合肥市公园绿地植物群落物种多样性与生态效益分析——以杏花公园、庐州公园、天鹅湖公园为例

Species Diversity and Ecological Benefit Analysis of Plant Community in Hefei Park Green Space:Taking Xinghua Park,Luzhou Park,Swan Lake Park as Examples

通过对选择的3个合肥市典型公园的28个植物群落样地进行实地调查,对不同生境类型植物群落的物种构成、物种多样性等方面进行分析,并参考相关文献中不同植物相关计算参数,定量分析不同生境类型植物群落的生态效益产出。得到的结果包括:(1)调查记录共有植物105种,分属于48科88属,其中应用较多的有蔷薇科、禾本科和木兰科,乡土树种共24种,占比约23%;(2)合肥市公园绿地灌木层物种多样性指数最高为0.624,乔木层物种多样性指数为0.559,草本层物种多样性指数为0.455,其中阳生旱生生境植物群落的各层植物物种多样性指数最高;(3)植物群落单位面积固碳量为78.03g/m^2d,单位面积释氧量为53.09g/m^2d,单位面积降温量为1.75℃/m^2d,单位面积增湿量为11527.68g/m^2d。其中,阳生湿生生境各项生态效益值均为最高,阴生旱生生境的各项生态效益值较低。

Through field investigations on 28 plant community plots in 3 typical parks in Hefei City,the species composition and species diversity of plant communities in different habitat types were analyzed,and reference was made to relevant plant calculation parameters in relevant literature.Quantitative analysis of the ecological benefits of plant communities in different habitat types.The results were as follows.A total of 105 species of plants were recorded,belonging to 88 genera of 48 families,among which the most widely used were Rosaceae,Gramineae and Magnoliaceae,with a total of 24 species of native trees,accounting for about 23%.The highest species diversity index in shrubby layer,tree layer and herbaceous layer in Hefei park was 0.624,0.559 and 0.455 respectively.Plant community carbon sequestration capacity per unit area was 78.03 g/m^2 d,oxygen release per unit area was 53.09 g/m^2 d,cooling capacity per unit area was 1.75℃/m^2 d humidification capacity per unit area was 11527.68 g/m^2 d.Among them,the ecological benefit values of sunny wet habitats were the highest,while those of shade arid habitats were lower.