气候变化领域集成服务门户(CCPortal): Predicting oak regeneration success at the stem exclusion stage of stand development in upland hardwood forests

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DOI	10.1016/j.foreco.2020.118093
	Predicting oak regeneration success at the stem exclusion stage of stand development in upland hardwood forests
	Graboski L.E.; Steiner K.C.; McDill M.E.; Finley J.C.
发表日期	2020
ISSN	0378-1127
卷号	465
英文摘要	Oaks (Quercus spp.) are becoming less abundant in most of the Central Hardwood Region of the eastern United States, and this is creating shifts in forest composition that will likely have important economic and ecological consequences. In large measure, these changes originate with deficiencies in the oak regeneration cohort preceding stand-replacement disturbances such as timber harvest. To sustain the oak resource, managers need better information on the connection between pre-harvest and early stand conditions and regeneration outcomes. In this study, we used direct observations of oak seedling dominance in the stem exclusion stage of stand development (mean age = 17.4 years) to model the probability of successful regeneration during stand initiation as a function of stand conditions before and after harvest (ages −1, 1, 4, and 7 years). For pre-harvest conditions, the most predictive model was based solely on the aggregate height of advance regeneration oak seedlings >15 cm in sample plots. As expected, post-harvest models were more predictive, and increasingly more predictive with the passage of time, and they were optimized by contrasting the height of the plot-dominant oak seedling with the heights of competing tree species. The predictive power of post-harvest models increased most between ages 1 and 4 years and only slightly between ages 4 and 7, indicating that age 4 is an optimal time to evaluate opportunities to favor oak regeneration with early silvicultural interventions. Of the two most common competitors, black birch (Betula lenta) had the more inhibitory effect on the success of oak regeneration when it was present. However, red maple (Acer rubrum) was the more important competitor because of its very high frequency of occurrence in plots occupied by oak seedlings. © 2020 Elsevier B.V.
关键词	Ecology Forecasting Hardwoods Harvesting Models Advance Advance regenerations Central hardwood regions Ecological consequences Quercus Regeneration Stocking Very high frequency Reforestation deciduous tree ecological modeling forest ecosystem regeneration seedling timber harvesting Ecology Forecasts Hardwoods Harvesting Models Quercus United States Acer rubrum Betula lenta Betula nigra Quercus
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132834
推荐引用方式 GB/T 7714	Graboski L.E.,Steiner K.C.,McDill M.E.,et al. Predicting oak regeneration success at the stem exclusion stage of stand development in upland hardwood forests[J]. Forest Ecology and Management,2020,465.
APA	Graboski L.E.,Steiner K.C.,McDill M.E.,&Finley J.C..(2020).Predicting oak regeneration success at the stem exclusion stage of stand development in upland hardwood forests.,465.
MLA	Graboski L.E.,et al."Predicting oak regeneration success at the stem exclusion stage of stand development in upland hardwood forests".465(2020).