Tree regeneration after fire: Aspen removal experiment, biomass of 2002 growth of transplanted seedlings

This research was intended to address the general question of whether asexual stem regeneration of trembling aspen (Populus tremuloides Michx.) reduces rates of establishment and growth of potential invading conifer species during the initial years following fire. Interactions between aspen and conifers were studied under natural conditions in a burned aspen stand with a high potential for aspen re-sprouting. The study contributes to our understanding of whether competitive interactions between tree seedlings are likely to help maintain deciduous stands across disturbance cycles by reducing the potential for successful conifer establishment. Data are biomass (g dry weight) of current year growth (2002, leaves + stems) of transplanted seedlings. Values are averages of up to 3 seedlings per plot (fewer where seedlings died).本研究旨在解答这一科学问题：颤杨（Populus tremuloides Michx.）的无性茎干再生，是否会在火灾发生后的初始数年，降低潜在入侵针叶树种的定植率与生长速率。研究在一片具备高颤杨萌蘖潜力的火烧杨树林分的自然环境中开展，分析了杨木与针叶树之间的种间相互作用。本研究可为理解“树木幼苗间的竞争互作是否可通过抑制针叶树成功定植，从而维持干扰周期内的落叶林分结构”提供支撑。 本数据集收录移植幼苗当年生生长组织（2002年，叶片+茎干）的生物量（单位：克干重）。各地块的生物量数值为最多3株幼苗的平均值；若存在幼苗死亡，则单地块有效样本量将相应减少。