Grassland transect sampling for 20 Aster prenanthoides

Researcher's went to York University's Grassland's and observed <em>Aster prenanthoides. </em>For this dataset, the researcher's used a 20 m transect and randomly placed it linearly on the ground. Then they selected <em>Aster prenanthoides</em> as their target species because there were many of them in that area. The researcher's walked along the transect tape and observed each <em>Aster prenanthoides</em> that they passed in the 20 m range. It was also made sure to only observe the one's that were within 20 cm left and right of the transect tape. Whenever a <em>Aster prenanthoides </em>was spotted, it was given a number and things like its distance on the transect(in m), its height(m), number of leaves that can be observed(split plant into 4 sections, count leaves in 1 section and make assumption for the whole plant), number of flowers and level of crowding (levels 0-3, 0 being no surrounding plant around target species, 3 being over crowded within 50 cm) were observed.

研究人员前往约克大学草原样地，对细茎紫菀（*Aster prenanthoides*）开展野外观测。本数据集的采集流程如下：研究人员设置一条20米长的样带，并将其线性随机布设至地面；由于该区域内细茎紫菀分布较为丰富，研究人员将其选定为目标观测物种。研究人员沿样带卷尺行进，对20米样带范围内途经的每一株细茎紫菀进行观测，同时确保仅统计样带左右两侧20厘米范围内的个体。每发现一株细茎紫菀，便为其分配编号，并记录以下观测指标：该植株在样带上的水平距离（单位：米）、植株高度（单位：米）、可观测叶片数（将植株划分为4个区域，统计单区域内叶片数量后推算整株总叶片数）、花朵数量，以及拥挤度等级（等级区间为0-3级：0级代表目标物种周围50厘米范围内无其他伴生植物，3级代表50厘米范围内植株过度拥挤）。