Soil is the largest carbon sink on earth, and the process of converting atmospheric carbon dioxide into organic matter through photosynthesis and breaking it down by microorganisms in the soil creates stable carbon compounds that remain in the soil for long periods. The effectiveness of soil as a carbon sink can be increased by using biochar, a highly porous material created through the pyrolysis of organic material, which improves soil fertility, water retention, and carbon sequestration. Composting can also lower greenhouse gases and improve carbon sequestration by providing additional vital nutrients for microbes to function effectively in the soil. These nature-based solutions offer an effective way to tackle climate change and reduce carbon concentration in the air.
Promoting root growth can play a critical role in increasing the amount of carbon stored in soil. Deeper and bushy roots have more surface area, which means they can absorb more nutrients and store more carbon. Therefore, by encouraging deeper and bushier root growth, we can potentially increase the amount of carbon stored underground, leading to more effective carbon sequestration. Structural soil and root cells are two landscape solutions that can help with root growth and carbon sequestration.
Structural soil is a specially engineered soil that allows trees to grow in urban areas without causing damage to pavements and infrastructure. Stockholm Structural Soil is a patented mixture that consists of crushed stones and organic matter, such as compost and biochar. This type of soil is specifically designed to provide trees with the necessary nutrients and space for root growth, leading to increased carbon sequestration.
Root cells are modular systems designed to support root growth under pavements. These cells allow for air and water circulation and provide space for deeper root growth, leading to increased carbon sequestration. The cells are filled with soil, and as the roots grow, they help to stabilize the pavement while also absorbing carbon from the atmosphere. These solutions offer a practical and cost-effective way to increase carbon sequestration in urban areas while also providing multiple benefits such as better air quality, stormwater management, and overall urban greening.