Tree demography involves quantifying the mortality, growth, and recruitment of trees in a particular area, providing clear insights into the current and future vulnerabilities of tree populations and aiding in effective management. In a broader context, forest demography encompasses recruitment, mortality, and growth. When applying these principles to urban settings, the term "removal rate" is more suitable for mortality due to the human intervention involved in removing urban trees. Despite this, the same principles of forest demography apply to urban settings, though the processes differ. Recruitment in urban areas can occur through regeneration or planting at new sites or as replacements at old sites. Long term monitoring, and surveying urban trees provide valuable information for urban city planners, and policy makers. In such surveys, it is crucial to focus on different plant species and their specific responses to the surrounding environment to evaluate species-specific reactions. Additionally, gaining a better understanding of tree mortality or survival over a particular time period, growth rates, species composition, harmful factors for trees, and decaying or dying trees in an urban area can provide valuable insights into the quality of greenery components.
References
Forest Service, U. S. Department of Agriculture - https://research.fs.usda.gov/psw/projects/monitoring
Salguero‐Gómez, R., Jones, O. R., Archer, C. R., Buckley, Y. M., Che‐Castaldo, J., Caswell, H., ... & Vaupel, J. W. 2018. The compared Plant Matrix Database: an open online repository for plant demography. Journal of Ecology, 103 (1): 202-218.
van Doorn, Natalie S.; McPherson, E. Gregory. 2018. Demographic trends in Claremont California s street tree population. Urban Forestry & Urban Greening. 29: 200-211. https://doi.org/10.1016/j.ufug.2017.11.018.
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