USJRB_PLNT_CMMNT2017

Plant community maps were produced from aerial photointerpretation of 1-foot resolution, 4-band orthoimagery flown March 10, 2017. Plant communities were heads-up digitized in ESRI ArcMap with a 0.5 acre minimum mapping unit. Map accuracy assessment was 92% calculated as the overall probability correct using map marginal proportions.本数据集通过对2017年3月10日航拍获取的1英尺分辨率、4波段正射影像（orthoimagery）开展航空像片解译，生成了植物群落图。植物群落的分布边界在ESRI ArcMap软件中通过抬头式数字化（heads-up digitizing）方式完成勾绘，最小制图单元设定为0.5英亩。经评估，该植物群落图的整体精度达92%，该精度值为基于制图边际比例计算得到的总体正确概率。