抚育对不同坡向“栽针保阔”红松林群落结构的影响

Effect of Tending on Community Structure of Broad-Leaved Korean Pine Forests at Different Slope Aspects

以长白山区"栽针保阔"红松林为研究对象,采用样带网格调查和重要值研究法,研究了不同抚育方式对阔叶红松林群落结构的影响效果。结果表明:随着透光抚育强度加大,不同坡向的"栽针保阔"红松林群落中,红松优势地位提升,阴坡和半阳坡应保持较低郁闭度,阳坡应保持中等郁闭度;半阳坡红松重要值提升幅度(0.300～0.708)>阳坡(0.271～0.516)>阴坡(0.119～0.470),通过"栽针保阔"途径恢复阔叶红松林要充分考虑坡向环境因子。

A survey was conducted to study the effect of different tending modes on the community structure of broad-leaved Korean pine forests after planting conifers and protecting broadleaves in terms of species importance value by the grid method.Result show that the Korean pine in the broad-leaved forests gradually became dominant with increasing tending intensity.The north-facing slope and semi-south slope should retain a lower canopy density,while the south-facing slope should retain a moderate canopy density.The increase extent of importance value for Korean pine in semi-south slope ranged from 0.300-0.708,followed by south-facing slope（0.271-0.516） and north-facing slope（0.119-0.470）.It shows that more attention should be paid to slope aspect during the recovery process of Korean pine forests after planting conifers and protecting broadleaves.