Abstract: The authors analyze the characteristics of the quantity and development of plant litter in Shenzhen, the correlation of standing stocks of different green-space type with the coverage of arboreal, shrub and herb, the edge disturbance, the frequency of treatment and the distance from the nearest road. Sanitation Department and Green Office are investigated to analyze the litter management and treatments. The results show that the highest quantity and best development of litter is found in the urban green-space type of natural forest, the productive green space and road greenbelt are in the next place; the worst is the roadside trees. Multiple correlation analysis show that the standing stocks of existing litter is highly related with the frequency of treatment and the coverage of shrub. Multiple Linear Regression Models including all influencing factors of different green-space types can explain 40.6%-93.3% of the variation in standing stocks. Green spaces in Shenzhen are arranged by the human-impact level on their litter from the worst to best as: roadside trees; the village green space, unit attached green space, park green space and community green space; the productive forest and road greenbelt; the natural forest.

Key words: litter, green space, standing stock, urbanization, Shenzhen

摘要： 分析了深圳特区不同绿地类型凋落物现存量分布与土壤凋落物层发育特征,及其与样地乔灌草盖度、边缘干扰情况、人为处理频率和与主要道路距离的相关关系,并通过环卫和绿化单位的调查探讨了城市绿地凋落物处理模式。结果显示:深圳市各绿地类型中,森林绿地的凋落物现存量最大并且土壤凋落物层发育最好, 生产性绿地和道路绿化带其次, 行道树绿地最差。多元相关分析表明, 凋落物人为处理频率和绿地灌木层盖度是影响人工绿地植被凋落物现存量的主要因素,不同绿地类型所有影响因子组成的多元线性回归研究表明深圳市各绿地类型凋落物受到人为干扰程度由强模型分别可以解释其现存量变化的 40.6%~93.6% 。至弱排列为: 1)行道树绿地; 2)城中村绿地、单位附属绿地、公园绿地和居住区绿地; 3)生产性绿地和道路绿化带; 4)森林绿地。

关键词: 凋落物, 绿地, 现存量, 城市化, 深圳市