Measuring the forest using satellite images
| Satellite images can provide information about forests located in distant or mountainous places that are difficult for a person to visit and measure directly. The image above is a map of forest age in Yellowstone National Park created using a satellite image. Purple areas were burned in the 1988 forest fires, and the seedlings growing in these areas are still very young. Older forests that are 100-200 years old are shown in blue and green, while the very oldest forests (300-400 years old) are mapped as red and orange. |
Credit: Kansas Applied Remote Sensing Program
For more info: http://www.kars.ukans.edu/forest