Comprehensive Evaluation of Ornamental Characteristics of Lespedeza Plants Based on Analytic Hierarchy Process
In order to establish a comprehensive evaluation system for the ornamental quality of Lespedeza plants,a structural model for the ornamental quality evaluation of Lespedeza plants was constructed using the analytic hierarchy process(AHP)method.The model was used to comprehensively evaluate the ornamental quality of 12 Lespedeza species(varieties).By determining the relevant formulas,evaluation criteria,and total weight coefficients,the comprehensive ornamental rating of each species(variety)was calculated.The results showed that flower color,flowering period,inflorescence size,and drought and cold tolerance accounted for a significant average weight among the 13 indicators(Wi≥0.09),making them important indicators for evaluating the ornamental value of Lespedeza plants.The scores for characteristics such as large and thick flowers,long flowering period,lush flowers and leaves,and cold and drought resistance were relatively high,all of which were 5 points in the scoring criteria.According to the scoring criteria,12 species(varieties)of Lespedeza were divided into 4 levels.The three plants in the genus Lespedeza with the highest comprehensive scores are L.bicolor,L.bicolor'Xiarixiangxue'and L.floribunda.These three species of Lespedeza have high ornamental value,strong adaptability,and economic value,and are good ornamental plants for gardens.They have good prospects for garden application in Hebei region.
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