Which environmental factors can increase tree risk?

The environmental factors that can increase tree risk significantly include soil compaction, root zone disturbances, severe weather conditions, and proximity to buildings or other trees.

Soil compaction reduces the porosity of the soil, which can restrict root growth and impact a tree's ability to take up water and nutrients. This can lead to a weakened root system that is more susceptible to failure. Root zone disturbances, such as excavation or construction activities near trees, can further damage or disrupt the roots, making the tree less stable.

Severe weather conditions, including high winds, heavy snow, or ice storms, can impose significant stress on trees, leading to structural failure or the complete loss of the tree. Additionally, proximity to buildings poses a risk as trees that grow too close can cause property damage if they fail. Likewise, trees that grow close together may compete for resources, which can affect their health and stability.

In contrast, factors such as high nutrient levels, consistent rainfall, or the installation of watering systems generally contribute to the health and vitality of trees. Adequate sunlight and mild temperatures can be beneficial as well, promoting healthy growth rather than increasing risk. Thus, option B is the most relevant to tree risk assessment in the context of increasing environmental stressors