is a branch of geography that focuses on the study of patterns and processes that shape human interaction with various environments. It encompasses
aspects. While the major focus of human geography is not the physical landscape of the Earth (see
), it is hardly possible to discuss human geography without referring to the physical landscape on which human activities are being played out, and
is emerging as a link between the two. Human geography can be divided into many broad categories, such as:
Various approaches to the study of human geography have also arisen through time and include:
Environmental geography
Environmental geography is the branch of geography that describes the spatial aspects of interactions between humans and the natural world. It requires an understanding of the traditional aspects of physical and human geography, as well as the ways in which human societies conceptualize the environment.
Environmental geography has emerged as a bridge between human and physical geography as a result of the increasing specialisation of the two sub-fields. Furthermore, as human relationship with the environment has changed as a result of
globalization and
technological change a new approach was needed to understand the changing and dynamic relationship. Examples of areas of research in environmental geography include
emergency management,
environmental management,
sustainability, and
political ecology.
Geomatics
thumb|right|Digital Elevation Model (DEM)Geomatics is a branch of geography that has emerged since the quantitative revolution in geography in the mid 1950s. Geomatics involves the use of traditional spatial techniques used in cartography and topography and their application to computers. Geomatics has become a widespread field with many other disciplines using techniques such as GIS and remote sensing. Geomatics has also led to a revitalization of some geography departments especially in Northern America where the subject had a declining status during the 1950s.
Geomatics encompasses a large area of fields involved with
spatial analysis, such as
Cartography,
Geographic information systems (GIS),
Remote sensing, and
Global positioning systems (GPS).
Regional geography
Regional geography is a branch of geography that studies the regions of all sizes across the
Earth. It has a prevailing descriptive character. The main aim is to understand or define the uniqueness or character of a particular region which consists of natural as well as human elements. Attention is paid also to
regionalization which covers the proper techniques of space delimitation into regions.
Regional geography is also considered as a certain approach to study in geographical sciences (similar to
quantitative or
critical geographies, for more information see
History of geography).
Related fields
- Urban planning, regional planning and spatial planning: use the science of geography to assist in determining how to develop (or not develop) the land to meet particular criteria, such as safety, beauty, economic opportunities, the preservation of the built or natural heritage, and so on. The planning of towns, cities, and rural areas may be seen as applied geography.
- Regional science: In the 1950s the regional science movement led by Walter Isard arose, to provide a more quantitative and analytical base to geographical questions, in contrast to the descriptive tendencies of traditional geography programs. Regional science comprises the body of knowledge in which the spatial dimension plays a fundamental role, such as regional economics, resource management, location theory, urban and regional planning, transport and communication, human geography, population distribution, landscape ecology, and environmental quality.
- Interplanetary Sciences: While the discipline of geography is normally concerned with the Earth, the term can also be informally used to describe the study of other worlds, such as the planets of the Solar System and even beyond. The study of systems larger than the earth itself usually forms part of Astronomy or Cosmology. The study of other planets is usually called planetary science. Alternative terms such as Areology (the study of Mars) have been proposed, but are not widely used.
Geographical techniques
As spatial interrelationships are key to this synoptic science,
maps are a key tool. Classical
cartography has been joined by a more modern approach to geographical analysis, computer-based
geographic information systems (GIS).
In their study, geographers use four interrelated approaches:
- Systematic - Groups geographical knowledge into categories that can be explored globally.
- Regional - Examines systematic relationships between categories for a specific region or location on the planet.
- Descriptive - Simply specifies the locations of features and populations.
- Analytical - Asks why we find features and populations in a specific geographic area.
Cartography
Cartography studies the representation of the Earth's surface with abstract symbols (map making). Although other subdisciplines of geography rely on maps for presenting their analyses, the actual making of maps is abstract enough to be regarded separately. Cartography has grown from a collection of drafting techniques into an actual science.
Cartographers must learn
cognitive psychology and ergonomics to understand which symbols convey information about the Earth most effectively, and
behavioral psychology to induce the readers of their maps to act on the information. They must learn
geodesy and fairly advanced
mathematics to understand how the
shape of the Earth affects the distortion of map symbols projected onto a flat surface for viewing. It can be said, without much controversy, that cartography is the seed from which the larger field of geography grew. Most geographers will cite a childhood fascination with maps as an early sign they would end up in the field.
