Subscribe
First Look

The global human footprint may be growing more slowly than we thought

New satellite data suggests that humanity's impact on the environment is increasing more slowly than population or economic growth.

  • close
    Workers clean Nim Shue Wan beach at Hong Kong's Lantau Island on July 8. The human impact on the environment continues to grow, but the expansion of the human footprint is not keeping pace with population growth, according to a study published Wednesday.
    Bobby Yip/Reuters/File
    View Caption
  • About video ads
    View Caption
of

The environmental impact of human activity can be seen throughout the globe, and according to new research, those pressures continue to swell. But there may be some good news.

A new study, published Tuesday in the journal Nature Communications, found that about 75 percent of the planet’s landmass was under pressure from human activity. But even though our environmental footprint is definitely increasing, researchers say it’s increasing more slowly than other global factors.

“Seeing that our impacts have expanded at a rate that is slower than the rate of economic and population growth is encouraging,” said lead author Oscar Venter of the University of Northern British Columbia, in a statement. “It means we are becoming more efficient in how we use natural resources.”

Recommended: 5 environmental wins to celebrate

Improvements in satellite technology – the same utilized by Stanford researchers to map global poverty – allowed Dr. Venter and colleagues to observe environmental changes on increasingly fine scales. By considering factors such as population density, land development, transportation infrastructure, and light pollution, they were able to measure net increases in human impact between 1993 to 2009.

Our maps show that three quarters of the planet is now significantly altered and 97 percent of the most species-rich places on Earth have been seriously altered,” said co-author James Watson from the University of Queensland and Wildlife Conservation Society, in the statement. “There is little wonder there is a biodiversity crisis.”

But an additional finding surprised researchers. The human population had increased by more than 23 percent since 1993, and the global economy swelled by more than 150 percent. But the human footprint, somehow, only increased by 9 percent.

It’s not yet clear what led to the unexpectedly low growth of the global human footprint. Researchers note that some wealthier nations actually decreased their domestic footprints. But that could be attributed to the shift of food and material production to other countries.

With so many different factors to consider, global conservation represents a near-insurmountable challenge. But with new human impact maps, conservationists can consolidate their efforts on high-biodiversity regions before they decline.

“We are in an age of extinction, but the difference between a truly mass extinction and just broad-scale extinction could hinge on this linkage between how fast the human footprint grows and if it is less than population growth or more than population growth,” Samuel Cushman, a research ecologist with the US Forest Service, told National Geographic.

About these ads
Sponsored Content by LockerDome
 
 
Make a Difference
Inspired? Here are some ways to make a difference on this issue.
FREE Newsletters
Get the Monitor stories you care about delivered to your inbox.
 

We want to hear, did we miss an angle we should have covered? Should we come back to this topic? Or just give us a rating for this story. We want to hear from you.

Loading...

Loading...

Loading...

Save for later

Save
Cancel

Saved ( of items)

This item has been saved to read later from any device.
Access saved items through your user name at the top of the page.

View Saved Items

OK

Failed to save

You reached the limit of 20 saved items.
Please visit following link to manage you saved items.

View Saved Items

OK

Failed to save

You have already saved this item.

View Saved Items

OK