4种城市绿地类型缓解热岛效应比较  

Four Types of Green Space in Urban on the Reduction of Heat Island Effect

作　　者：何介南[1] 肖毅峰[1] 吴耀兴[1,2] 吴立潮[1] 康文星[1] 

机构地区：[1]中南林业科技大学,长沙410004 [2]湖南科技学院,湖南永州425100

出　　处：《中国农学通报》2011年第16期70-74,共5页Chinese Agricultural Science Bulletin

基　　金：湖南省自然科学基金项目"城市森林减缓城市热岛效应的机理研究"(09JJ3031)

摘　　要：为了研究城市不同绿地类型缓解热岛效应的效果大小,在长沙市城区选取4种典型绿地类型的样地及其相邻裸地,进行实地观测获取温度和湿度数据,通过分析,结果表明:降温效应和增湿效应都是乔木林>乔灌林>灌丛>草地;乔木林、乔灌林、灌丛和草地的温度变化指数分别是7.32、6.59、5.33和4.10,湿度变化指数依次为16.87、13.23、9.42和7.61。结论表明:不同类型的绿地因其内部结构和垂直结构不同,降低城市热岛效应的强度不一样,长沙市4种典型绿地类型减缓城市热岛效应强度的大小排序是乔木林>乔灌林>灌丛>草地;为减缓城市热岛效应的影响,在城市绿地建设中,长沙市应加大乔木林、乔灌林建设的面积,减少灌丛和草地建设面积。This paper studied four types of green space in urban on the reduction of heat island effect.The authors selected four typical types of green space and their adjacent bare plot in changsha city to carry out field observations of temperature,humidity and obtained data.By statistical analysis,the results showed that：different types of green space had different effects to reduce the urban heat island;cooling effect and humidifying effect were showed that：the arbor forests ＇ was higher than arbor-shrubberys ＇ than thicket ＇ s than grasslands ＇.Temperature changing index of arbor forest,arbor-shrubbery,thicket,and grassland were 7.32,6.59,5.33 and 4.10.Humidity changing index were 16.87,13.23,9.42,7.61 in order.The conclusion showed that：different types of green space,because their internal structure and the vertical structure were different,it was different to reduce the urban heat island intensity,the capability reducing heat island effect on four types of green space in changsha was the arbor forestsarbor-shrubberythicketgrassland;Changsha should increase construction area of the arbor forests and arbor-shrubbery,to reduce construction area of thicket and grassland for reduction of the urban heat island effect in building green space.

关 键 词：热岛效应 城市绿地 长沙市 

分 类 号：S732[农业科学—林学] S688.4