Lower Hunter Spotted Gum Forest EEC 2010

## **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\n\n\nLower Hunter Spotted Gum Forest (LHSGIF) EEC mapping covering Cessnock, Lake Macquarie, Maitland, Newcastle and Wyong LGAs undertaken by Stephen Bell in 2010. He notes that the layer is incomplete because much of the LHSGIF is on private or coal land where access is restricted. Only if contracts are performed on these lands will updates occur. The layer includes various forms of LHSGIF as per the data analysis done for the Cessnock-Kurri project. VIS_ID 2319\n\n## **Dataset History** \n\nThere are 6 fields in the attribute table: >Map_Status - draft mapping date >Code - the current working veg community code (this will probably change to a more streamlined order for the final) >Veg_Name - the current working veg community names, some may change to make it more streamlined >LGA - the relevant LGA for each polygon >Source - where the mapping is sourced from, this project or previous projects etc >Accuracy - a 4 class system to provide information on expected accuracy. Class 1 = ground data; Class 2 = previous mapping with modifications; Class 3 = previous mapping with no modifications; Class 4 = no data (ie: predicted). Data capture progress (notes from S. Bell): Maitland LGA - there are several patches that I have not got to yet and hence mapping is based on Lisa Hills LGA mapping from 2006. Most of this area is coded as 17 (undefined) until I can work out the boundaries of the variants - they will probably mostly turn out to be variant 17a(i) in the east, but 18h in the west. Wyong LGA - I also found that the delineation of LHSGIF for much of the Wyong LGA mapping is outdated and confused, so I will need to revisit some of those patches to clarify things - in the 2002 LGA mapping, I had lumped all spotted gum - ironbark forests together, but now I need to extract those areas with affinities to LHSGIF. Much of this is completed, but there are a few patches still remaining. Cessnock LGA - Over in the west of Cessnock LGA, there is this probable new species aff fibrosa, and I have not yet determined where its habitat fits into the LHSGIF Mothership, so it is coded simply as 17 for now. Newcastle and Lake Macquarie LGAs - these are all but completed now, just a couple of small patches left to inspect. A couple of other points: - for this draft I've split up the variants as best I can, but the final cuts will need to await the full data analysis. For example, I've used Wallis Creek as the split between the 'true' LHSGIF and the Hinterland LHSGIF, as it is around here that the grass composition changes from Themeda australis/ Joycea pallida in the east to Entolasia stricta/ Aristida vagans to the west. These species seem to be driving the splits in the data analysis. Further up the valley (NW of Cessnock), Aristida ramosa/ Aristida vagans takes over from Entolasia stricta. - I've included the various forms of LHSGIF as per the data analysis done for the Cessnock-Kurri project a couple of years ago. It is possible that some of these forms will prove themselves to be more closely related to Central Hunter communities, if and when a new analysis is done to include data from the Central-Upper Hunter. I'm not sure, for example, if the form of LHSGIF in the Cessnock report where Euc moluccana is dominant in the canopy over an understorey of essentially LHSGIF species should remain as part of the EEC or not - if you take the EEC definition literally then you would say that it should be excluded because Euc fibrosa and Cor maculata are not the important canopy species. - In addition, I've also added in unit 18h from the Cessnock-Kurri project. This is the one dominated by Euc fibrosa and Cor maculata, and the latest data analyses are showing that this should be considered part of LHSGIF. I know it's now part of the Central Hunter EEC, but it is really just a dryer form of whats present in Cessnock, as the more coastal Lake Macquarie form is a wetter form of what's in Cessnock. It seems confusing, but it all makes sense when you look at rainfall patterns and the data analysis.\n\n## **Dataset Citation** \n\nNSW Office of Environment and Heritage (2015) Lower Hunter Spotted Gum Forest EEC 2010. Bioregional Assessment Source Dataset. Viewed 13 March 2019, http://data.bioregionalassessments.gov.au/dataset/5a8f525b-d602-4120-99a3-900fc05180e7.

## **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），本文档将按原始提交形式呈现该内容：

2010年由斯蒂芬·贝尔（Stephen Bell）完成的覆盖塞斯诺克（Cessnock）、麦夸里湖（Lake Macquarie）、梅特兰（Maitland）、纽卡斯尔（Newcastle）和怀昂（Wyong）地方政府区域（Local Government Areas, LGAs）的下亨特斑点桉林（Lower Hunter Spotted Gum Forest, LHSGIF）濒危生态群落（Endangered Ecological Community, EEC）制图工作。他指出，该图层并不完整，因为多数下亨特斑点桉林分布于私人或煤矿用地，此类区域的准入受到限制，仅当相关土地上的合同履约完成后，才会对该图层进行更新。本图层包含根据塞斯诺克-库里项目（Cessnock-Kurri project）数据分析得出的各类下亨特斑点桉林类型。VIS_ID：2319

