林业科学2012，Vol.48Issue(3)：58-65,8.
河流廊道绿带结构的温湿效应
Effects of the Different Structures of Green Belts on the Temperature and Humidity in River Corridors
摘要
Abstract
In order to understand scientific basis for constructing green belts in river corridors, the effects of the different structures (internal constitution, canopy closure density) of green belts on the temperature and humidity were analyzed by the small-scale quantitative measurement. In this paper, four-green belts with different internal constitutions including tree-shrub-herbage mixture, tree-herbage mixture, shrub-herbage mixture and lawn and five-green belts with different canopy closure densities including 0 - 0.20, 0. 20 - 0.40, 0.40 - 0.60, 0. 60 - 0. 80 and 0. 80 - 1.00 along the Qinghe river in Beijing were investigated in July of 2010 . The air temperature and relative humidity in the green belts were measured in two hour interval from 8: 00 to 18: 00 for continuous seven days. The results showed: 1 ) the effects of different belts on the temperature and humidity were ranked in an order of tree-shrub-herbage > tree-herbage > shrub-herbage > lawn. The green belt with internal constitution of lawn had no significant effect on temperature and humidity. The shrub-herbage green belt had a moderate effect on temperature reduction and humidity increase, and an obvious and stable effect was found with the green belts of tree-herbage and tree-shrub-herbage. Based on Duncans Post Hoc Tests (P = 0.05) , it was concluded that the tree-herbage and tree-shrub herbage of urban green belts had obvious effects on the temperature decrease and humidity increase (width of green belt must be about 45 m). 2) The temperature and relative humidity benefits increased with the canopy density of the green belt. The green belt with canopy density of 0.20 -0.40 had a slight effect on the temperature decrease and humidity increase; The density of over0. 40 had an obvious effect, and an extremely obvious and stable effect was found with canopy density of over 0. 60.关键词
河流廊道/绿带/内部构成/郁闭度/温湿效应Key words
river corridor/ green belt/ internal constitution/ canopy density/ temperature-humidity benefit.分类
农业科技引用本文复制引用
纪鹏,朱春阳,李树华..河流廊道绿带结构的温湿效应[J].林业科学,2012,48(3):58-65,8.基金项目
国家自然科学基金项目(30972416) （30972416）
黑龙江省青年科学基金项目(QC2010042). （QC2010042）
