NASA | Yellowstone Burn Recovery

The video discusses the impact of a significant fire on Yellowstone National Park, highlighting the long-term ecological effects and the slow recovery process. It explains the use of spectral imaging to assess land composition, focusing on the use of near and shortwave infrared wavelengths. The creation of false color images is described, which aids in interpreting vegetation health. The video concludes with the challenges faced by forests in Yellowstone due to its harsh climate and short growing season, which hinder recovery from severe fires.

What is the color of healthy vegetation in the images discussed in the video?

• Dark green

• Bright yellow

• Pale blue

• Reddish brown

Which wavelength is particularly useful for assessing leaf area due to chlorophyll reflectance?

• Visible light

• Microwave

• Near infrared

• Ultraviolet

In the false color image, which band is assigned to the color red?

• Shortwave infrared

• Ultraviolet

• Green

• Near infrared

What environmental factor contributes to the slow recovery of forests in Yellowstone?

• High humidity

• Short growing season

• Abundant rainfall

• Low altitude

Why is the Yellowstone site considered hostile for forests?

• It is quite dry

• It has a long growing season

• It is located at a low altitude

• It receives heavy rainfall