The first several years after planting a tree, referred to as the establishment period, are recognized to have the highest annual mortality rates; determining those factors that influence survival of young trees should be considered paramount. This research examined several factors that influence young urban tree mortality: nursery production type (i.e. bare root, gravel bed bare root, container, or balled and burlapped), tree taxa, planting location type, and “planted by” (i.e. “who” planted the tree). The results from this study supported several relationships between project variables and young tree mortality, most notably that trees planted as containerized or balled-and-burlapped rootstock types in boulevards and parks had significantly higher survival rates than bare-root trees. Nursery production type, tree planting location, and tree taxa all had statistically significant impacts on young tree mortality, but “planted by” was not significant. The highest mortality rates were experienced by all trees planted in park/public spaces. The conclusions of this research will help to fill gaps and build upon the existing body of literature that practitioners may draw from to make informed planting and care decisions.

植树后的最初几年，称为建树期，被认为具有最高的年死亡率；确定影响幼树存活的那些因素应被视为最重要的。本研究调查了影响城市幼树死亡率的几个因素：苗圃生产类型（即裸根、砾石床裸根、容器或成球和粗麻布）、树木分类群、种植地点类型和“种植者”（即“谁”种树）。这项研究的结果支持了项目变量与幼树死亡率之间的几种关系，最值得注意的是，在林荫大道和公园中种植为容器或球状和粗麻布砧木类型的树木的存活率明显高于裸根树木。苗圃生产类型、植树地点、和树木类群都对幼树死亡率有统计学意义的影响，但“种植者”不显着。公园/公共场所种植的所有树木的死亡率最高。这项研究的结论将有助于填补空白，并建立在从业者可以借鉴的现有文献基础上，以做出明智的种植和护理决策。