Maitland Native Vegetation Mapping 2021

Existing native vegetation mapping covering the Maitland Local Government Area (Umwelt, 2009; following Hill, 2003) was updated by NGH in 2021 using an aerial photograph interpretation approach using the most recently acquired, Council supplied imagery from 2020 and 2021. Using a systematic 1km x 1km grid, mapped vegetation was reviewed against the underlying high spatial resolution imagery at a scale of 1:10,000. Based on this review one of two responses were made to update the data: - removal of polygons or parts thereof in response to vegetation loss (603 ha removed)- addition of polygons in response to previously unmapped vegetation or emergence of new regrowth (832 ha added).An assessment and classification of vegetation condition was also completed using on-screen visual appraisal of newly mapped vegetation, ground truthed by Council, and the development and application of vegetation condition classification which was applied to the entire mapped vegetation layer.

现存的本地植被映射，覆盖了梅特兰德地方政府区域（Umwelt，2009年；参见Hill，2003年），由NGH于2021年采用航空照片解释方法进行了更新，使用了最近获取的、由市政府提供的2020年和2021年的影像资料。通过一个系统的1公里x1公里网格，对已绘制的植被进行了审核，并与底层的1:10,000高空间分辨率影像进行比对。基于此审核，对数据进行了两种响应之一以进行更新：针对植被损失进行的多边形或其部分去除（去除603公顷）- 针对之前未绘制的植被或新生长的出现进行的多边形添加（添加832公顷）。同时，通过对新绘制植被的屏幕视觉评估，由市政府进行地面验证，并开发与应用植被状况分类方法，该方法被应用于整个已绘制植被层。