What happens to roots after tree removal?

After cutting the tree down, the root systems continue to decay for several years. The rate of decline varies significantly according to soil conditions and climatic factors. Roots decay more rapidly in aerated, moist conditions than in urban soils. This natural disintegration returns nutritious minerals into the ecosystem and leaves temporary voids in the subsoil.

Decomposition begins with fungal colonization, which breaks down lignin. The fungal invasion starts in the root tissues by white-rot fungi, whereupon bacteria invade and consume the cellulose. This results in the release of nitrogen, potassium, and phosphorus into the surrounding soil. The torrential discharge of plant nutrients assists the surrounding plants. The rate of decomposition is highest during the warm, moist months.

As the roots decay, settlement occurs. Spaces are vacated and collapse under the weight of the surface soil, forming small pits. Large stump root systems augment the danger of this occurrence in shrinkable clay soils. Usually occurs in 2-4 years after removal. Structural foundations are rarely damaged, although they may damage lawns.

Dealing with decomposition prevents future problems. Stumps should be ground to aid in decomposition. Fill any voids with gravel-sand mixes before a duration of settling. Avoid planting in areas that have been recently affected in the past one to two years. After reclaiming areas, look for areas of unforeseen sinking during projected rainy seasons.

Mycorrhizal networks have been found to persist in place following disturbance. The fungal associates continue to exchange nutrients with neighboring trees in the aftermath of the removal. Mycorrhizal fungi also aid in decomposing dead roots while supporting the growth of live root systems. This subterranean web ensures soil health, even during the decomposition process.

Read the full article: 7 Essential Facts About Tree Root Systems