摘要
文章以北京市海淀区道路绿地作为调查对象,研究其生长季与非生长季的地表覆盖特征及影响要素结果表明:(1)两季中植物配置方式不变,而地表覆盖方式构成发生较大变化,表现为非生长季中复合覆盖模式绿地面积比生长季增加12%。(2)道路绿地整体地表覆盖率有大幅提高,灌草覆盖率下降,裸土灌草率降低。(3)不同区域的灌草及地表覆盖率在非生长季中的变化幅度排序与生长季灌草及地表覆盖率的排序相反,最终表现为在非生长季趋于一致。(4)植物配置中多种阔叶乔灌木配置对非生长季地表覆盖率贡献最大;地表覆盖物中枯枝落叶对非生长季的地表覆盖率贡献最大。总体上,北京市海淀区道路绿地地表裸土的问题还比较突出,要转变传统的绿地养护方式,大力推广地表有机覆盖物的应用,增强道路绿地滞尘、保水和促进植物生长等多种功能。
Taking road green spaces in Haidian District,Beijing,as the research objects,the paper comparatively analyzed the mulching characteristics of growing and non-growing seasons and their influencing factors. The preliminary conclusions were reached from the results：（1） between two seasons,the plant configuration modes remained unchanged while there were large changes in surface mulching characteristics,reflected as 12% increase in the greenbelt area under the composite mulching patterns in non-growing season than the growing one;（2） there was a high increase in the rate of surface coverage on road green space as a whole,leading to the drop in the rate of shrub-grass coverage and the decrease in the soil-shrub-grass coverage;（3） the shrub-grass and surface coverage rate in different areas had opposite amplitude of variation for non-growing season and growing season,and became converged in the non-growing season finally;（4） for plant configurations,a variety of broadleaf arbor-shrub configuration contributed largely to the surface mulching in the nongrowing season,and the litters in the mulching made the largest contribution to the surface mulching in the non-growing season. On the whole,problems of bare soilon the road green space are also prominent in Beijing Haidian Distric,we need to change the patterns of traditional green space maintenance,vigorously promote the application of organic mulch,enhance vatious road green space functions of dust catching,water holding,and promoting plant growth.
出处
《中国城市林业》
2016年第6期7-12,共6页
Journal of Chinese Urban Forestry
基金
林业公益性行业科研专项经费项目"森林对PM2.5等颗粒物的调控功能与技术研究"(项目编号:201304301)
关键词
道路绿地
地表覆盖物
生态养护
季节变化
road green space
surface mulching
ecological maintenance
seasonal variations
