Disturbance history,species diversity,and structural complexity of a temperate deciduous forest

作     者：Jonathan D.Goode Carson R.Barefoot Justin L.Hart Daniel C.Dey Jonathan D.Goode;Carson R.Barefoot;Justin L.Hart;Daniel C.Dey

作者机构：Department of GeographyUniversity of AlabamaTuscaloosaAL 35487USA Northern Research StationUSDA Forest ServiceColumbiaMO 65211USA 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2020年第31卷第2期

页      面：397-414页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：financially supported by a Joint Venture Agreement between the Northern Research Station USDA Forest Service and the University of Alabama 

主　　题：Canopy gap Quercus(oak) Stand development Succession 

摘      要：Stand structural complexity enhancement is an increasingly popular management objective,especially on public *** stand structures are hypothesized to support a relatively high degree of native forest diversity and be more resistant and resilient to *** structures are characterized by the presence of deadwood and heterogeneity of tree-size classes and tree *** little is known about how discrete disturbance events affect structural complexity and compositional diversity in Quercus-dominated stands at fine spatial scales(***).We established 200.05 ha fixed-radius plots on the Sipsey Wilderness of William *** National Forest in northern Alabama to quantify woody plant species composition and *** were mapped on each plot to quantify overstory structural complexity and compositional *** extracted two cores from all canopy Quercus spp.C 5 cm diameter at breast height to quantify age,recruitment pulses,and reconstruct canopy disturbance *** species diversity in the sampled area was 1.75 for trees,2.08 for saplings,and 1.69 for *** alba had the greatest basal area,and Ostrya virginiana had the highest *** stand exhibited a reverse J-shaped distribution with a q-factor of *** oldest Quercus dated to 1795,and the largest recruitment pulse occurred in the *** mean return interval for intermediateseverity disturbance was 38 *** we documented no relationships between disturbance frequency and compositional diversity at the neighborhood scale(0.05 ha),less frequent disturbance was associated with higher structural complexity(r^2=0.258,p=0.026)at the neighborhood *** suggest that localized disturbance increases species diversity and structural complexity,but these processes are manifest at the stand level and not at the neighborhood *** conclude that the spatial variability(***,shape,orientation,microsite conditions)is likel