Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
Versatile Geospatial Program Director Shelly Carroll Joins Woolpert
Carroll’s topo-bathy lidar and hydrographic data experience with coastal...
Mahr Introduces New MarSurf M 310 Mobile Surface Measurement System
PROVIDENCE, RI  – Mahr Inc., a global manufacturer of...
FARO® Launches Trek, the Automated 3D Laser Scanning Integration with Boston Dynamics Spot® Mobile Robot
Lake Mary, FL, August 5, 2020 – FARO Technologies, Inc....
New Space Satellite Pinpoints Industrial Methane Emissions
GHGSat is a New Space initiative that draws on...
Teledyne Optech extends its innovative airborne lidar sensor series with new corridor mapping model
The new Galaxy CM2000’s small laser footprint allows for...

On Sept. 18, 2010, shortly after the planned firestorm occurred, an ALI image revealed a black, charred landscape.

On Aug. 20, 2011, ALI acquired a new image of the park showing no sign that a fire ever occurred.

The fire killed the top of trees taller than three meters (10 feet) but the grass came back entirely.

In September 2010, the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite charted the progress of a prescribed fire in Kruger National Park, South Africa. Navashni Govender, program manager for fire ecology and biogeochemistry in the park, said the fire was an experiment intended to kill off woody shrubs and trees that have been encroaching on grassland where the park’s famous wildlife graze. Usually planned fires are low-intensity burns that are easy to control, but this type of cool fire couldn’t kill the woody vegetation. So park managers set a hot, intense firestorm.

Did the experiment work? On Sept. 18, 2010, shortly after the planned firestorm occurred, ALI revealed a black, charred landscape, as shown in the top image at left. Nearly one year later, on Aug. 20, 2011, ALI acquired a new image of the park. This image, shown in the center, shows no sign that a fire ever occurred. Previously charred land is now indistinguishable from the tan land around it. Adapted to fire, the savanna grasses recovered quickly.

The view from the ground is even more revealing. The fire killed the top of trees taller than three meters (10 feet), according to Govender, but the grass came back entirely. Like the grass, the trees began to regrow, but for now they are small and tender enough for animals to eat. The bottom photo, taken by Govender, shows impalas grazing on the new grass and young trees beneath fire-blackened trees. To completely remove the woody vegetation and restore open grassland, managers will set a second high-intensity fire after the grass and shrubs regrow enough to sustain the fire.

The restoration project will help Kruger National Park maintain a patchwork of forest, thick woody brush and open grassland. The mixed landscape supports greater biodiversity, providing habitat for the wide array of African wildlife found in the park.

NASA image by Jesse Allen and Rob Simmon, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Photo courtesy Navashni Govender, SANParks. Caption by Holli Riebeek with information from Navashni Govender.

Read More

Comments are closed.