York University Grasslands- Dandelion Study

The York University grassland was used to collect data on the abundance, height, leaf and flower count of dandelions. Transect tape was randomly placed and was used to measure the location of the plants. Distance was measured by locating the target plant species and recording the value on the transect. Once the target plant species was located the total number of leaves and flowers was also recorded by counting the leaves and flowers. All of the 50 samples found did not have any flowers as they have reached the end of their growth season. The height of the plant was measured using a ruler and recording the distance between the stem of the plant and the start of the leaves. Cover was estimated by observing the immediate nearby area of the sample plant and was recorded as a value between 0 and 3, with 0 representing no plants, 1 indicating few plants nearby, 2 representing quite a few plants, and 3 indicating that the sample plant was crowded by other plants.

本数据集采集自约克大学草地，用于获取蒲公英的丰度、株高、叶片数与花数相关数据。研究人员随机布设样带卷尺（transect tape），以此测定植株的空间位置：通过定位目标植物物种并记录样带上的对应数值以获取距离参数。定位目标植株后，同步统计其总叶片数与总花数。本次共采集到50个样本，所有样本均未开花，原因是其已进入生长季末期。植株高度采用直尺测量，记录植株茎部与叶片起始处的距离。植被盖度通过观察样本植株的紧邻周边区域进行估算，取值范围为0至3：0代表周边无植株，1代表周边植株稀少，2代表周边植株数量较多，3代表样本植株被其他植株紧密簇拥。