A thematic map is a type of map that focuses on a specific theme or topic, presenting spatial patterns and relationships of geographic data related to that theme. Unlike general reference maps, which provide a broad overview of geographic features like rivers, mountains, and political boundaries, thematic maps emphasise a particular subject matter. 

Thematic maps are designed to convey information about the structure of distribution, variation, and spatial patterns of a specific attribute or phenomenon. 

Thematic maps can represent a wide range of themes, both physical and cultural features, like population, settlement, resources, socio-economic attributes, transportation and trade, land use and land cover including topographical attributes, features of geological, climatic and vegetation etc.  it may be quantitative, qualitative or semi-quantitative. 

It uses various cartographic techniques to visually communicate information. Common methods include colour-coding, symbols, isolines (contour lines), and choropleth maps (shaded or patterned areas). The choice of symbology depends on the nature of the data being represented and the message the map aims to convey.

Geographic Information Systems (GIS) play a crucial role in thematic mapping, providing a powerful tool for visualising and analysing spatial data in a variety of fields. GIS helps in handling large amounts of spatial data and preparing digital thematic layers which is used for preparing thematic maps and multiple layer spatial analysis for spatial decision making. Present day digital cartography is purely based on GIS. Researchers, planners, government officials are now  using GIS for all these activities including production desired and required thematic maps. 

Advantages of GIS in thematic mapping:

1. Presenting a large amount of information quickly has become easier in a very short time,

2. The complexity of thematic map production has been reduced,

3. There is much more flexibility in using colours because it is possible to use many shades of the same colour. As a result, the acceptability of subject-based thematic maps has increased significantly,

4. In the field of subject-based thematic mapping, mathematical methods of various categories can be used in the categories in which the category is divided, so personal preferences have been minimised,

5. The use of modern spatial statistics is now possible in the field of subject-based thematic mapping, allowing for scientifically informed categorization,

6. Many innovations have been introduced in the design of maps, making subject-based thematic maps much more attractive,

7. The use of spatial statistics in modern demographic studies is now possible in the field of subject-based thematic mapping, allowing for scientifically informed categorization.

Examples of applications of GIS in thematic mapping:

Here are some examples, exploring how GIS enhances the representation and analysis of diverse spatial data:

1. Environmental Mapping:

GIS allows for the integration of environmental data, such as air and water quality measurements, satellite imagery, and ecological surveys. By mapping these variables, environmental scientists can visualise the distribution of pollutants, identify environmentally sensitive areas, and monitor changes over time.

2. Urban and regional Planning:

In urban planning, GIS is used to create thematic maps illustrating land use patterns. For example, zoning maps can show areas designated for residential, commercial, or industrial use. GIS also helps analyse infrastructure distribution, traffic patterns, and population density, aiding planners in making informed decisions about city development and resource allocation of the city and surrounding countrysides. 

3. Health Mapping:

Thematic mapping in GIS is crucial for tracking the spread of diseases. Health professionals use GIS to map the locations of reported cases, identify clusters, and assess the effectiveness of intervention strategies. GIS also plays a role in resource allocation, helping health organisations direct personnel and supplies to areas in need.

4. Geological Mapping:

GIS is extensively used in geology to create geological maps that represent various features of the Earth's crust. These maps may include information on rock types, fault lines, and mineral deposits. Geologists rely on GIS to identify areas with high mineral potential, assess geological hazards, and plan for sustainable land use.

5. Demographic Mapping:

Thematic maps in GIS are employed to represent demographic data such as population distribution, age structures, and socio-economic indicators. Policymakers use these maps to understand population trends, plan for public services, and address social inequalities.

6. Climatic Mapping:

GIS facilitates the creation of climatic maps by integrating data from weather stations, satellites, and climate models. These maps can show temperature variations, precipitation patterns, and climate zones. Climate researchers use GIS to analyse changes over time, study the impacts of climate change, and plan for adaptation strategies.

7. Transportation Planning:

GIS is a valuable tool for transportation planning, providing insights into traffic patterns, road networks, and public transportation systems. Planners use GIS to identify areas with high congestion, plan for new transportation infrastructure, and optimise routes for logistics and emergency services.

8. Land Use Planning:

Thematic mapping in GIS is fundamental to land use planning. By mapping land cover, zoning regulations, and development plans, GIS helps planners make informed decisions about where to allocate resources, where to encourage or restrict development, and how to balance urbanisation with environmental conservation.

9. Agricultural Mapping:

GIS is employed in agriculture to map crop types, soil characteristics, and irrigation patterns. Farmers and agricultural experts use this information to optimise crop yields, manage resources efficiently, and monitor the health of crops. Precision agriculture, which relies on GIS, allows for targeted application of resources such as water and fertilisers.

10. Natural Resource Management:

GIS is crucial for mapping and managing natural resources. Forestry departments use GIS to map forest cover, monitor deforestation, and plan for sustainable logging. Water resource managers use GIS to map watersheds, monitor water quality, and plan for water conservation measures. GIS also aids in mapping and managing mineral resources, helping to balance extraction with environmental conservation.

