Question

explain the use and types of distributional maps

Answer 1

The different types of distribution maps are

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1. Dots Map: It uses dots to represent the value of an area. One dot is usually equal to 1000 people. It helps to identify patterns and is easy to understand

2. Chloropleth Map: Different or a range of colours is used in this type. It is more useful when defining regions are important for a discussion

3. Distribution Map: This map uses circles to represent values. Since they show absolute values and percentages can be derived from these values, it is useful where actual data needs to be discussed

4. Isoline Map: Lines of equal value or similar colours/patterns are used in this map. It is useful to show gradual change over a period of time.

Answer 2

Explanation:

(a) Use of distributional maps : The distributional maps are useful for explaining the patterns of distribution of a particular geographical variable.

(b) Types of distributional maps : The following are the types of distributional maps.

(i) Dot Method : The distributional maps based on statistical data, made by this method make use of dots of a pre-decide size to show the distribution of a particular variable. e.g. Dot method map is used to show population of a region, distribution of cattle etc.

(ii) Choropleth Method : The distributional map made by this method makes use of shades or tints of various colours, to show the distribution of particular variable. e.g. Choropleth method map is used to show population density, types of forest cover, uses of land.

(iii) Isopleth Method : The distributional map made by this method makes use of line joining locations or places having same or equal values of a particular variable. e.g. Isopleth method map is used to show altitude, temperature, rainfall.