Tree regeneration after fire: Aspen removal experiment, organic layer depth measurments 2001, 2002

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 organic layer depths (cm) sampled with a hand corer on 20 July 2001 and 12 July 2002. Measurements made on 16 August 2002 have been omitted because they are inconsistent with earlier measurements and probably reflect observer bias.

本研究旨在解答一项一般性科学问题：颤杨（Populus tremuloides Michx.）的无性茎再生，是否会降低火灾后初期阶段潜在入侵针叶树种的定植速率与生长速率。
研究在一片具备较高杨树萌蘖潜力的火烧杨树林分中，于自然条件下开展了杨树与针叶树间相互作用的调查。
本研究有助于深化我们对以下问题的认知：树木幼苗间的竞争相互作用，是否可通过抑制针叶树成功定植的可能性，助力落叶林群在干扰循环中得以维持。
本数据集包含2001年7月20日与2002年7月12日采用手持取样钻采集的有机层厚度（单位：厘米）数据。2002年8月16日的测量数据因与前期测量结果不一致，且大概率存在观测者偏差，已予以剔除。