针对中国南方地区人工林树种林种单一、稳定性较差、物种多样性低，以至于生态服务功能低下，优质森林资源储备不足的问题，从改善林种结构，提高林分单位面积产量及生态效益出发，开展了南方主要珍贵阔叶树种多树种混交造林技术研究。结果表明，采用多树种混交模式，树种生长显著加快，单位面积总蓄积量增加，且在促进林木胸径生长方面效果显著，有利于大径材的培育；此外，多树种混交能够降低凋落物层C/N，养分分解转化快，生态稳定性更强。因此，珍贵树种多树种混交栽培模式具有可行性。%according to the artificial forests in the southern area of our country existing single tree species for forestation,forest structure is unreasonable,poor stability of artificial forest,species diversity is low so that the ecosystem service function is low,lack of high-quality forest resources problem. carried out mainly precious trees planting technique of mixed forest of multi species,to improve the forest structure,increase the yield and ecological benefits of forest. The results show that the growth of multi species mixed model accelerated significantly,and the total volume per unit area are increased,furthermore,DBH growth promot⁃ing effect is obvious,all of this indicates that the multi mixed mode is in favor of large diameter timber cultivation;and it can reduce litter layer C/N,the decomposition and transformation of nutrients is faster, and ecological stability of multi mixed forest is stronger too. Therefore,precious tree species mixed cultiva⁃tion mode is feasible.
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