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High levels of CO2 led to greening effect: Study

MEHWISH

 

BOSTON:  During last 35 years about half of Earth’s vegetated land has shown remarkable upsurge in greening chiefly due to rising levels of carbon-dioxide in atmosphere according to a new study.

The process of photosynthesis involves absorption of sunlight along with carbon-dioxide (CO2) from air through leaves. It draws water up from the ground to produce sugar which is the main source of fuel for plant to survive on Earth.

Thus the higher concentration of CO2 increased the process of photosynthesis resulting in blooming green plants.

CO2 fertilization is 70% responsible for the amazing growth out of other contributing factors. “The second most important driver is nitrogen, at 9 percent. So we see what an outsized role CO2 plays in this process.” said co-author Ranga Myneni.

Almost 85% of Earth’s ice-free lands are covered by vegetation while it covers 32% of Earth’s total surface area.

 

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M M Alam

M. M. Alam is a Pakistan-based working journalist since 1981. Karachi University faculty gold medalist Alam began his career four decades ago by writing for Dawn, Pakistan’s highest circulating English daily. He has worked for region’s leading publications, global aviation periodicals including Rotors (of USA) and vetted New York Times as permanent employee of daily Express Tribune. Alam regularly covers international aviation and defense-related events including Salon Du Bourget (France), Farnborough (United Kingdom), Dubai (UAE). Alam has reported thousands of events and interviewed hundreds of people in Pakistan, UAE, EU, UK and USA. Being Francophone Alam also coordinates with a number of French publications.