闽东南海岛台湾相思林春季景观质量评价研究——以平潭岛为例

台湾相思抗风性强，树形优美，花色金黄，是闽东南海岛山地最主要的防风与景观树种。为探讨影响海岛台湾相思林景观质量的因子，以平潭岛君山、王爷山、牛寨山为研究区域，以平潭岛春季盛花期的台湾相思林为对象，选取2017-2019年拍摄的该区域台湾相思林春季照片42张，运用美景度评判法（SBE）对其景观质量进行评判，并对台湾相思林景观进行要素分解，分成11个项目，每项再分成2~4个类目，共34个类目。接着通过相关性和回归性分析,逐步剔除了对台湾相思林景观效果影响较小的6个因子。结果表明，保留的5个因子按贡献率大小依次为灰色比（34.7%）、枝条杂乱度（33.8%）、枯枝断梢（16.8%)、林冠面特征（8.8%）、主色彩比例（5.9%），构建了福建闽东海岛台湾相思林春季景观质量的评价模型，为海岛生态景观林质量提升提供理论参考和依据。

Evaluation on Landscape Quality of Acacia confusa in Spring in the Southeast Islands of Fujian——A Case Study of Pingtan Island

Acacia confusa has strong wind resistance,beautiful tree form and golden flowers,it is the most important wind-resistant and landscape tree species in the mountainous area of southeast Fujian islands.To explore the factors affecting the landscape quality of A.confusa forest in the islands,we took Jun moutain,Wangye moutain,and Niuzhai moutain in Pingtan as the study areas,A.confusa forests in full bloom as the study objects,selecting 42 photos that were taken between 2017-2019 in the regions to evaluate the landscape quality of A.confusa forest in spring with the method of scenic beauty evaluation (SBE).In addition,factors related to the landscape of A.confusa were divided into 11 items,each item was further divided into 2-4 categories,34 categories were obtained together.And then through correlation and regression analysis,six factors which had little influence on the landscape quality were gradually eliminated.According to the contribution rate,five retention factors were grayness ratio (34.7%),confusion of branch(33.8%),the dead branches off tip (16.8%),canopy surface features (8.8%),the main color ratio (5.9%),from which the A.confusa forest landscape quality evaluation model in spring in the southeast islands of Fujian was established,to provide the theoretical references and basis for improving the quality of ecological landscape forest in the islands.