WASHINGTON, Feb. 18 (Xinhua) — A observe has shown that greater than half of the carbon reservoir inside the international’s forests is in the ones where trees are enormously younger or beneath 140 years old in place of in tropical rainforests.
Those timbers have a tendency to regrow on land previously used for agriculture and it’s far their younger age this is one of the fundamental drivers of the carbon uptake, consistent with the study posted on Monday inside the magazine Proceedings of the National Academy of Sciences.
It got here after a NASA satellite facts-based totally have a look at remaining week showing that China’s formidable tree-planting programs and in-depth agriculture contributed at least 25 percent of the foliage growth because of the new century.
Forests are extensively diagnosed as an ecosystem capable of capturing and storing huge amounts of carbon dioxide, however, the dense tropical forests had been assumed to play a principal position in absorbing the greenhouse gases.
Researchers on the University of Birmingham analyzed the worldwide biosphere the usage of a brand new mixture of records and computer modeling and discovered that the new forests sucked up big quantities of carbon now not best because of fertilization consequences however also due to their younger age.
The age effect accounted for around one-fourth of the overall carbon dioxide absorbed via forests, in line with the look at.
Also, the age-caused carbon uptake turned into in the main located no longer in the tropics, however in the middle and excessive range forests. Therefore, the large-scale reforestation applications in China are making the main contribution to this carbon sink.
“It’s critical to get a clear sense of in which and why this carbon uptake is occurring because this facilitates us to make centered and knowledgeable choices about woodland management,” said Tom Pugh with the Birmingham Institute of Forest Research.