Tree regeneration after fire: Aspen removal experiment, aboveground biomass of seedlings from sown seed

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 total aboveground biomass (g dry weight) of seedlings derived from sown seed (leaves and stems combined). Values are averages of all seedlings in a plot. In control plots, BS and WS were pooled (indicated as SPR).本研究旨在解答这一一般性科学问题：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。研究在一处火灾后、颤杨萌蘖潜力极高的天然火烧杨林中，于自然条件下开展了杨木与针叶树的种间互作研究。本研究有助于阐明：树木幼苗间的竞争互作，是否可通过降低针叶树成功定植的可能性，助力落叶林分在干扰循环中得以维持。 本数据集包含由播种种子萌发得到的幼苗的总地上生物量（单位：克干重，叶片与茎干合并统计）。数值为单样地内所有幼苗的平均生物量。在对照样地中，BS与WS两类样本将合并统计（标记为SPR）。