Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy.
Institute of Bioeconomy - National Research Council, via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy.
J Environ Manage. 2020 Nov 1;273:111168. doi: 10.1016/j.jenvman.2020.111168. Epub 2020 Aug 7.
Achieving urban regeneration through the creation of new green areas is a widely promoted strategy to improve the quality of life in densely built neighborhoods. "De-sealing" actions can compensate for the creation of new built-up areas, as demonstrated by the EU-funded Life + project 'Save our Soils for LIFE' (SOS4LIFE, LIFE15ENV/IT/000225), in which guidelines for de-sealing have been published. For the generation of new urban greening, it is important to know the characteristics of the soils used in order to better define the most appropriate landscaping decisions and management practices. In this study the physical and chemical characteristics of topsoils and technosols (soils enclosed under sealed surfaces) were assessed in relation to growth and leaf gas exchanges in two ornamental species (V. tinus and E. x ebbingei), in two partner municipalities of the project, Carpi and San Lazzaro di Savena (north-east Italy), during a three-year trial. Results of the study confirmed the dependence of plant growth on the chemical evolution of the soils, and identified the optimal soil moisture range based on soil texture and soil-plant water relationships. In addition, the technosols were found to actually be beneficial for plant growth, due to their high drainage capacity and nutrient content.
通过创建新的绿色区域实现城市再生是一种广泛推广的策略，旨在提高密集型社区的生活质量。“去密封”行动可以弥补新建成区的建设，欧盟资助的“拯救我们的土壤”（SOS4LIFE，LIFE15ENV/IT/000225）项目证明了这一点，该项目发布了“去密封”指南。为了生成新的城市绿化，了解所使用土壤的特性非常重要，以便更好地定义最合适的景观设计决策和管理实践。在这项研究中，评估了与 Carpi 和 San Lazzaro di Savena（意大利东北部）两个项目合作市的表土和人工土（封闭在密封表面下的土壤）的物理和化学特性，以了解两个观赏物种（V. tinus 和 E. x ebbingei）的生长和叶片气体交换情况。为期三年的试验结果证实了植物生长对土壤化学演化的依赖性，并根据土壤质地和土壤-植物水分关系确定了最佳土壤水分范围。此外，由于人工土具有高排水能力和养分含量，因此发现它们实际上有利于植物生长。
