不同林型物种多样性研究  

Study on Species Diversity of Different Forest Types

作　　者：田永霞 

机构地区：[1]宽甸县林业局,辽宁丹东118200

出　　处：《防护林科技》2016年第1期37-39,共3页Protection Forest Science and Technology

摘　　要：通过对红松+白桦人工混交林、红松+色赤杨人工混交林和红松纯林等3种不同林型物种的多样性进行分析,结果表明:红松+白桦和红松+色赤杨人工针阔混交林植物种类丰富,数量较多,远远高于红松纯林,各层次的物种多样性也明显好于红松纯林;人工针阔混交林层次结构复杂,垂直多样性丰富,而红松纯林只有一个主林冠层,灌木层、草本层的垂直结构单一。人工针阔混交林对多层次物种多样性的恢复和提高有很大作用。Species diversity of three forest types(mixture plantation of Pinus koraiensis+Betula platyphylla,mixture plantation of Pinus koraiensis+Alnus sibiricaand pure forest of Pinus koraiensis)were analyzed.Result shows that mixed plantation of coniferous and broadleaf of Pinus koraiensis+Betula platyphylla and Pinus koraiensis+Alnus sibirica all have rich species,more number,and are much higher than that of pure forest of Pinus koraiensis;species diversity of all levels are optimal than that of pure forest of Pinus koraiensis;mixed plantation of coniferous and broadleaf have complicate levels,and rich vertical diversity;the pure forest of Pinus koraiensis has only one main canopy layer;the vertical structure of shrub layer,herb layer are single.Mixed plantations of coniferous and broadleaf have significant roles on restoration and improvement on multi-level species diversity.

关 键 词：红松+白桦人工混交林 红桦+色赤杨人工混交林 红松纯林 物种多样性 

分 类 号：S714[农业科学—林学]