Root overlap and allocation of above- and belowground growth of European beech in pure and mixed stands of Douglas fir and Norway spruce

作     者：Amani S.Lwila Christian Ammer Oliver Gailing Ludger Leinemann Martina Mund Amani S.Lwila;Christian Ammer;Oliver Gailing;Ludger Leinemann;Martina Mund

作者机构：Department of Silviculture&Forest Ecology of the Temperate ZonesUniversity of GöttingenBüsgenweg 137077GöttingenGermany Center for Biodiversity and Sustainable Land-UseUniversity of GöttingenBüsgenweg 137077GöttingenGermany Department of Forest Genetics and Forest Tree BreedingFaculty of Forest Sciences and Forest EcologyUniversity of GöttingenBüsgenweg 237077GöttingenGermany Forestry Research and Competence Centre GothaJägerstraße 1D-99867Germany 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2024年第11卷第5期

页      面：591-602页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：part of the Research Training Group 2300 funded by the German research funding organization (Deutsche Forschungsgemeinschaft-DFG) Grand id:316045089 

主　　题：Fine root growth Stem growth Trade-off Cost-benefit ratio Belowground territoriality Conspecific neighbors Heterospecific neighbors 

摘      要：Site conditions and species identity have a combined effect on fine root growth of trees in pure and mixed ***,mechanisms that may contribute to this effect are rarely studied,even though they are essential to assess the potential of species to cope with climate *** study examined fine root overlap and the linkage between fine root and stem growth of European beech(Fagus sylvatica)growing in pure and mixed stands with Douglas fir(Pseudotsuga menziesii)or Norway spruce(Picea abies)at two different study sites in northwestern *** study sites represented substantially different soil and climate *** each site,three stands,and at each stand,three pairs of trees were *** the pure beech stand,the pairs consisted of two beech trees,while in the mixed stands each pair was composed of a beech tree and a *** each pair,three evenly spaced soil cores were taken monthly throughout the growing *** the pure beech stands,microsatellite markers were used to assign the fine roots to individual *** in stem diameter of beech were quantified and then upscaled to aboveground wood productivity with automatic high-resolution circumference *** found that fine root overlap between neighboring trees varied independently of the distance between the paired trees or the stand types(pure versus mixed stands),indicating that there was no territorial *** wood productivity(wood NPP)and fine root productivity(root NPP)showed similar unimodal seasonal patterns,peaking in ***,this pattern was more distinct for root NPP,and root NPP started earlier and lasted longer than wood *** influence of site conditions on the variation in wood and root NPP of beech was stronger than that of stand *** NPP was,as expected,higher at the richer site than at the poorer *** contrast,root NPP was higher at the poorer than at the richer *** concluded that beech can respond to limited resources