剔除，原因要么是该类生态系统未在中北海岸区域出现，要么是被新的或已有的生态系统所替代。本次研究共引入40类新的生态系统，包括对现有生态系统（如雨林）的拆分结果，或是从最新分类体系中导入的全新生态系统。本项目在中北海岸区域最终绘制的生态系统类别共计140类。研究针对每类生态系统的当前与历史分布范围进行推导，以清理占比（%-cleared）的形式生成保护现状指数。综上，有39类生态系统的清理占比不低于50%，另有46类生态系统的清理占比不足20%。其中部分清理率较高的生态系统，等同于《1995年濒危物种法》中列明的濒危生态群落。从长期来看，当前的森林生态系统分类体系存在不足，需进行优化更新：由于商业林类型对分类的影响，该体系在沿海区域与私有土地上的划分过于宽泛。未来还需开展针对性的航空摄影解译工作，因为综合区域评估项目所采用的航空摄影解译结果在诸多区域的可靠性存疑。若能优化航空摄影解译的覆盖范围并采用更适配的分类体系，即可为新南威尔士州东北部地区打造新一代植被制图产品，为后续的地块植被规划、基准对标、生物认证以及生物信贷（bio-banking）提供支撑。
VIS_ID 3886