摘要
在章古台樟子松固沙林采伐迹地上,按照不同沙丘部位,选择不同造林树种进行了杨树用材林模式、樟子松杨树针阔混交造林模式、阔叶树混交造林模式、乔灌混交造林模式、针针混交造林模式等5种更新模式造林,通过调查分析可知,樟子松混交林的生长量与生态效益显著高于樟子松纯林。在沙丘下部与丘间低地杨树的生长量明显高于樟子松。降低造林密度,增加杨树造林比例,可改善林分结构,提高经济效益。多树种块状混交,适用于地块零散、地形复杂的采伐迹地更新。
On stub land of sand fixation plantations of Pinus sylvestris var.mongolica in Zhanggutai,according to the different parts of the dunes,models of poplar timber,Pinus sylvestris var.mongolica mixed with poplar（coniferous trees mixed with broadleaved trees）,broadleaf mixed forest,arbor,shrub and mixed forest,coniferous trees mixed with coniferous trees were selected to plant.Through investigation analysis,the growth eco-efficiency of mixed forest of P.sylvestris var.mongolica were significantly higher than that of the pure forest of P.sylvestris var.mongolica.The growth of poplar is significantly higher than that of P.sylvestris var.mongolica in the lower part of dunes interdune lowlands.Reducing planting density,increasing the proportion of poplar planting can improve the forest structure eco-efficiency.Multi-block mixed species is suitable for regeneration on stub land which has the characteristics of land fragmentation complex terrain.
出处
《防护林科技》
2011年第3期37-39,共3页
Protection Forest Science and Technology
关键词
沙丘部位
更新造林
樟子松
杨树
造林模式
dune area
reforestation
Pinus sylvestris var.mongolica
poplar
afforestation model
