Markham, a bustling city located in the Greater Toronto Area, is known for its picturesque landscapes and abundant green spaces. As the city continues to develop and urbanize, it is necessary to take measures to protect the existing trees that contribute to the city’s natural beauty and ecological diversity. One such measure is the establishment of Tree Protection Zones.
Tree Protection Zones (TPZs) are areas surrounding trees that are protected from construction work or other disturbances that could harm the tree. The purpose of establishing TPZs is to safeguard the health and longevity of trees by preserving the soil, roots, and other vital elements that contribute to their growth and survival. In Markham, TPZs are regulated by the city’s Tree Preservation By-law, which sets guidelines for their size and location, among other things.
What are Tree Protection Zones?
TPZs are areas designated around trees that need to be protected from any construction or excavation work that could harm the tree’s root system. They are usually circular or elliptical in shape and are determined by the diameter of the tree’s trunk at breast height (DBH). The size of the TPZ depends on the DBH of the tree and the type of construction work that is being done. For example, a TPZ for a tree with a DBH of less than 30 cm would generally be 1-2 meters in radius, while a TPZ for a tree with a DBH greater than 100 cm could extend up to 10 meters from the tree.
What are the benefits of TPZs?
TPZs are essential for the well-being and survival of trees in urban environments. Some of the benefits of these zones include:
1. Preservation of soil health: Tree roots need healthy soil to grow and thrive, and construction work can compact or damage the soil around the tree. TPZs protect the soil around the tree from being disturbed, helping to preserve the soil’s nutrients and moisture content.
2. Protection of root systems: Roots are responsible for anchoring the tree, absorbing water and nutrients, and providing structural support. Damage to the root system can weaken the tree, making it vulnerable to disease and pests. TPZs protect the roots from being cut, crushed, or otherwise disturbed by construction work.
3. Improved air quality: Trees absorb carbon dioxide and other pollutants from the air, improving air quality in urban areas. TPZs help to maintain the health and vitality of existing trees, ensuring that they continue to contribute to the city’s air quality.
4. Aesthetic benefits: Trees are a significant part of Markham’s natural beauty and provide visual appeal for residents and visitors. TPZs help to preserve trees’ visual impact, allowing them to continue to be an essential part of the city’s landscape.
How are TPZs regulated in Markham?
In Markham, TPZs are regulated by the city’s Tree Preservation By-law. The by-law sets forth guidelines for the protection of trees on both public and private property. The by-law requires that all development applications include a tree preservation plan that outlines how existing trees will be protected during construction. The plan must identify trees that need to be protected and the size and location of the TPZs around them.
The by-law also requires that a qualified arborist assess the trees’ health and condition and provide recommendations for their protection. The arborist’s report should specify the size and location of the TPZs required for each tree, based on its DBH and the type of construction work being done.
What are the consequences of violating TPZs?
Violations of TPZs can result in hefty fines or legal action. Under Markham’s Tree Preservation By-law, anyone who damages or destroys trees or their TPZs can be fined up to $100,000 for each offense. In addition, the city may require the offender to replant trees or otherwise compensate for the damage done.
Conclusion
Tree Protection Zones are crucial for preserving Markham’s valuable green spaces and ensuring that the city remains a healthy and vibrant place to live. By observing the guidelines set forth by the city’s Tree Preservation By-law, developers and residents can help to protect trees and preserve the city’s natural beauty for generations to come.