天水市不同绿地生态效应研究

本试验对天水市主干道及甘肃林业职业技术学院校园内主要绿化树种进行了降温增湿效应观测,并对不同树种滞尘能力进行了研究,表明在高温季节林地和草坪都有降低地面温度,增加空气湿度的作用,尤其是林地效果更为明显。同一尘源条件下,不同树种的滞尘能力与叶片表面粗糙度差异显著;不同尘源备件下,同一树种滞尘量差异显著;与阔叶树种相比,针叶树种滞尘能力较高,尤其是雪松和云杉。

Ecological Effect of Different Landscape Plantations in Tianshui

Ecological effect of landscape plantations along the main streets of the city and the roads within Gansu Forestry Vocational and Technical College were observed in terms of temperature reduc- tion, humidity increment and dust retention. The results showed that forests and lawn were effective in reducing the ground temperature and increasing the humidity. Withr the same dust source, differ- ent tree species performed different dust retention abilities due to the different roughness of leaf sur- face and under different dust sources, the dust retention ability of each tree species performed signifi- cantly different. Compared with broad-leaved species, the conifers have the better dust-detaining ca- pacity, esp. Cedrus deodara and Picea asperata Mast.