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As climate change continues and farming areas get hotter and drier—as expected in the Southern Great Plains and Southwest—erosion could increasingly take the form of dust storms when bone-dry fields are plowed. It’s a recurring ecological disaster that causes hardship for people who make their living from fishing, shrimping, and tourism.
Industrial agricultural practices such as tillage (plowing) and leaving fields bare between growing seasons degrade soil structure, reduce water infiltration, lower water storage capacity, and increase runoff (the flow of water across the soil’s surface).
But European settlers were remarkably effective at shooting and poisoning prairie dogs and plowing up their burrows. By creating tunnels, theyre also creating a thermal refuge, said Hila Shamon, the director of the Smithsonians Great Plains Science Program and principal investigator of the colony-mapping project.
The plowing of agricultural land during the 19th and 20th century released vast stores of carbon dioxide , only a small part of which has since been returned to the soil. The previous National Academy of Sciences study on links between human and soil health has been deleted, as it is already under way.
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