Gundabooka National Park and State Conservation Area Vegetation 2021 VIS_ID 5108

Eco Logical Australia was commissioned by the NSW Parks and Wildlife Service and the NSW Department of Planning, Industry and Environment to undertake vegetation survey, analysis and mapping of Gundabooka National Park and State Conservation Area.\r\nGundabooka National Park and State Conservation Area is of special significance to the Aboriginal people of western NSW and is the traditional lands of the Ngemba and Paakandji people who have strong cultural links to the area. The Gundabooka Range was a vital resource for Aboriginal people during dry periods, with creeks in the range being one of the few locations on the Cobar Peneplain that provide water during times of drought.\r\nGundabooka National Park and State Conservation Area are located in north western New South Wales 50 km south west of Bourke and just south of the Darling River, covering an area of 90,473 hectares within the Cobar Peneplain and Darling Riverine Plains bioregions. Prior to gazettal in 1996, Gundabooka National Park consisted of three pastoral stations: Belah, Ben Lomond and Mulgowan Stations. In 2006 the nearby Yanda Station was gazetted and became the Gundabooka State Conservation Area.\r\nThis project reviews and expands upon existing data and mapping and aligns vegetation communities with the current state-wide Plant Community Type classification through the collection of strategic data on floristic and structural diversity.\r\nExisting vegetation surveys and mapping were reviewed and supplemented with over 240 rapid data points. Vegetation community mapping was undertaken at a scale of between 1:5,000 and 1:25,000 using a range of datasets. Development of vegetation community linework and attribution of Plant Community Types was undertaken in three dimensions using high resolution stereo ADS40 imagery. The final mapped product is considered accurate at a 1:25,000 scale.\r\nA total of 410 species from 76 plant families were recorded, of which 8% were exotic (one being a priority weed). Four threatened plant species are now known to occur, with new localities identified for Pterostylis cobarensis and Lepidium monoplocoides.\r\nA total of 35 unique vegetation communities (totalling 89,210 hectares) were mapped and described. These 35 vegetation communities are equivalent to 25 Plant Community Types. The vast majority of vegetation falls within the Semi-Arid Woodlands and Arid Shrublands Vegetation Formations. One Threatened Ecological Community, namely Coolibah-Black Box Woodland was mapped across three Plant Community Types on the floodplains of the Darling River.\r\nA range of management considerations are discussed including: grazing pressure from feral animals; erosion and loss of topsoil; inappropriate fire regimes; priority and environmental weeds; historical clearing and land degradation; and extensive Eucalypt dieback.\r\n\r\nVIS_ID 5108

本项目由新南威尔士州公园与野生动物服务局（NSW Parks and Wildlife Service）及新南威尔士州规划、产业与环境部（NSW Department of Planning, Industry and Environment）委托澳大利亚生态逻辑公司（Eco Logical Australia）开展冈德比卡国家公园与州保护区（Gundabooka National Park and State Conservation Area）的植被调查、分析与制图工作。
冈德比卡国家公园与州保护区对新南威尔士州西部的原住民具有特殊意义，是恩杰姆巴人（Ngemba）与帕坎吉人（Paakandji）的传统领地，二者与该区域有着深厚的文化渊源。干旱时期，冈德比卡山脉曾是原住民的重要生存资源，山脉内的溪流是科巴尔低平原（Cobar Peneplain）上少数能在旱季提供水源的区域之一。
冈德比卡国家公园与州保护区位于新南威尔士州西北部，距布尔克（Bourke）西南50公里，紧邻达令河（Darling River）南岸，地处科巴尔低平原与达令河沿岸平原生物地理区，总面积达90473公顷。1996年正式公告设立前，冈德比卡国家公园由贝拉畜牧站（Belah Station）、本洛蒙德畜牧站（Ben Lomond Station）与马尔高恩畜牧站（Mulgowan Station）三处畜牧站组成；2006年，邻近的延达畜牧站（Yanda Station）正式公告设立并划入，成为冈德比卡州保护区。
本项目对现有数据与制图成果进行复盘与拓展，通过采集区系与结构多样性的针对性数据，将植被群落与当前全州统一的植物群落类型（Plant Community Type）分类体系进行匹配。
项目组对现有植被调查与制图成果进行复核，并补充了超过240个快速采样点。植被群落制图采用多源数据集，比例尺介于1:5000至1:25000之间。植被群落轮廓线绘制与植物群落类型赋值工作依托高分辨率立体ADS40影像以三维方式完成，最终制图成果在1:25000比例尺下精度达标。
本次调查共记录到76个植物科下的410个物种，其中8%为外来物种（含1种优先管控入侵杂草）。目前已知区域内分布有4种受威胁植物物种，其中科巴尔玉凤花（Pterostylis cobarensis）与单柱独行菜（Lepidium monoplocoides）还发现了新的分布点。
本次共制图并描述了35个独特的植被群落（总面积达89210公顷），对应25种植物群落类型。绝大多数植被属于半干旱林地与干旱灌丛植被群系。在达令河河漫滩上，共在3种植物群落类型中制图到1处受威胁生态群落（Threatened Ecological Community）：库利巴桉-黑盒桉林地（Coolibah-Black Box Woodland）。
本项目讨论了多项管理议题，包括：入侵动物的放牧压力、土壤侵蚀与表土流失、不当用火制度、优先管控与环境入侵杂草、历史开垦与土地退化，以及大范围桉树衰退问题。
VIS_ID 5108