Pollutants, weather conditions influence the concentration of pollen in the air: study


Scientists have discovered how pollen can lead to major health problems due to air pollution and varying weather conditions. Air pollutants influence the concentration of pollen, and different types of pollen have a unique response to weather conditions. The increased concentration of pollen in the air could lead to allergy and breathing problems.

Researchers have found that pollen stays suspended in the air and is part of the air we breathe. When this air is inhaled, the pollen puts pressure on the upper respiratory system. They cause generalized upper respiratory tract and nasolabial allergy with manifestations such as asthma, seasonal rhinitis and bronchial irritation.

Pollen is a fine yellowish powder that is carried from plant to plant by wind, birds, insects or other animals. The transport of these pollens helps in the fertilization of plants. Sometimes these stay suspended in the air, resulting in allergies in people.

Professor Ravindra Khaiwal of PGIMER, Chandigarh researchers studied the influence of meteorology and air pollutants on airborne pollen in Chandigarh and explored the relationships between temperature, precipitation, relative humidity , wind speed, direction and mainly ambient air pollutants, particles and nitrogen. airborne pollen oxide.

The study published in Science of the Total Environment, however, found that PM10, PM2.5 and NOx showed no clear relationship with pollen concentration.

The researchers concluded that each type of pollen studied had a unique response to weather conditions and air pollutants. The majority of pollen types have been reported in spring and fall. Distinct peaks of airborne pollen were observed under favorable weather conditions, such as moderate temperature, low humidity, and low precipitation.

They also observed that moderate temperature plays an important role in flowering, inflorescence, maturation, pollen release and dispersal. In a statement from the Ministry of Science and Technology, Professor Ravindra Khaiwal pointed out that in terms of the climatic future, the urban environment is expected to have a significant impact on the biological and phenological parameters of plants. .

“The results of the study suggest that the response to pollen needs to be examined at the taxon level, not the assemblage level, with long time series data. This will help calculate future scenarios of changing environmental factors and understand the relationships and trends between meteorology, air pollutants and aerobiology, ”the journal said.

The researchers said the study could help improve understanding of the complex interactions between airborne pollen, air pollutants and climate variables to help formulate appropriate mitigation policies and minimize the burden of pollinosis in the region of the Indo-Gangetic Plain.


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