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12 July, 2018 00:00 00 AM

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Increase tree plantation

Forests have a major impact on local weather systems and can also affect the amount of sunlight absorbed by the planet
Increase tree plantation

At a recent post-rally discussion in Rangpur, government officials and experts have stressed on massive tree plantation to adapt to climate change side by side with improving environment, ecology and bio-diversity. Trees would be planted alongside roads and canals, while mangrove forests would also be increased.

The importance of tree plantation cannot be overemphasised. However more crucial step should be the indiscriminate felling of existing trees. Unfortunately, in comparison to preventing the loss of natural forests, however, tree planting has the potential to make only a limited contribution to reducing CO2 levels in the atmosphere

Climate change could jeopardize production of crops such as corn, wheat, rice and soy even as a rising global population will raise demand. Trees soak up heat-trapping carbon dioxide as they grow and release it when they burn or rot. That makes forests, from the Amazon to Siberia, vast natural stores of greenhouse gases.

The planting of new forests can help militate against climate change by removing CO2 from the atmosphere. Younger trees absorb carbon dioxide quickly while they are growing, but as a tree ages a steady state is eventually reached, and at this point the amount of carbon absorbed through photosynthesis is similar to that lost through respiration and decay. If trees are harvested carefully near this time in the growth cycle, and new trees are planted or allowed to regenerate, then this can keep the forest as a net “sink” of carbon. Therefore careful woodland management can mean that woodlands are able to take up the maximum amount of carbon possible.

 Combined with the sun's energy, the captured carbon is converted into trunks, branches, roots and leaves via the process of photosynthesis. It is stored in this "biomass" until being returned back into the atmosphere, whether through natural processes or human interference, thus completing the carbon cycle. If trees are planted where previously there weren't any, they will soak up CO2 as they grow, reducing the amount of greenhouse gas in the atmosphere. It is thought that trees, plants and other land-based "carbon sinks" currently soak up more than a quarter of all the CO2 that humans add to the air each year – though that figure could change as the planet warms.

Unsurprisingly, the relationship between trees and local and global temperature is more complicated than the simple question of the greenhouse gases they absorb and emit. Forests have a major impact on local weather systems and can also affect the amount of sunlight absorbed by the planet.

 

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Editor : M. Shamsur Rahman

Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

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