上杭县城区道路绿地植物景观评价

以上杭县城区33条道路绿地植物景观带为对象，采用层次分析法（AHP法）对植物景观综合质量进行评价，以聚类分析法对道路植物物种丰富度、多度和植物应用特征进行分析。结果表明，植物景观带的质量主要受植物物种多样性（C₁）和交通安全性（C₉）影响；以Y_ahp作为分级的基础依据，并以差值百分比分级法划分优秀、良好、欠佳、极差4个等级，33条植物带中优秀的植物景观带（Y_ahp≥6.8）有12个，占总体的36.37％；良好的植物景观带（5.50≤Y_ahp＜6.80）有6个，占总体的18.18％；欠佳的植物景观带（4.00≤Y_ahp＜5.50）有5个，占总体的15.15％；极差植物景观带（Y_ahp＜4.00）有10个，占总体的30.30%。基于植物景观综合质量值（Y_ahp）对33条植物景观带进行聚类分析，可分为4类:第Ⅰ类共12个植物景观带，第Ⅱ类2个植物景观带，第Ⅲ类共7个植物景观带，第Ⅳ类12个植物景观带。研究发现，上杭县城区道路绿地植物景观质量优劣差距明显，同一等级的植物景观带所表现出来的景观特征有较大出入，基于上杭县实际情况对于不佳的景观提出了相对应的提质建议。

Plantscape Evaluation on Urban Road Greenbelt in Shanghang County

Taking the greenbelts of 33 roads in the town of Shanghang county as the research objects，the comprehensive quality of the plantscape was evaluated by the analytic hierarchy process (AHP) method.The plant species richness，abundance and plant application characteristics were analyzed by cluster analysis.The results showed that the quality of plantscape belt was mainly affected by plant species diversity (C₁) and traffic safety (C₉).Based on Y_ahp values,the plantscape quality of the greenbelts were divided by the percentage differential classification method as four grades:outstanding，good，poor，and very poor.Among the 33 belts,12 were excellent (Y_ahp≥6.8)，accounting for 36.37% of the total,6 were good (5.50≤Y_ahp<6.80),accounting for 18.18%,5 were poor (4.00≤Y_ahp<5.50)，accounting for 15.15,10 were very poor (Y_ahp<4.00)，accounting for 30.30%.The cluster analysis of Y_ahp indicated that the plantscape belts could be divided into 4 categories:12,2,7,and 12 belts belonged to class Ⅰ,Ⅱ,Ⅲ,Ⅳ,and Ⅴ,respectively.It was found that there existed significant differences in the quality of the plantscape belt in the town of Shanghang county.The landscape features of the belts within the same level were quite different.Based on the actual situation,suggestions for improving the quality of the poor landscape were put forward.