Work on barren soil may bear fruit

September 10, 2015

Scientists have made significant progress in determining what causes soil acidification.

Australian and Chinese scientists have made significant progress in determining what causes soil acidification – a discovery that could assist in turning back the clock on degraded croplands.

James Cook University’s Associate Professor Paul Nelson says the Chinese Academy of Sciences sought out the Australian researchers because of work they had done in Australia and Papua New Guinea on the relationship between soil pH levels and the management practices that cause acidification.

Professor Paul Nelson at work.
Professor Paul Nelson at work.

Building on the JCU work, scientists examined a massive 3600 km transect of land in China, stretching from the country’s sub-arctic north to its central deserts. The work yielded a new advance that describes the mechanisms involved in soils becoming acidified.

Nelson says soil degradation is a critical problem confronting humanity, particularly in parts of the world such as the tropics where land use pressure is increasing and the climate is changing. “We can now quantify the effect of, for instance, shutting down a factory that contributes to the production of acid rain,” he says.

Nelson says the research found different drivers of soil acidification processes in different types of soil across northern China. “This information is vital for designing strategies that prevent or reverse soil acidification and to help land managers tailor their practices to maintain or improve soil quality,” he says.

The Patron of Soil Science Australia, former Australian Ambassador to the United Nations and for the Environment, The Honourable Penny Wensley AC, welcomed news of the advance.

“With 2015 designated by the United Nations as the International Year of Soils, this is a very important year for soil scientists around the world. We need to promote greater awareness of the importance of soils and soil health and the role soil science has to play in addressing national and global challenges.”

In the context of the International Year of Soils, Wensley says: “We want to encourage greater cooperation and exchanges between soil scientists, to accelerate progress in research and achieve outcomes that will deliver practical benefits to farmers and land managers, working in diverse environments.

“This research project, drawing on the shared expertise of soil scientists from Australia’s James Cook University and the Chinese Academy of Sciences, is an exciting illustration of what can be achieved through greater collaboration,” she says.

Acidification is one of the main soil degradation issues worldwide, accelerated by water leaching through the soil. It is related mostly to climate, and the overuse of nitrogen-based fertiliser.

“The greater understanding of soil acidification causes this study has delivered could help improve soil management practices, not only in Australia and China, but around the world,” says Wensley.

The study has been published in the journal, Biogeosciences.

This article was first published by James Cook University on 19 August 2015. Read the original article here.

Related stories

10 thoughts on “Leading sustainable design”

    1. Thanks Jeff! We’re going to publish interviews with the leaders of some of the top 25 companies over the course of the week – keep an eye out!

      1. Love to see @buildingiq on this list!! Csiro spin out in 2009, now global award winning player and backed several times by Ausindustry $; listed ASX in dec 2015

        1. Thanks Michael. BuildingiQ does look like a great service for optimising commercial energy use. A number of great contenders certainly made the judges’ job difficult.

  1. Wow some impressive Coys — Would have thought AJX (ASX listed ) and a new kid on the block EDE who both have proven technologies (AJX USA Defence chosen) (EDE huge concrete potential) may have made your list — Thanks… for reading my post. I have no idea on your selection critera BARRY

    1. Thanks Barry. Both those companies look like they’re working on environmentally friendly solutions. The panel of judges considered the following criteria: total market value, annual turnover, patents awarded and cited, funding and investment, growth year-on-year, social value, overseas expansion and major partnerships.

  2. I’m not sure I read the article properly as I suffer from presbyopia – anyone doing anything about this condition?

  3. I’ve been curious about the different uses of contact lenses. I think it’s so interesting that they are developing smart contact lenses! I love the idea of technology like this. I can’t wait to see how it progresses! Thanks for sharing!

    1. Thanks for the great comment Braden! We can’t wait to see the future of this awesome technology too. Did you see some of the weird and wonderful tech in sciencemeetsbusiness.com.au/big-data-big-business/? Umbrella rain sensors, pigeon pollution monitoring. Keep in touch! SMB

Leave a Reply

Your email address will not be published. Required fields are marked *