摘要
选取典型样地对小五台山国家级自然保护区红桦林的群落结构和各项林分因子进行了调查,分析了乔木层、灌木层和草本层的植物种类组成,绘制了乔木层中红桦、云杉、华北落叶松和黄花柳4个主要树种的种群年龄结构图,结果表明:红桦是乔木层的建群种和优势种,和云杉、华北落叶松组成了针阔混交林;灌木层以山地耐寒种类为主,其中云杉幼树成为灌木层的优势种;种群年龄结构分析表明,红桦种群呈稳定型,落叶松和黄花柳种群呈衰退型,云杉种群呈增长型;由于处于中幼林龄期,红桦林目前是稳定的针阔混交林,长期将向云杉纯林演替。
Based on the field investigation of the Betula ablo-sinensis forest community structure and succession in Xiaowutai mountain nature reserve. The species composition of the tree layer, shrub layer and herb layer were analyzed. The population structure charts of main species were made. It showed that Betula ablo-sinensis is constructive and dominant species in tree layer, Betula ablo-sinensis, Picea wilsonii and Larix principis-rupprechtii make up mixed forest. The cold resistant species are in the majority, Picea wilsonii is the dominant species in shrub layer. The Betula ablo-sinensis population is stable type, Larix principis-rupprechtii and Salix sinica population are recessionary type, and Picea wilsonii population is growing type. Because of middle-aged, the Betula ablo-sinensis forest is stable raixed forest in early stage of succession, but it will change to Picea wilsonii forest in late stage.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2017年第5期69-73,共5页
Journal of Central South University of Forestry & Technology
基金
林业公益性行业科研专项项目(201204101-8)
河北省科技支撑计划项目(11240615D)
关键词
红桦林
针阔混交林
群落结构
森林演替
小五台山
Betula ablo-sinensis forest
mixed forest
community structure
forest succession
Xiaowutai mountain
