择伐对思茅松天然林乔木种间与种内关系的影响
贾呈鑫卓;李帅锋;苏建荣;苏磊
【期刊名称】《植物生态学报》 【年(卷),期】2014(038)012
【摘要】Aims Our objectives were to investigate the inter-and intra-specific interactions of trees in a natural Pinus kesiya forest after three different selective logging disturbances,and to examine the impact of selective logging on disturbance intensity for sustainable forest management.Methods
Niche
breadth,niche
overlap,interspecific
associations,Hegyi's single-tree competition index model and M.Godron methods were used to analyze the inter-and intra-specific interactions of trees based on the field data collected from 81 small quadrats in nine plots in a natural P kesiya forest in Jinggu County,Yunnan Province.Important findings (1) Selective logging disturbance changed the relative dominance of most tree species except P.kesiya.The niche breadth of P.kesiya population increased with increases in disturbance intensity.The niche breadth was greatest in P.kesiya and Schima wallichii among all tree species under a severe disturbance.(2) The interspecific relationship of tree populations changed was affected by disturbance intensity.The niche overlap in the intermediate disturbance communities was apparently higher than those without disturbance or under a severe disturbance.In all the three communities,the niche overlap between
择伐对思茅松天然林乔木种间与种内关系的影响
