Land Cover Change: An Overview (Chapter 6)

What does LGM stand for?

• Last Glacial Maximum

• Longest Glacial Maximum

• Last Global Movement

• Longest Glacial Movement

Answer explanation

Last Glacial Maximum was the last time glacial ice cover was at its maximum

When was the Last Glacial Maximum?

• Approximately 10,000 years ago

• Approximately 8000 years ago

• Approximately 20,000 years ago

• Approximately 14,000 years ago

Answer explanation

20,000 years ago on average but it could be 18,000 -21,000 depending on the location on earth

During the LGM what land cover did not dominate Earth’s surface?

• Forests

• Deserts

• Ice and snow

• Grasslands

Answer explanation

• Land cover consisted mainly of deserts both tropical and polar, ice sheets, tundras and grasslands.

• Forests were not as common during the LGM

Forests cover _% of Earth’s land cover and ice covers _% of Earth’s land cover

Answer explanation

31% of the earth's land cover is forests and 10 percent is glaciers and ice sheets

How many broad categories of land cover are there?

• 6

• 8

• 10

• 12

During the LGM temperatures were approximately on average how many degrees colder?

• 2

• 4

• 6

• 8

During the LGM how much lower were sea levels?

• 50 meters lower

• 75 meters lower

• 100 meters lower

• 125 meters lower

Define land cover

Answer explanation

The physical material covering the surface of the Earth broken down into 8 broad categories. (including water)

Outline the interconnection between land use and land cover

Answer explanation

There is a strong interconnection between land cover and land use. Land use is how people use of the varied land surfaces and land cover is often disturbed and changed due to human activity.

What is an example of a cultivated and managed land cover

• rice field

• mangrove

• palm plantation

• forest

Answer explanation

people must have removed the natural vegetation and replaced it with another type of vegetation. Further human activity is needed to sustain this land cover