| Landscape forest quality is the key to its ability to attract visitors.How to build a healthy and high quality scenic forest,which can meet the public aesthetic needs is a hot spot in the research of landscape forest.Based on the analysis of the present situation of the scenic forest in Nanjing Zijin Moutain,the community structure characteristics of five typical stands were investigated.The SBE method was used to evaluate the landscape of Nanjing Zijin Moutain,and the AHP method was applied to construct the landscape evaluation index system.In order to understand the difference of the beauty degree and the seasonal variation of different types of forest stands,the paper analysed the main influencing landscape elements of the quality of landscape,expecting that it could provide relevant measures about the selection of tree species?the control of community structure and the improvement of landscape quality.The main results were as follows:(1)Through the evaluation of forest landscape of five typical stands in Nanjing Zijin Mountain by SBE and AHP,it was showed that the evaluation results of these two evaluation methods were highly consistent.(2)Through the analysis of the seasonal variation of five kinds of stands by SBE,the result was that the SBE values of different stands were significantly different in different seasons(P<0.01).The SBE value of Liquidambar formosana forest was the highest in Autumn,while the SBE value of Celtis sinensis and Aphananthe aspera mixed forests was the lowest in Winter.The sequence of the beauty of forest was Autumn>Summer>Spring>Winter.(3)Through the analysis of different forest stands by SBE,it was showed that the sequence of the beauty value was Liquidambar formosana forest> Quercus variabilis and Aphananthe aspera mixed forests> Pinus massoniana and Liquidambar formosana mixed forests> Pinus massoniana and Quercus variabilis mixed forests> Celtis sinensis and Aphananthe aspera mixed forests,except in Autumn.The SBE value of Pinus massoniana and Liquidambar formosana mixed forests in Autumn was higher than that of Quercus variabilis and Aphananthe aspera mixed forests.It might be affected by the colour richness,color contrast and shrub height.(4)The main influenced landscape elements had 23 indexes,including color richness,litter,forest uniformity,color contrast,shrub height.The greatest impact on the forest landscape quality was color richness and other aesthetic evaluation indicators.The least effect on the forest landscape quality was DBH and other tree surveying indexes.(5)In order to improve the landscape quality of the forests in the plot,it was necessary to carry out appropriate tending management to Celtis sinensis and Aphananthe aspera mixedforests with poor landscape quality,including the removal of the diameter of the small trees,planting appropriate amount of Celtis sinensis?Liquidambar formosana?Serissa japonica?Ilex cornuta and pruning of main arbor trees. |
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