## **数据集历史**

属性表中共包含6个字段：
> 制图状态（Map_Status）：草稿制图日期
> 编码（Code）：当前使用的植被群落编码（最终版本可能会调整为更精简的编码顺序）
> 植被名称（Veg_Name）：当前使用的植被群落名称，部分名称可能会调整以实现格式精简
> 地方政府区域（LGA）：对应每个多边形的相关地方政府区域
> 来源（Source）：制图数据的来源，包括本项目或既往项目等
> 精度（Accuracy）：采用四级分类体系以说明预期精度等级：
1级：实地调查数据；
2级：经修改的既往制图数据；
3级：未修改的既往制图数据；
4级：无数据（即预测数据）。

数据采集进度（来自S.贝尔的备注）：
梅特兰地方政府区域：仍有多处斑块尚未完成制图，因此当前制图基于2006年丽莎·希尔斯（Lisa Hills）的地方政府区域制图成果。该区域大部分地块目前被编码为17（未定义），待明确各变异类型的边界后再行调整——东部多数变异类型大概率为17a(i)，西部则多为18h。

怀昂地方政府区域：我发现怀昂地方政府区域多数现有下亨特斑点桉林制图的边界划分已过时且存在混淆，因此需要重新核查部分斑块以厘清问题——在2002年的地方政府区域制图中，我曾将所有斑点桉-硬叶桉林合并归类，但如今需要从中提取与下亨特斑点桉林具有亲缘关系的区域。该区域制图已基本完成，仅剩余少量斑块待处理。

塞斯诺克地方政府区域：在塞斯诺克西部区域存在疑似新种近缘纤维桉（Eucalyptus fibrosa），目前尚未明确其生境在整个下亨特斑点桉林核心类群中的分类位置，因此暂时将其编码为17。

纽卡斯尔与麦夸里湖地方政府区域：制图工作已基本完成，仅剩余少量小型斑块待核查。

其他几点说明：
- 在本草稿版本中，我已尽可能对变异类型进行划分，但最终分类需等待完整数据分析完成后再行确定。例如，我以沃利斯溪（Wallis Creek）作为“典型”下亨特斑点桉林与内陆型下亨特斑点桉林的分界，因为该区域附近的草本群落组成发生了变化：东部为黄背草（Themeda australis）/ 苍白乔伊斯草（Joycea pallida），西部则为硬稃隐子草（Entolasia stricta）/ 长芒三芒草（Aristida vagans）。上述物种似乎是数据分析中划分群落类型的关键指示物种。在山谷更上游区域（塞斯诺克西北部），分枝三芒草（Aristida ramosa）/ 长芒三芒草取代了硬稃隐子草成为优势草本。
- 我已纳入数年前塞斯诺克-库里项目数据分析得出的各类下亨特斑点桉林类型。若后续开展包含中亨特-上亨特区域数据的新分析，部分类型可能被证实与中亨特植被群落的亲缘关系更近。例如，我尚不确定塞斯诺克报告中那种以摩鹿加桉（Eucalyptus moluccana）为冠层优势种、下层植被基本为下亨特斑点桉林物种的类型是否应继续归类为濒危生态群落：若严格按照濒危生态群落的定义，该类型应被排除，因为冠层优势种并非纤维桉（Eucalyptus fibrosa）和斑点桉（Corymbia maculata）。
- 此外，我还纳入了塞斯诺克-库里项目中的18h单元。该单元以纤维桉和斑点桉为优势种，最新数据分析表明其应归类为下亨特斑点桉林的一部分。我知晓该单元目前被归入中亨特濒危生态群落，但实际上它仅是塞斯诺克区域下亨特斑点桉林的干旱型变种——而麦夸里湖区域的沿海型变种则是塞斯诺克区域的湿润型变种。这看起来容易混淆，但结合降雨格局与数据分析后便会清晰合理。

## **数据集引用**

新南威尔士州环境与遗产办公室（NSW Office of Environment and Heritage, 2015）：《2010年下亨特斑点桉林濒危生态群落》，生物区域评估源数据集。2019年3月13日查阅，来源网址：http://data.bioregionalassessments.gov.au/dataset/5a8f525b-d602-4120-99a3-900fc05180e7。

搜集汇总

背景与挑战

背景概述

该数据集是2010年制作的下亨特地区斑点桉森林（LHSGIF）生态群落地图，覆盖Cessnock、Lake Macquarie、Maitland、Newcastle和Wyong等地方政府区域，由Stephen Bell负责。数据集不完整，因为部分森林位于私人或煤矿土地，访问受限，且属性表包含地图状态、代码、植被名称等6个字段，标注了数据准确性等级。数据集主题涉及Hunter子区域、新南威尔士州和生物群，采用Creative Commons Attribution 3.0 Australia许可证。