Growth data was collected on four graminoid species on Arctic LTER experimental plots in moist acidic tussock and dry heath tundra 2004, Toolik Field Station, Alaska.

Weekly growth of plant species of three growth forms were measured in the ninth year of a long-term experiment at Toolik Field Station. The experimental treatments excluded small and large mammalian herbivores and increased soil nutrients in two arctic Alaskan tundra communities: moist acidic tussock and dry heath. This data set reports the four graminoid (both tussock and rhizomatous forms) species. Please see 2004lggrbnan for Betula nana (dwarf shrub) growth data.

本数据集采集自阿拉斯加Toolik野外站（Toolik Field Station）的长期定位试验第9年，针对三种生长型的植物物种的周生长动态开展测定。试验在两类阿拉斯加北极苔原群落——湿润酸性草丛（moist acidic tussock）与干石楠灌丛（dry heath）中设置处理组，通过排除小型与大型哺乳动物植食动物、添加土壤养分开展控制实验。本数据集仅收录4种禾草类（graminoid）植物（涵盖丛生型与根茎型两类生长形式）的相关数据。有关矮桦（Betula nana，矮灌木（dwarf shrub））的生长数据，请查阅数据集2004lggrbnan。