Geographic information systems
Geographic information systems (GIS) deal with the storage of information about the Earth for automatic retrieval by a computer, in an accurate manner appropriate to the information's purpose. In addition to all of the other subdisciplines of geography, GIS specialists must understand
computer science and
database systems. GIS has revolutionized the field of cartography; nearly all mapmaking is now done with the assistance of some form of
GIS software. GIS also refers to the science of using GIS software and GIS techniques to represent, analyze and predict spatial relationships. In this context, GIS stands for Geographic Information Science.
Remote sensing
Remote sensing is the science of obtaining information about Earth features from measurements made at a distance. Remotely sensed data comes in many forms such as
satellite imagery,
aerial photography and data obtained from hand-held sensors. Geographers increasingly use remotely sensed data to obtain information about the Earth's
land surface, ocean and atmosphere because it: a) supplies objective information at a variety of spatial scales (local to global), b) provides a synoptic view of the area of interest, c) allows access to distant and/or inaccessible sites, d) provides spectral information outside the visible portion of the
electromagnetic spectrum, and e) facilitates studies of how features/areas change over time. Remotely sensed data may be analyzed either independently of, or in conjunction with, other digital data layers (e.g., in a Geographic Information System).
Geographic quantitative methods
Geostatistics deal with
quantitative data analysis, specifically the application of statistical methodology to the exploration of geographic phenomena. Geostatistics is used extensively in a variety of fields including:
hydrology,
geology,
petroleum exploration, weather analysis,
urban planning,
logistics, and
epidemiology. The mathematical basis for geostatistics derives from
cluster analysis,
linear discriminant analysis and
non-parametric statistical tests, and a variety of other subjects. Applications of geostatistics rely heavily on
geographic information systems, particularly for the
interpolation (estimate) of unmeasured points. Geographers are making notable contributions to the method of quantitative techniques.
Geographic qualitative methods
Geographic qualitative methods, or ethnographical; research techniques, are used by human geographers. In
cultural geography there is a tradition of employing
qualitative research techniques also used in
anthropology and
sociology.
Participant observation and in-depth interviews provide human geographers with qualitative data.
History of geography
The ideas of
Anaximander (c. 610 B.C.-c. 545 B.C.), considered by later Greek writers to be the true founder of geography, come to us through fragments quoted by his successors. Anaximander is credited with the invention of the gnomon,the simple yet efficient Greek instrument that allowed the early measurement of latitude. Thales, Anaximander is also credited with the prediction of eclipses. The foundations of geography can be traced to the ancient cultures, such as the ancient, medieval, and early modern
Chinese. The
Greeks, who were the first to explore geography as both
art and
science, achieved this through
Cartography,
Philosophy, and
Literature, or through
Mathematics. There is some debate about who was the first person to assert that the Earth is spherical in shape, with the credit going either to
Parmenides or
Pythagoras.
Anaxagoras was able to demonstrate that the profile of the Earth was circular by explaining
eclipses. However, he still believed that the Earth was a flat disk, as did many of his contemporaries. One of the first estimates of the radius of the Earth was made by
Eratosthenes.
The first rigorous system of
latitude and longitude lines is credited to
Hipparchus. He employed a
sexagesimal system that was derived from
Babylonian mathematics. The parallels and meridians were sub-divided into 360°, with each degree further subdivided 60′ (
minutes). To measure the longitude at different location on Earth, he suggested using eclipses to determine the relative difference in time. The extensive mapping by the
Romans as they explored new lands would later provide a high level of information for
Ptolemy to construct detailed
atlases. He extended the work of
Hipparchus, using a grid system on his maps and adopting a length of 56.5
miles for a degree.
From the 3rd century onwards,
Chinese methods of geographical study and writing of geographical literature became much more complex than what was found in Europe at the time (until the 13th century).
Chinese geographers such as
Liu An,
Pei Xiu,
Jia Dan,
Shen Kuo,
Fan Chengda,
Zhou Daguan, and
Xu Xiake wrote important treatises, yet by the 17th century, advanced ideas and methods of Western-style geography were adopted in China.
