Peterson Shirttail coordinates 20 random subsets survivors

This is an Excel spreadsheet, containing 20 randomly chosen subsets of tree coordinates from the Shirttail site. These 20 subsets consist of coordinates of 62 randomly chosen trees to simulate the 62 observed standing (postdisturbance) trees at Shirttail; each subset is made up of a different random selection from among the 319 predisturbance trees. The first column lists the subset, and the second and third column give the x, y coordinates of a selected tree. The first column is integer data, and the second and third columns are decimal data. Coordinates are in m, from an arbitrary starting point in the southwest of the study site.本数据集为Excel电子表格，包含取自Shirttail样地的20组随机选取的树木坐标子集。该20个子集均由62株随机选取的树木坐标组成，用于模拟Shirttail样地内观测到的62株灾后存活树木；每个子集均从319株灾前树木中随机抽取不同的树木组合构建而成。表格第一列为子集编号，第二、第三列分别标注所选树木的x、y坐标。第一列为整数型数据，第二、第三列为十进制小数数据。坐标单位为米，以研究样地西南方向的任意设定起始点作为坐标原点。