【摘要】 为城市林业树种的选择提供理论依据,本研究对10科17属18种园林植物在含镉污泥基质中的生长情况进行了观测、分析,以期为含镉城市污泥应用于城市林业的树种选择及镉污染区城市园林植物配置提供参考,结果表明:镉对植物的存活与生长均有一定的抑制作用,随着树种(植物)的忍耐力下降,单株生物量与对照相比降低2.1%~68.6%,其中国槐、刺槐、月季、华北景天、皂角的生长表现较好。金丝垂柳和华北景天的转移系数(TR)较高,分别为1.48和3.2。华北景天的富集系数(AR)达到0.36,地上部分对镉的富集能力最强。更多还原

【Abstract】 This study examined 18 species,10 families of urban plants by observing their survival rate and biomass after one-year growth in municipal sewage sludge.The results showed that Cd has a negative impact on all tested species.Their biomass decreased by 2.1%-68.6% compare to that of the control group.Different species have different Cd-tolerance.Sophora japonica,Robina pseudoacacia,Rosa,Rhodiola and Gleditsia sinensis grew better than other tested species.The transfer ratios(TRs) of Salix babylonica and Rhodiola are 1.48 and 3.2 respectively,which are higher than TRs of other tested species.The Cd-accumulating ratio of Rhodiola is 0.36,the highest among all tested materials.更多还原