Why do trees have more morbidity and less life expectancy in the city?

1) The increased content of harmful substances in the atmosphere and soil,
2) severe dust, worsening photosynthesis;
3) violation of air exchange and water exchange during the construction of roads and the laying of asphalt and trampling;
4) salinity of the soil;
5) mechanical damage to trees;
6) the lack of the required amount of nutrients in the soil due to a violation of the circulation of substances (fallen leaves do not rot, but are collected and carried out).

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