Area del Medio Ambiente, Facultad de Agronomía, Pontificia Universidad Católica de Valparaíso, Quillota, Chile.
Int J Phytoremediation. 2012 Sep;14(8):820-33. doi: 10.1080/15226514.2011.628716.
The revegetation of soils affected by historic depositions of an industrial complex in Central Chile was studied. The plant re-colonization from the existing soil seed bank and changes in the physico-chemical properties of the soil were evaluated in field plots amended with lime and/or compost. We found that the application of lime and/or compost decreased the Cu2+ ion activity in the soil solution and the exchangeable Cu in the soil, showing an effective Cu immobilization in the topsoil. Whereas lime application had no effect on plant productivity in comparison with the unamended control, the application of compost and lime+compost increased the plant cover and aboveground biomass due to the higher nutrient availability and water-holding capacity of the compost-amended soils. Although the Cu2+ activity and the exchangeable Cu were markedly lower in the amended soils than in the unamended control, the shoot Cu concentrations of Lolium spp. and Eschscholzia californica did not differ between the treatments.
研究了智利中部受历史工业沉积影响的土壤的植被恢复。在田间试验区中添加石灰和/或堆肥，评估了现有土壤种子库的植物再殖民化和土壤理化性质的变化。我们发现，石灰和/或堆肥的应用降低了土壤溶液中的 Cu2+离子活性和土壤中的可交换 Cu，表明在表土中有效固定了 Cu。与未施肥对照相比，石灰的应用对植物生产力没有影响，而堆肥和石灰+堆肥的应用增加了植物覆盖度和地上生物量，这是由于堆肥改良土壤的养分可用性和保水能力更高。尽管添加石灰和/或堆肥后土壤中的 Cu2+活性和可交换 Cu 明显低于未施肥对照，但 Lolium spp. 和 Eschscholzia californica 的地上部 Cu 浓度在处理之间没有差异。
