Our poor soils even more need this treatment

THE DIRT


In cities, healthy soils could be a powerful tool for managing stormwater, but unfortunately the status-quo is compacted, degraded soil covered in asphalt, said Zolna Russell, ASLA, Floura Teer Landscape Architects, and Stu Schwartz, Center for Environmental Research and Education, at the 2012 Greenbuild conference in San Francisco. Outlining novel techniques — “subsoiling,” which involves the use of agricultural de-compaction machinery, along with adding “soil amendments,” otherwise known as compost — Russell and Schwartz made the case for rebuilding the ecosystem function of soils in urban areas and creating new opportunities to manage stormwater through the ground itself. They also noted that the Sustainable Sites Initiative™ (SITES®) would provide credit for approaches like these that boost soil health.

According to Russell, the ecosystem services of soils play a large part in determing the quality of our landscapes. Healthy soils provide water absorption, groundwater recharge, food for plants, habitat for decomposers, and sequester carbon. Without…

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