The global distribution of natural land cover: VCE Geography
“The characteristics and global distribution of the major types of natural land cover, and how land cover differs from land use”
Land cover is the physical material on the Earth's surface, such as forest, grassland, tundra, ice, wetland, bare land and water. It is distributed in broad global patterns shaped by climate, latitude and altitude. Land cover is what is there naturally, while land use is how humans use that land.
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
Land cover is the observed physical and biological material covering the surface of the Earth, including vegetation, water, ice, bare ground and built surfaces. Land use is the purpose humans apply to land, such as agriculture, mining, housing or conservation.
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.
The single biggest control on natural land cover is climate, and climate is governed mainly by latitude. This is why land cover forms broad latitudinal bands, from equatorial rainforest to polar ice, that you can describe using compass direction and distance from the equator.
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.
Question: Describe the global distribution of forest land cover.
Strong answer: Forest is concentrated in two main latitudinal bands. The first is the equatorial band, where dense tropical rainforest covers the Amazon Basin in South America, the Congo Basin in central Africa and the islands of South-East Asia. The second is the high northern latitude band between about 50 and 70 degrees north, where boreal forest stretches across Canada, Scandinavia and Russia. Temperate forest occupies the mid-latitudes of eastern North America, Europe and parts of eastern Australia. Forest is largely absent from the desert belts near 30 degrees latitude and from the polar regions.
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.
The most common error is using land cover and land use as if they mean the same thing. Writing that a forest is a land use, or that farming is a land cover, will lose marks. Land cover is the material on the ground; land use is the human purpose applied to it. State which one you mean every time.
Exam-style questions
Questions in the style of VCAA exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
2025 VCAA-style3 marksIdentify and describe a natural characteristic of a forest.Show worked answer →
This is a 3 mark short-answer question testing the characteristics of natural land cover. You need to identify one genuine natural (not human) characteristic of a forest and then describe it clearly, so award yourself roughly 1 mark for naming the characteristic and 2 marks for an accurate, specific description.
A strong response: "A natural characteristic of a forest is its multi-layered vegetation structure. A forest typically has a canopy of tall trees whose crowns form a continuous layer, an understorey of shorter trees and shrubs beneath it, and a ground layer of herbs, ferns and leaf litter. This layering develops naturally as plants compete for light, and it gives forests a high biomass and dense, closed vegetation cover compared with grassland or cropland."
Other acceptable characteristics include a closed tree canopy, high biodiversity, deep root systems, or a moist microclimate created by transpiration. The key is that the feature must be natural and clearly described, not simply named.
2025 VCAA-style4 marksCompare the distribution of grassland to that of coniferous forest, as shown in Figure 1. [Figure 1 showed the spatial distribution of vegetation cover by latitude]Show worked answer →
This 4 mark question tests the skill of comparing global land cover distribution from a graph. To "compare" you must state both a similarity or a difference and use evidence from the figure for each land cover type, so aim for two or three contrasting points referenced to latitude.
A strong response: "Coniferous forest is concentrated in the high latitudes of the Northern Hemisphere, peaking in the 60 to 70 degrees North band, and is almost absent from the Southern Hemisphere because there is little land at those southern latitudes. Grassland, by contrast, is spread more evenly across both hemispheres and appears across a much wider latitudinal range, including the low and middle latitudes. Both land cover types are largely absent from the equatorial zone, where tropical forest dominates. Overall, coniferous forest has a narrow, hemisphere-specific distribution, whereas grassland has a broader, more global distribution."
Markers reward explicit latitude references and a clear statement of both similarity and difference rather than two separate descriptions.