为提升福建长汀县水土流失区马尾松林分质量,开展套种阔叶树试验。结果表明:不同套种模式对马尾松树高和枝下高的影响显著,其中套种无患子最有利于促进马尾松树高和枝下高生长,分别达14.50m和9.57m,其次是套种木荷模式,马尾松平均树高和枝下高分别为10.43m和9.50m,两者差异不显著;套种的木荷长势最佳,其平均胸径为6.9cm,平均树高达7.4m。套种6年的马尾松林分的物种多样性分析结果显示,套种无患子有利于提高马尾松林分的物种多样性,其灌木层和草本层的Shannon-Wienner指数分别为1.09和1.24,物种丰富度指数分别为3.91和2.39。进一步分析套种模式对马尾松林分的土壤理化性质的影响,结果表明,套种闽叶树虽未对土壤物理性质产生显著影响,但明显改善了林分土壤的养分,其中以套种枫香或木荷的模式效果最佳。

In order to improve the quality of Pinus massoniana stand in soil erosion area of Changting County,Fujian Province,an experiment of interplanting broad-leaved tree was carried out.The results showed that different interplanting patterns had significant effects on the tree height and subbranch height of Pinus massoniana.Interplanting Sapindus saponaria was most beneficial to promote the growth of tree height and subbranch height of Pinus massoniana,which reached 14.50m and 9.57m respectively.The second was interplanting Schima superba model.The average tree height and under-branch height of Pinus massoniana were 10.43m and 9.50m respectively,and the difference between them was not significant.The interplanting Schima superba performed best growth,with an average diameter at breast height of 6.9cm and an average tree height of 7.4m.The results of species diversity analysis of Pinus massoniana forest with 6 years of interplanting showed that the interplanting of Sapindus saponaria was beneficial to improve the species diversity of Pinus massoniana forest,and the Shannon-Wienner index of shrub layer and herb layer were 1.09 and 1.24 respectively,and the species richness index were 3.91 and 2.39 respectively.The effects of interplanting mode on soil physical and chemical properties of Pinus massoniana stand were further analyzed in the paper.The results showed that interplanting broad-leaf tree did not significantly affect soil physical properties,while the soil nutrients of the stand were obviously improved.The mode of interplanting Liquidambar formosana or Schima superba had the best effect.