the characteristics and global distribution of the major types of natural land cover, and how land cover differs from land use

What this dot point is asking

VCAA wants you to be able to identify the major natural land cover types, describe where they occur on a global scale, explain why they sit where they do, and clearly separate the idea of land cover from land use. This is the foundation for everything else in Unit 3, because you cannot analyse land cover change without first knowing the original cover.

Defining land cover

The distinction matters. A single land cover, say native forest, could be put to many land uses: timber harvesting, ecotourism, a national park or being cleared for grazing. When you answer exam questions, keep the two ideas separate, because the study design treats land cover change (Area of Study 1) and land use change (Area of Study 2) as different processes.

The major types of natural land cover

The VCAA study design recognises these broad categories of natural land cover:

• Forest covers roughly 30 percent of the world's land area and includes tropical rainforest, temperate forest and boreal (taiga) forest.
• Grassland includes tropical savanna and temperate grassland such as the Australian rangelands and the African Serengeti.
• Tundra is the cold, treeless cover of high latitudes and high altitudes, underlain by permafrost.
• Bare land includes hot deserts such as the Sahara and the Australian arid interior, and cold polar deserts.
• Wetlands include swamps, marshes and floodplains such as the Kakadu wetlands in the Northern Territory.
• Land covered by water includes rivers, lakes and inland seas.
• Ice and snow covers Antarctica, Greenland and high mountain glaciers.

Global distribution and the factors that shape it

Land cover is not random. Its global distribution follows predictable patterns controlled by climate, which is itself shaped by latitude, altitude, and proximity to oceans.

Near the equator, high rainfall and warmth produce tropical rainforest, as in the Amazon Basin, the Congo Basin and South-East Asia. Moving toward the tropics, rainfall becomes seasonal and savanna grassland dominates, as in northern Australia and sub-Saharan Africa. The subtropical high-pressure belts around 30 degrees north and south create the great deserts, including the Sahara and the Great Sandy Desert. In the mid-latitudes, temperate forest and grassland appear, while the high latitudes carry boreal forest and then tundra. At the poles, permanent ice dominates.

Altitude repeats this pattern vertically: a single tall mountain can move from forest at its base through grassland and tundra to ice at its summit.

Describing distribution like a geographer

When the exam shows you a world land cover map, describe the pattern using geographic language: location (continents, hemispheres, latitude bands), the spatial association between cover and climate, and any anomalies. For example, you might note that forest is concentrated in equatorial and high-latitude bands, that deserts form belts around 30 degrees latitude, and that ice is confined to the poles and high mountains. Quantify where you can, and name real places.

Why this matters for the rest of Unit 3

Knowing the original natural cover lets you measure change. When you study deforestation in the Amazon, melting ice in the Arctic, or desertification in the Sahel, you are describing how the natural cover described here has been altered. A precise mental map of global land cover is the baseline against which all change is judged.