TERN Mitchell Grass Rangeland SuperSite Panoramic Photopoint Image Collection

High quality digital images are captured using a digital SLR camera at the plots (core 1 hectare vegetation plot) at the TERN Mitchell Grass Rangeland SuperSite using the panoramic photopoint method. The panoramic photopoint method may be the most informative in open forests/woodlands and rangelands. Three photopoints are established configured in an equilateral triangle (2.5m sides) with the centre marked with a star dropper and the location recorded with DGPS. At each photopoint take photographic sequences in a 360° panorama, with up to 40 photographs with a minimum 50% overlap between consecutive photographs. For more information about the method, see
White, el al. (2012) AusPlots Rangelands Survey Protocols Manual Version 1.2.9.

The Mitchell Grass Rangeland SuperSite is located at Rosebank Station approximately 11 km south-east of Longreach in Queensland. The site is arid tussock grassland with a variety of grass species including Astrebla lappacea and Astrebla squarrosa over black vertosol soil that supports sheep and beef cattle grazing. Traditional owners at this site are the Iningai people. For additional site information, see https://www.tern.org.au/tern-observatory/tern-ecosystem-processes/mitchell-grass-rangeland-supersite/ .

Five-photopoint images are also collected at the site.

本数据集采用数码单反相机，通过全景摄影点法，在TERN米切尔草牧场超级站点（TERN Mitchell Grass Rangeland SuperSite）的核心1公顷植被样地内采集高质量数字图像。全景摄影点法在开放森林、林地与牧场生态系统中，堪称信息量最为丰富的图像采集方案。研究人员设立三个摄影点，以边长2.5米的等边三角形布局，三角形中心点以星型测杆标记，并通过差分全球定位系统（DGPS）记录点位坐标。每个摄影点需采集360°全景序列图像，单序列最多可拍摄40张照片，且相邻照片间重叠度不低于50%。如需了解该方法的更多细节，请参阅White等人（2012）发布的《AusPlots牧场调查规程手册》版本1.2.9。

米切尔草牧场超级站点坐落于昆士兰州朗里奇东南方向约11公里的罗斯班克牧场（Rosebank Station），该区域为干旱丛生禾草草原，土壤为黑色变性土，优势草本物种包括卷叶帚芒草（Astrebla lappacea）与硬叶帚芒草（Astrebla squarrosa），场地用于绵羊与肉牛放牧。该站点的传统所有者为Iningai族人。如需获取更多场地相关信息，请访问：https://www.tern.org.au/tern-observatory/tern-ecosystem-processes/mitchell-grass-rangeland-supersite/。

本站点同时采集了五组摄影点图像。