In essence, GIS enhances thematic mapping by providing a spatial framework for understanding complex relationships within and between different thematic layers. The ability to visualise, analyse, and interpret spatial data is a powerful asset across various domains, contributing to informed decision-making and sustainable resource management.

 Classification of Tourism

There are different criteria of classification of tourism.  These criteria as based on the purpose, place, nature, distance or visit etc. Hereunder, we discuss these aspects, vary briefly. 

1. On the basis of purpose Tourism has been classified in following classes:

Recreational Tourism: This is where mass and popular package tours seek mainly sun-sea-sand and fresh air or sporting activities of various kinds. These groups are mainly seeking a change and rest.

Cultural Tourism: Here the aim is to experience new cultural activities i.e., folklore, art, music etc.

Historical/Heritage Tourism: This involves visit to heritage locations, museums, churches, temples etc.

Ethnic Tourism: This involves contact with unusual or old-fashioned customs in remote areas, visiting the families’ country of origin and relatives and friends.

 Environmental Tourism: The higher income groups in particular area is interested in visiting remote environment.

Adventure Tourism: This is geared to promote mountaineering, trekking, skiing, river rafting, gliding and other adventure activities.

Business Tourism: When tourism is done based on business purpose in mind.

Wellness / Health Tourism: When tourism is done to recover health in areas, like sea beaches, mountain resorts, hot springs etc.

Medical Tourism: Travelling to another country or region to receive medical treatment or procedures, often at a lower cost or with better facilities. India is now the leading destination for medical tourism for its global clients.  Surrogacy is a part of medical tourism where foreign clients come to India to rent mothers wombs for their child, which is called surrogacy and it is a popular business right now in India. 

Wildlife Tourism: Travel for enjoying the fascinating beauty and abode of wildlife.

Educational Tourism: Tourism may also be developed on basis of meetings, conference, congress of symposia. Extension of University, academic centers and colleges may provide opportunities.

Agro/Rural tourism: Agro Tourism contains, for example, the construction of tourists’ accommodations and facilities at farmers’ places, besides; tourists may watch the processing of farm products. Visiting rural areas to experience and participate in agricultural activities, local culture, and a more traditional way of life.

MICE Tourism: Meeting Incentive Conference and Exhibition tourism. Travelling for business-related events, conferences, and exhibitions, often with the goal of networking and professional development.

2. On the basis of scale Tourism can be classified in two categories:

 Domestic Tourism: The travel by people, outside their normal domicile, in other areas within their own country.

International Tourism: This involves the movement of people between different countries in the world.

3. On the basis of ecological sustainability Tourism may of two kinds:

Mass Tourism: Where general people involve without proper attention on eco-conservation.

 Eco-Tourism: Tourism that develops and considers the conservation of natural, cultural and historical resources.

Sustainable Tourism: Sustainable tourism refers to an approach to travel and tourism that seeks to minimise the negative impact on the environment, culture, and communities, while maximising the benefits for both the travellers and the destinations. The goal of sustainable tourism is to ensure that tourism activities contribute to the well-being of local communities, preserve natural and cultural resources, and promote long-term environmental and social sustainability. 

4. On the basis of involvement of local people in tourism activity:

Induced Tourism: Where tourists’ services are provided by outsiders, no involvement of local people.

Organic Tourism: Where local people actively participate in tourism activity.

5. Other types of Tourism are:

Urban Tourism: urban areas act as tourism destinations, attracting domestic as well as international visitors. Tourists visit urban areas for various reasons- night life and entertainment, enjoying historical and cultural attractions, attending major sports events, for shopping etc.

Dark Tourism: Visiting sites associated with tragedy, death, or disaster, like the Hiroshima Peace Memorial or the Auschwitz concentration camp.

Grave Tourism: visiting the sites of graveyards of ancestors by the successors is also a form of tourism mainly in colonial countries like India, where many graves are there of European officers and civilians. 

Cruise Tourism: Travelling in a cruise ship along the river or coastline, visiting a number of places is a popular form of recreational mass tourism all over the world. Cruise tourism in the river Ganga is a popular form of tourism in Eastern India. 

Space tourism: Taking a trip to space for recreational, leisure, or adventure purposes, as the space tourism industry develops.

Ocean Tourism: taking a trip to the deep Ocean for adventure and recreational purposes. 

Gastronomic/ Food tourism: Travelling to explore and experience different cuisines and food cultures, such as taking a culinary tour in Italy. Tourism in Bangladesh based on Hilsa along the Padma river is an example. 

Second homes: mainly in developed countries for people living in cities, a rural home is used at the weekend as a complement to city apartment.

Film Tourism: Visiting locations that were featured in movies or TV shows, such as fans travelling to New Zealand to see the filming locations of "The Lord of the Rings”, or to see “Ramuji film city” film Baahubali was filmed.