武汉市公园绿地植物的冠层雨水截留能力研究

Canopy Rainfall Interception of Landscape Plant in Wuhan Park Greenbelts

公园绿地作为城市建设的重要组成部分,在协调雨洪管理方面具有重要作用。研究植物冠层雨水截留能力的对提高公园绿地雨洪功能具有重要意义。本研究对武汉市公园绿地中常见的80种植物进行了冠层雨水截留能力的测定与分析。结果表明:同一种生活型的植物冠层雨水截留能力各有不同,具有强雨水截留能力的乔木有圆柏、枇杷、雪松、落羽杉,灌木有绣球荚蒾、匍枝亮叶忍冬、杜鹃、木芙蓉,草本植物有麦冬、薏苡、香蒲、金门莎草。不同生活型植物冠层截留能力均值也存在较大的差异,针叶乔木的冠层雨水截留能力均值最高,而落叶阔叶乔木冠层雨水截留能力均值最低。该研究可为进一步筛选雨水截留能力高、适应武汉本土环境气候环境的公园绿地植物提供科学依据。

As an important part of urban construction,park greenbelts play an important role in coordinating the management of rainfall and flood.In this study,the canopy rainfall interception of 80 common plants were measured and analyzed.The results showed that the canopy rainfall interception of the same life form plants is different.Canopy interception of some arbors,shrubs and herbs were higher than other plants,such as Sabina chinensis,Eriobotrya japonica,Cedrus deodara,Taxodium distichum,Viburnum macrocephalum,Lonicera ligustrina,Rhododendron simsii,Hibiscus mutabilis,Ophiopogon japonicas,Coix lacryma-jobi,Typha orientalis,Cyperus rotundus.The mean of canopy rainfall interception of different life form plants also showed great differences.Coniferous trees had the highest mean of canopy rainfall interception,while deciduous broadleaf trees had the lowest one.The information may be useful in further screening of green plants in Wuhan Park which have higher canopy rainfall interception and adapt to the local climate environment.