青岛市园林绿地绿量研究

Studies on Vegetation Quantity of Ornamental Greenbelt in Qingdao

针对城市绿地结构复杂的特点，在层片结构及郁闭度调查的基础上，对青岛市园林绿地的绿量进行了定量研究。结果表明：青岛市常见乔木的叶面积指数多集中在2．02—4．94，灌木植物的叶面积指数集中在1．34—3．06，草本植物集中在3．68～6．43。青岛市园林绿地中存在的大面积纯草坪绿地，以致植物群落不合理，乔木层和灌木层绿量不足。应在保证物种多样性和生态适应性的基础上，尽量选择叶面积指数较高的物种，完善群落层次结构，以提高绿量水平，最大程度地发挥园林绿地的生态效益。借助Google Earth软件获取遥感影像信息，通过斑块和层面的计算得到绿地的绿量。

Aiming at the complex community structure of urban greenbelt, and according to the investigation of synusia structure and its canopy density, this paper studied the vegetation quantity of ornamental greenbelt in Qingdao city. The results showed that the leaf area index （LAI） of ordinary arboreal trees concentrated between 2.02 and 4.94 ; the LAI of shrub plants concentrated between 1. 34 and 3.06 ; the LAI of herbage plants concentrated between 3.68 and 6.43. Large - area layer - structured lawn existed in the garden greenbelt in Qingdao, which led to unreasonable plant community and deficient vegetation quantity of arboreal tree layer and shrub layer. In order to improve the layer structure of the plant community, enbance vegetation quantity, and exerted the ecological benefit of garden greenbelt furthest, the ornamental plant species with higher LAI should be selected. By using software Google Earth to obtain remote sensing image information, it obtained the total vegetation quantity of greenbelt based on calculating the patch and synusia.