西北林学院学报2017，Vol.32Issue(2)：37-42,6.DOI:10.3969/j.issn.1001-7461.2017.02.06
抚育间伐对小陇山林区华山松林下植物多样性的影响
Effects of Thinning on the Diversity of Undergrowth of Pinus armandii Plantation in Xiaolong Mountainous Region
摘要
Abstract
In order to explore the effect of thinning intensity on plant diversity of undergrowth of Pinus arrnandii plantation,the species richness index,diversity index and evenness index of shrub and herbage under light thinning (20％),medium thinning(30％) and heavy thinning (40％) were investigated taking the un-thinned forest as the control.The typical plots were set in a 29 year-old P.armandii plantation in Gansu Xiaolong Mountainous region,and the common species and similarity coefficient were compared between different areas.The results showed that 1) with the increase of thinning intensity,species of undergrowth increased,and the plant diversity and evenness indices were the highest under heavy thinning intensity.2) The species richness in shady slope was much greater than sunny slope,but there was no significant influence of slope aspect on the diversity and evenness indices.3) There were more common species in sample areas after thinning.However,the similarity coefficient in thinned forest was lower than un-thinned forest.As a result,heavy thinning could sustain higher level of plant diversity under P.armnandii plantation in Xiaolongshan forest area,and the species richness in shady slope was the largest.关键词
华山松人工林/间伐强度/坡向/植物多样性Key words
Pinus armandii plantation/thinning intensity/slope aspect/plant diversity分类
农业科技引用本文复制引用
张小鹏,王得祥,张鹏,张岗岗,刘文桢,沈亚洲,张晓梅..抚育间伐对小陇山林区华山松林下植物多样性的影响[J].西北林学院学报,2017,32(2):37-42,6.基金项目
国家自然科学基金(31470644). （31470644）
