Las Trees in the cities They have a great influence on public health by not only a “detail” but also cold. A new study estimates that the increase in plants in urban areas is 30% May have excluded more than one -third of all deaths related to heat In the world between 2000 and 2019. Overall, 1.16 million lives may have been saved with more plants during this period in 20 years.
However the benefits of health Green places They are well -known, the Model inspection Among the researchers of Melbourne Monash University, the greenhouse of the greenery and its altercation effect calculated Thermal-mortality rate.
“This provides us with a complete assessment of its benefits to alleviate heat -related death,” says Professor Yuming Kuo, director of the study. “These results refer to it Strategies to protect and expand greenery It is possible to reduce the temperature and alleviate the effects of heat exposure. “
How to save urban trees?
He is an important threat to public health Climatic change Causes by man. Between 2000 and 2019, high temperatures are associated with half a million deaths per year, which indicates 0.91% of all world deaths.
According to Professor Guo. “In the most intense global warming scenes,” ratings Heat related deaths They are in northeast Asia in the 2090s and 16.7% of the deaths in Northern Europe. Stop the emitting emission of the earth Its appearance is the best way to reduce heat -related deaths. But how Increased plants Help people protect people?
The grass in the dense urban areas has a high level of refreshing effect of trees and other plants. Plant shades surfaces, Distract the solar radiation and increase evaporation stimulation (Evaporation of soil and plants), which supports the heat of the air. It Cold the ambient temperature And reduces the number of persons exposed to extreme heat.
Professor Quo says Can change the risks of green death The progress of heat -related, mental health, an increase in social stability and He GymnasticsAnd reduce Atmospheric pollution.
How many lives could have been saved in Europe?
According to the study, the The plant’s size increased 10%, 20% and 30% are reduced by 0.08ºC, 0.14ºC and 0.19ºC respectively the average temperature of the daily. In turn, this is I could have excluded 0,86, 1,02 Y 1.16 million deathsIt is 27.2%, 32.2% and 36,7% In all things Heat related deaths Between 2000 and 2019.
According to the model, the positive effect of more plants depends on the type of climate of a particular city and a series of factors such as socio -economic and population composition. If the plant level increases by 30%The The average of the saved life From between 2000 and 2019 396,955 in Europe. Asia is the continent that saves more lives with 527,989. In particular, the urban areas of South Asia, Eastern Europe and East Asia have experienced a greater reduction in heat -related deaths.
Researchers explain it Contacts between heat and death Evaluated using data from 830 seats from 53 countries Extended to each urban center. When Green Nasa.
