Scientists monitor peatlands from space

EXETER, England, Jan. 27 (UPI) -- British scientists say they have developed a technique that allows monitoring of Earth's peatlands via satellite images and airborne laser scanning data.

The researchers, led by Karen Anderson of the University of Exeter, said their new technique involves measuring spatial patterning in peatland surfaces as an indicator of their condition.

The researchers said airborne laser scanning instruments are capable of measuring fine-scale structures such as hummocks and hollows that typically measure less than 13 feet in size.

"This work is the first to demonstrate that peatland structures, which are linked to hydrological status and condition, can be measured using remote sensing techniques," said Anderson. "Our approach enabled us to draw out the differences in surface pattern across the peatland and resulted in an improved mapping product which is useful for scientists, peatland managers, statutory conservation agencies and for policy makers."

The researchers said their method could help better monitor damage to peatlands caused by human activity. That damage, scientists said, contributes to global warming since peatlands might release the carbon they have absorbed and stored.

Peatlands, sometimes referred to as peat bogs, are wetland areas filled with with decaying plant matter. Peat is often used for gardening and also as fuel in certain parts of the world.

The research that included scientists from the Universities of Southampton and East London is reported in the Journal of Environmental Quality.