Data on the impacts of garlic mustard from a weeding experiment in Pennsylvania 2006-2016

Data were collected on the abundance of plants in a 10-year weeding experiment of garlic mustard, located at Trillium Trails Park in Pennsylvania. Garlic mustard was weeded annually to suppress its abundance, and the impacts of garlic mustard were measured based on the response of the plant community to garlic mustard weeding. Because garlic mustard is known to suppress mycorrhizal fungi, the mycorrhizal status of each plant species was determined and recorded. The experiment was arranged in a blocked design, where plots had subareas with and without garlic mustard removal. Cover of each plant species was measured as the average percent cover recorded in 18 2x2 meter quadrats with garlic mustard removed per plot and 18 2x2 meter subplots with garlic mustard remaining per plot.

本数据集采集自宾夕法尼亚州延龄草步道公园（Trillium Trails Park）开展的一项为期10年的蒜芥（garlic mustard）除草实验，相关数据围绕实验中植物的种群丰度展开。实验每年对蒜芥进行人工拔除以抑制其种群扩张，并通过植物群落对该除草处理的响应，评估蒜芥的生态影响。鉴于已有研究表明蒜芥会抑制菌根真菌（mycorrhizal fungi）的生长，研究人员同时测定并记录了每一植物物种的菌根状况（mycorrhizal status）。本实验采用区组设计（blocked design），每个样地内均设置有拔除蒜芥与保留蒜芥的子区域。每种植物的盖度以两类子样方的平均百分盖度计算：每个样地内布设18个2×2米的已拔除蒜芥样方，以及18个2×2米的保留蒜芥子样方。