USJRB_PLNT_CMMNT2016

Plant community maps were produced from aerial photointerpretation of 1-foot resolution, 4-band orthoimagery flown March 1 and March 4, 2016. Plant communities were heads-up digitized in ESRI ArcMap with a 0.5 acre minimum mapping unit. Map accuracy assessment was 89% calculated as the overall probability correct using map marginal proportions.本数据集的植物群落图，基于2016年3月1日与3月4日航摄获取的1英尺分辨率、4波段正射影像（orthoimagery）的航空像片解译制作而成。植物群落要素采用抬头数字化方式，在ESRI ArcMap软件中完成勾绘，最小制图单元设定为0.5英亩。制图精度评估结果为89%，该值为基于地图边际比例计算得到的总体正确概率。