园林绿地中纯林、混交林的生态效益研究  

Ecological benefit of pure and mixed forests in the urban greenland

作　　者：刘娇妹[1] 李树华[1] 

机构地区：[1]中国农业大学观赏园艺与园林系

出　　处：《北京林业大学学报》2006年第S2期182-182,共1页Journal of Beijing Forestry University

摘　　要：该试验选择元大都城垣遗址公园西段4块不同结构类型的绿地为研究对象,即草坪、刺槐纯林、油松纯林、刺槐-油松混交林,进行了连续9d的测试.通过测定分析,得出不同植物群落结构类型的园林绿地在水平方向和垂直方向上温度、湿度的分布规律及差异.结果表明,在水平方向上,在3种天气条件下,油松纯林的日平均温度最低,相对湿度最高;在晴朗天气一天中的高温时段,草坪的温度最高,相对湿度最低;在晴朗天气高温时段2:00时,在水平方向上,刺槐-油松混交林的相对湿度比草坪高13·4%,温度比草坪低1·6℃.经SPSS方差分析,刺槐-油松混交林的降温增湿效果均达到显著水平(α=0·05).刺槐-油松混交林的降温增湿效果最好,草坪的降温增湿效果最差.在垂直方向上,混交林的温、湿度变化较为复杂.The ecological benefit on urban lands in Beijing was studied in this paper.Four kinds of greenland were studied in the experiment, which were lawn, Robinia pseudoacacia, Pinus tabulaeformis and R. pseudoacacia-P. tabulaeformis mixed forests. The experiment was carried out on Yuanda-du Park. The results show that the ecological benefit of mixed plantations is best. The temperature of the mixed plantations is notably lower than that of the pure forest and lawn. The humidity of the mixed plantations is the highest. The mixed forests reached significant level(α =0.05), which was analyzed by SPSS. Relative humidity of mixed forests was 13.4% higher than that of lawn on the level direction at high temperature, while temperature of it was 1.6℃ lower than that of lawn. It didn't reach significant level between R. pseudoacacia and P. tabulaeformis plantation. Therefore, we should plant some more mixed plantations in planting work.

关 键 词：园林绿地 植物群落 生态效益 温度 湿度 

分 类 号：S718.5[农业科学—林学]