深圳市绿地植被凋落物存留特征及其影响因素

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。

Characteristics and Impact Factors of Litter Quantity and Development in Green Space of Shenzhen

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 typ...