不同灌木的降温增湿效应与滞尘能力研究

以海南龙船花、凤尾竹、希茉莉、鹅掌柴、红背桂花、红绒球、福建茶、黄金榕、朱蕉、扶桑10种灌木为研究对象,研究了不同灌木的降温增湿和滞尘能力。结果表明:在相同环境生长的不同灌木,降温增湿效应不同,鹅掌柴和扶桑的降温增湿能力最好,最高平均降温率分别为10.05%和9.05%,最高平均增湿率分别为17.11%和17.30%;降温增湿效应比较差的是凤尾竹和朱蕉,平均降温率分别为5.97%和5.78%,平均增湿率分别为9.27%和9.23%。不同灌木的滞尘能力也有差异,其中滞尘能力较强的灌木是鹅掌柴和红绒球,雨后12 d鹅掌柴的滞尘能力是凤尾竹的3.57倍。

Study on Reducing Temperature,Increasing Humidity Effects and Dust Retention Capacity of Different Shrubs

The capacity of reducing temperature,increasing humidity and dust retention of shrubs were studied in Hainan Tropical Ocean University(Sanya campus),such as Ixora hainanensis,Bambusa multiplex,Hamelia patens,Schefflera octophylla,Excoecaria cochinchinensis,Calliandra haematocephala,Carmona microphylla,Ficus microcarpa cv.Golden Leaves,Cordyline fruticosa and Hibiscus rosa-sinensis.The results showed that the effects of reducing temperature and increasing humidity were different among different shrubs in the same environment.Schefflera octophylla and Hibiscus rosa-sinensis had the best function.Their highest rates of reducing temperature on average were 10.05％ and 9.05％ respectively,and the highest rates of increasing humidity on average were 17.11％ and 17.30％ respectively.Bambusa multiplex and Cordyline fruticosa had the worst function.Their rates of reducing temperature on average were 5.97％ and 5.78％ respectively,and the rates of increasing humidity on average were 9.27％ and 9.23％ respectively.The capacities of dust retention were also different among different shrubs.Schefflera octophylla and Calliandra haematocephala were better in the capacities of dust retention.For Schefflera octophylla,the capacity of dust retention was 3.57 times that of Bambusa multiplex at 12 d after raining.