Tropical regions are all "natural oxygen bars"?

 

As early as 2019, a British research team published a study on climate science in the journal Nature Communications, saying that the tropics have become an unexpected source of carbon dioxide, a greenhouse gas
.
There are also statistics that in 2018, the number of premature deaths due to air pollution such as fine particulate matter in cities near the equator was as high as 470,000
.

 

Recently, researchers from University College London collected satellite data from 2005 to 2018 to study the fine particle pollution in 46 tropical cities including Mumbai, the capital of India, Dhaka, the capital of Bangladesh, and Lagos, Nigeria.
Thirty-three tropical cities saw a 1.
5- to 4-fold increase in fine particle pollution, and the number of premature deaths from exposure to air pollution increased by 62% during this period
.

 

The level of environmental quality in tropical regions will be directly related to the sustainable development of the region's economy, society and environment, as well as the health of local residents
.
Therefore, it is particularly important to understand the factors that cause environmental pollution in tropical areas and how to prevent and control the pollution
.

 

As far as agricultural development in tropical regions is concerned, the use of chemical fertilizers for crops and the use of pesticides on the other hand cause pollution to the environment
.
Appropriate fertilization of crops is not harmful, but the conditions in the tropics and temperate regions are very different, and it is not feasible to directly apply the knowledge of plant nutrient transformation in temperate regions to tropical regions
.
Because the efficiency of fertilizers in the tropics is very low, it is estimated that the efficiency of nitrogen fertilizers is less than 50%, the efficiency of phosphate fertilizers is less than 10%, and the efficiency of potassium fertilizers is only about 40%.
Unused fertilizers can easily cause environmental damage.
pollution
.
Second, there are many crop pests in tropical regions and they are widely distributed, and the extensive use of pesticides will also cause serious environmental pollution
.

 

In terms of industrial development in the tropics, since most countries in the tropics are developing countries, in the process of vigorously developing industrial areas, it is often easy to underestimate the damage to the environment
.
In addition, many tropical plants have high economic value, such as rubber, coconut, cassava, etc.
In the process of processing these raw materials, if there is no strict control, it will inevitably cause serious environmental pollution
.

 

　　These pollutants are highly mobile and can be said to affect the whole body.
If these pollutants are not properly treated, they will continue to circulate with all aspects of the ecosystem
.
As the villagers of the "global village", we cannot get rid of the problem of environmental pollution.
Therefore, more attention must be paid to the prevention and control of pollutants!
 

　　Original title: Are all tropical regions "natural oxygen bars"? What are the neglected environmental pollution problems?