During the
Middle Ages, the
fall of the Roman empire led to a shift in the evolution of geography from
Europe to the
Islamic world.
[Needham, Joseph (1986). Science and Civilization in China: Volume 3. Taipei: Caves Books, Ltd. Page 512.] Muslim geographers such as
Muhammad al-Idrisi produced detailed world maps (such as
Tabula Rogeriana), while other geographers such as
Yaqut al-Hamawi,
Abu Rayhan Biruni,
Ibn Battuta and
Ibn Khaldun provided detailed accounts of their journeys and the geography of the regions they visited. Turkish geographer,
Mahmud al-Kashgari drew a world map on a linguistic basis, and later so did
Piri Reis (
Piri Reis map). Further, Islamic scholars translated and
interpreted the earlier works of the
Romans and
Greeks and established the
House of Wisdom in
Baghdad for this purpose.
Abū Zayd al-Balkhī, originally from
Balkh, founded the "Balkhī school" of terrestrial mapping in
Baghdad.
[E. Edson and Emilie Savage-Smith, Medieval Views of the Cosmos, pp. 61-3, Bodleian Library, University of Oxford] Suhrāb, a late tenth century Muslim geographer, accompanied a book of geographical coordinates with instructions for making a rectangular world map, with
equirectangular projection or cylindrical equidistant projection.
[ In the early 11th century, Avicenna hypothesized on the geological causes of mountains in The Book of Healing (1027).]
Abu Rayhan Biruni (976-1048) first described a polar equi-azimuthal equidistant projection of the celestial sphere. He was regarded as the most skilled when it came to mapping cities and measuring the distances between them, which he did for many cities in the Middle East and Indian subcontinent. He often combined astronomical readings and mathematical equations, in order to develop methods of pin-pointing locations by recording degrees of latitude and longitude. He also developed similar techniques when it came to measuring the heights of mountains, depths of valleys, and expanse of the horizon. He also discussed human geography and the planetary habitability of the Earth. He hypothesized that roughly a quarter of the Earth's surface is habitable by humans.
thumb|185px|right|Self portrait of Alexander von Humboldt, one of the early pioneers of geography
The European Age of Discovery during the 16th and 17th centuries, where many new lands were discovered and accounts by European explorers such as Christopher Columbus, Marco Polo and James Cook, revived a desire for both accurate geographic detail, and more solid theoretical foundations in Europe.
The 18th and 19th centuries were the times when geography became recognized as a discrete academic discipline and became part of a typical university curriculum in Europe (especially Paris and Berlin). The development of many geographic societies also occurred during the 19th century with the foundations of the Société de Géographie in 1821, the Royal Geographical Society in 1830, Russian Geographical Society in 1845, American Geographical Society in 1851, and the National Geographic Society in 1888. The influence of Immanuel Kant, Alexander von Humboldt, Carl Ritter and Paul Vidal de la Blache can be seen as a major turning point in geography from a philosophy to an academic subject.
Over the past two centuries the advancements in technology such as computers, have led to the development of geomatics and new practices such as participant observation and geostatistics being incorporated into geography's portfolio of tools. In the West during the 20th century, the discipline of geography went through four major phases: environmental determinism, regional geography, the quantitative revolution, and critical geography. The strong interdisciplinary links between geography and the sciences of geology and botany, as well as economics, sociology and demographics have also grown greatly especially as a result of Earth System Science that seeks to understand the world in a holistic view.Notable geographers
thumb|right|200px|The Geographer by Johannes Vermeer- Eratosthenes (276BC - 194BC) - calculated the size of the Earth.
- Alexander von Humboldt (1769–1859) - Considered Father of modern geography, published the Kosmos and founder of the sub-field biogeography.
- Carl Ritter (1779-1859) - Considered Father of modern geography. Occupied the first chair of geography at Berlin University.
- Paul Vidal de la Blache (1845-1918) - founder of the French school of geopolitics and wrote the principles of human geography.
- Yi-Fu Tuan (1930-) - Chinese-American scholar credited with starting Humanistic Geography as a discipline.
- Edward Soja (born 1941) - Noted for his work on regional development, planning and governance along with coining the terms Synekism and Postmetropolis.
Geographical institutions and societies
Publications
See also
Notes and references
