北京林业大学学报2025，Vol.47Issue(10)：11-18,8.DOI:10.12171/j.1000-1522.20250208
不同间伐强度对大别山黄山松人工林林下植物多样性的长期影响
Long-term effects of different thinning intensities on understory plant diversity of Pinus taiwanensis plantations in Dabieshan Mountain of central China
摘要
Abstract
[Objective]This study aims to investigate the long-term effects of different intensities(low,medium,and high)of thinning on the species richness,diversity,and community structure of understory vegetation in artificial forests of Pinus taiwanensis plantations in the Dabieshan Mountain of central China through long-term fixed-point observations.[Method]This study selected long-term thinning experimental plots of Pinus taiwanensis plantations in the Dabieshan Mountain.Understory plant diversity index and different main soil physicochemical properties were measured after 17 years of thinning intensities of 0(control),10%,20%and 30%,and the indexes of different soil physicochemical properties were determined.The long-term effects of varied thinning intensities on understory plant diversity were analyzed.[Result](1)As thinning intensity increased,soil available phosphorus content gradually decreased,with the rate of decline accelerating progressively.(2)The Margalef richness index,Pielou evenness index,Simpson diversity index and Shannon-Wiener diversity index increased first and then decreased with the increase of thinning intensity.(3)Correlation analysis revealed that surface soil(0-10 cm)organic carbon content was significantly positively correlated with the Pielou evenness index of understory plants.[Conclusion]Understory plants play a key role in soil and water conservation,microclimate regulation,and the maintenance of biodiversity.This study finds that the diversity of understory plants in Pinus taiwanensis plantations first increases and then decreases with increasing thinning intensity.Among them,10%-20%thinning intensity can sustainably enhance understory plant diversity.This finding provides data support and scientific evidence for a better understanding of long-term ecological benefits of thinning in plantations.关键词
黄山松人工林/林下植物/多样性/间伐强度Key words
Pinus taiwanensisplantations/understory plant/diversity/thinning intensity分类
农业科技引用本文复制引用
马闯,刘彦春,王梦涵,马思雨,李青林,苏芳龙,杨中领,李国勇..不同间伐强度对大别山黄山松人工林林下植物多样性的长期影响[J].北京林业大学学报,2025,47(10):11-18,8.基金项目
信阳研究院开放基金(2023DBS07、2023XYZD01、2023XYQN10),河南省研究生教育改革与质量提升工程(YJS2025GZZ26). （2023DBS07、2023XYZD01、2023XYQN10）
