Live plant imports: the major pathway for forest insect and pathogen invasions of the US

Data provided here correspond to that of Figure 1 in Liebhold et al. 2012. Live plant imports: the major pathway for forest insect and pathogen invasions of the US. Front Ecol Environ 10(3): 135-143. doi: 10.1890/110198. All live plants intended for retail and propagative use were used. In addition to including plants with roots, the commodity category--also referred to as "plants for planting" or "nursery stock"--encompasses bulbs, roots, and unrooted cuttings, but excludes cut flowers, ornamental foliage, and seed.本数据集所用数据对应Liebhold等人2012年发表论文中的图1数据，该论文题为《活体植物进口：美国森林昆虫与病原物入侵的主要途径》，刊载于《Frontiers in Ecology and the Environment》（缩写为Front Ecol Environ）2012年第10卷第3期，页码135至143，DOI：10.1890/110198。本研究纳入所有用于零售及繁殖用途的活体植物。该商品类别（亦称为“种植用植物（plants for planting）”或“苗木（nursery stock）”）除包含带根植物外，还涵盖球茎、裸根繁殖材料及无根插穗，但不包含切花、观赏叶材与种子。