樟子松人工林二代林更新模式及树种选择

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中图分类号：S791.253 文献标识码：A doi：10.13601/j.issn.1005—5215.2026.01.007

AbstractThedeclineanddeathofPinus sylestrisvar.mongolica plantationsaretheresultof thecombined ffectsof multiplefactors，among whichsoil nutrient imbalanceisoneof the main factors.Taking theregenerationof thesecond-generation Pnus sylestris var.mongolica plantations inthe Hrqin SandyLandas theresearchbackground，14majorffor estationtree species were selected，andthe improvement efects of diferenttree specieson soil nutrients were evaluated through the analysis ofsoil nutrients in forest lands.Theresults showedas folows：thecomprehensive indices of mixed forests under the two modes were1.13andO.96，respectively，both higher thanthatof pure Pinussyluestris var.mongolicaforests （O.51）;the fertilityof mixed forests was significantlyhigherthan thatofpure forests.The mixed forest mode is an ideal modefortheregenerationofPinussylestrisvar.mongolica plantation sites in theHorqin SandyLand.The main tree species are Pinus sylvestris var. mongolica，Pinus densiflora var. zhangwuensis，and Acer truncatum.

Key words Pinus syluestris var. mongolica plantation;regeneration mode;tree species selection

樟子松（Pinussylvestris var.mongolica）是欧洲赤松的一个地理变种，具有耐旱、耐寒、耐瘠薄和适应性强等特性1，由内蒙古呼伦贝尔地区红花尔基沙地引种到辽宁彰武县章古台。（剩余5208字）