【摘要】 【目的】评价南宁市常见行道树大王椰子和扁桃对环境因子的影响。【方法】以南宁市民族大道上栽植的大王椰子和扁桃为研究对象,采用生理生态学方法,在2008年1、5、7、10月4个不同季节测定裸地地表和树下的空气温度、湿度及大气辐射日变化。【结果】相对于裸地地表,大王椰子和扁桃在一年的4个测试季节中,其树下的空气温度和大气辐射均有明显降低,但树下空气湿度没有明显差别;两树种树下空气温度和大气辐射的日变化曲线呈"单峰"型,而空气湿度的日变化曲线呈"U"型。【结论】大王椰子和扁桃对环境有改善作用,但作用效果不完全一致,扁桃对温度和大气辐射的降低效果非常明显,遮荫效果较好,而棕榈科的大王椰子相对较差。更多还原

【Abstract】 [Objective]The present study was conducted to investigate the effects of common roadside trees Roystonea regia and Amygdalus communis on the environments in Minzu Road of Nanning. [Method]Diurnal variations of air temperature, air humidity and atmospheric radiation of bare land surface and under Roystonea regia and Amygdalus communis trees were studied in January, May, July and October, 2008, with the methods of physiological ecology. [Result]Compared to control measurements taken on surface of bare lands, air temperature and atmospheric radiation under Roystonea regia and Amygdalus communis were found remarkably lower during the four investigation months, however air humidity under the trees did not differed remarkably. Diurnal variation curves of air temperature and atmospheric radiation under the two trees showed single peak at the end of the day, while that of air humidity showed "U" style. [Conclusion]Amygdalus communis showed significant positive effects on temperature and atmospheric radiation, and better shade effect. In comparison, Roystonea regia was a little worse.更多还原