郑州市带状绿地不同空间结构类型温湿度效应分析

以郑州市中州大道金水路至郑汴路段两侧道路带状绿地为观测对象，探析不同绿地空间结构对温、湿度的调节效应。根据带状绿地宽度、周边建筑环境、植物配置模式、空间类型等指标选取6段样地进行空气温度和相对湿度的观测。结果表明:带状绿地有降温增湿的效果，最大降温幅度2.19℃~3.87℃，最大增湿幅度6.95%~11.25%；4种空间结构类型带状绿地降温增湿方面作用的大小顺序为:乔灌草＞乔木广场＞草坪＞硬化广场；绿地内4种空间类型均能在一定程度上改善人体舒适度，且一天中相对最佳舒适度会在不同绿地空间中出现。结果可作为城市带状绿地生态效益评价的参考，为城市带状绿地的设计、改造和管理提供科学依据。

Effects of Different Spatial Structure of Urban Greenbelts on Air Temperature and Relative Humidity in Zhengzhou

The belt-shaped greenspace on both sides of the Zhongzhou Avenue between Jinshui Rd and Zhengbian Rd were selected to study on the effects of different green space structures on air temperature and relative humidity. Six sample plots were selected according to the indexes of width, peripheral building environment, plant disposition model, spatial structure type of the greenbelts to be observed. The results showed that the greenbelts had cooling and humidification effects, the maximum cooling effect reached 2.19 ℃ to 3.87 ℃, and the most humidifying effect was in the range from 6.95% to 11.25%. The cooling and humidification effects of the four types of belt greenspace were in the order of arbor-shrub-grass＞meadow covered by arbor tree layer＞meadow＞hard pavement square. Human comfort could be improved in all the four types of green space, and the best effect was achieved at different time of the day in four types of greenspace. The results might be referred to ecological benefit evaluation of urban greenbelt, and to the design, modification and management of the urban greenspace.