茂名市公园绿地植物群落景观质量评价

Landscape Quality Evaluation of Green Space Plant Communities in Maoming City Park

公园绿地植物群落是衡量城市绿地系统建设水平的重要指标,因此有必要对公园绿地植物群落景观进行评估。采用层次分析法,构建植物群落景观评价体系,以茂名市7个城市公园为案例地进行实证研究。研究表明:(1)准则层中,“生态价值”权重值为(0.6483)>“景观价值”权重值(0.2297)>“社会价值”权重值为(0.122);(2)总权重值排序前3名分别为物种丰富(0.1947)、生长状况(0.1796)和群落稳定性(0.1285),排名后2名为与环境的协调性(0.0144)和景观停留(0.0106);(3)对50个景观单元评价中,等级为第Ⅰ类有3个、第Ⅱ类有43个、第Ⅲ类有4个、无第Ⅳ等级,占比分别为6%、86%、8%和0%。茂名市公园绿地植物群落景观质量总体较好,但优质的植物景观群落相对缺乏。根据研究结果,对植物群落的配置方式提出优化意见。

Park green space plant community is an important indicator to measure the construction level of urban green space system,so it is necessary to evaluate the park green space plant community landscape.Using the hierarchical analysis method,we constructed a plant community landscape evaluation system,and conducted an empirical study with seven urban parks in Maoming as case sites.The study shows that:(1)in the criterion layer,the weight value of“ecological value”is(0.6483)>“landscape value”(0.2297)>“social value”(0.122)(0.122);(2)The top three ranked total weight values are species richness(0.1947),growth condition(0.1796)and community stability(0.1285),and the next two ranked are harmony with environment(0.0144)and landscape stay(0.0106);(3)Among the 50 landscape units evaluated,there are 3 of class I,43 of class II and 4 of class III.43 and Class III have 4,no Class IV,accounting for 6%,86%,8%and 0%respectively.The landscape quality of the plant communities in Maoming city park is generally good,but there is a relative lack of high-quality plant landscape communities.Based on the results of the study,the optimization of the configuration of plant communities is proposed.