北京石质山区主要景观树种根系功能性状对干瘠环境的适应
Adaptation of root functional traits of ornamental tree species to dry and barren site in stony mountainous area of Beijing
[目的]以北京石质山区主要观赏树种(黄栌、山桃、山杏、元宝枫、栓皮栎)为研究对象,采用挖掘法获取树木细根,测定细根参数。分析干瘠立地中不同树种根系功能性状的变化及差异,研究不同树种在干瘠环境中的适应对策。[方法]根据田间持水量和石砾含量分别设置 4个干瘠梯度(轻度、中度、重度、极度),探讨干瘠环境下5种树种根系功能性状的差异及其对干瘠胁迫的适应途径。[结果](1)干旱、瘠薄均对树木根系功能性状产生影响,其中根系性状对干旱的敏感度比瘠薄及交互作用大…查看全部>>
[Objective]In this study,the main ornamental tree species in the rocky mountainous area(Cotinus coggygria,Acer truncatum,Amygdalus davidiana,Armeniaca sibirica,and Quercus variabilis)were used as the research object,and the fine roots of the trees were obtained by excavation method,and the fine root parameters were determined.Analyze the changes and differences in root functional traits of different tree species in dry and barren sites,and study the adaptati…查看全部>>
韦柳端;徐程扬;
ornamental tree species dry and barren sites root functional traits adaptation strategies
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