Hawkesbury River Study: CO2 improves tree growth, drought tolerance

Yet another example of how increasing CO2 (aka “plant food”) is actually good for the Earth, the cult of Climastrology notwithstanding.

Watts Up With That?

Hawkesbury River, NSW, Australia - Uploaded by berichard, Author maarjaara - https://commons.wikimedia.org/wiki/File:Hawkesbury_River_1.jpg Hawkesbury River, NSW, Australia – Uploaded by berichard,
Author maarjaara – https://commons.wikimedia.org/wiki/File:Hawkesbury_River_1.jpg

Guest essay by Eric Worrall

According to Belinda Medlyn, a theoretical ­biologist with Western Sydney University, trees exposed to enhanced CO2, in the gigantic open air Hawkesbury River climate study, grow 35% faster than their neighbours in the control group.

“Either they’re getting more carbon for the same amount of water, or they’re getting the same amount of carbon but using less water.”

Since 2012, the researchers have pumped extra CO2into three of six basketball court-sized rings of 80-year-old bush. This has raised the CO2 concentration in the three plots to about 550 parts per million, up from the ambient level of 400 ppm.

Measurements revealed that for each unit of water absorbed, the trees in the CO2-enriched rings reaped 35 per cent more carbon than the trees in the control plots.

Read more: http://www.theaustralian.com.au/news/health-science/trees-reap-benefits-ofnbspclimate-change/story-e6frg8y6-1227572132164

The abstract…

View original post 455 more words

One Response to Hawkesbury River Study: CO2 improves tree growth, drought tolerance

  1. […] Public Secrets has a shocking study on CO2 improving tree growth […]

%d bloggers like this: