Giant sequoia is a famously massive and long-lived tree endemic to the Sierra Nevada of California, whose persistence is threatened by a changing climate and an altered disturbance regime. One approach for protecting threatened species is to incorporate them into working landscapes. In a forestry context, the objectives of a working landscape include the production of timber and the storage of carbon. Given its potential for rapid growth, an understanding of the growth-density relationships for giant sequoia is a necessity for planning future management for these common management objectives. To investigate the effect of initial planting density on both individual tree and stand level characteristics, we used repeated measures data from a 28-year-old giant sequoia spacing trial. After 28 years, survival among all spacing treatments was high (>98%). Individual bole volume increased with greater growing space allocated per tree. Although initial relative growth rates based on bole volume differed among spacing treatments, relative growth rates were similar after 21 years. At the stand level, total stand volume was similar across all spacing treatments after 28 years. However, wider spacing treatments exhibited higher amounts of merchantable volume. After 28 years, stands of giant sequoia sequestered approximately 92.2 Mg ha⁻¹ across all spacing treatments. Our results show that giant sequoias are able to produce merchantable timber at a young age and sequester large amounts of carbon in a relatively short amount of time, supporting that giant sequoia is a promising candidate species for planting for timber production as well as carbon sequestration.

巨型红杉是加利福尼亚内华达山脉特有的著名的大规模且长寿树，其持久性受到气候变化和干扰制度变化的威胁。保护受威胁物种的一种方法是将其纳入工作环境。在林业方面，工作景观的目标包括木材生产和碳储存。鉴于其具有快速增长的潜力，因此对于大型红杉的增长密度关系的理解对于为这些共同的管理目标规划未来的管理是必要的。为了调查初始种植密度对单个树木和林分水平特征的影响，我们使用了一项来自28年的巨型红杉间距试验的重复测量数据。28年后，所有间隔治疗的存活率均很高（> 98％）。随着每棵树分配更大的生长空间，个体的胆量增加。尽管在间隔处理中，基于胆汁量的初始相对增长率有所不同，但21年后的相对增长率相似。在展位水平上，28年后所有间隔治疗的总展位量相似。然而，更宽的间隔处理表现出更高的可交易量。28年后，巨型红杉林的固存量约为92.2 Mg ha 较宽的间隔处理表现出较高的可交易量。28年后，巨型红杉林的固存量约为92.2 Mg ha 较宽的间隔处理表现出较高的可交易量。28年后，巨型红杉林的固存量约为92.2 Mg ha在所有间距处理中均为^-1。我们的结果表明，巨型红杉能够在很短的时间内生产出可买卖的木材，并在相对较短的时间内隔离大量的碳，这证明巨型红杉是用于木材生产和碳封存的有前途的候选物种。