Ten Geographic Ideas
That Changed the World
Adapted by James Hayes-Bohanan from the
book by
Susan Hanson.
Dr. Hayes-Bohanan is Associate Professor of Geography, Bridgewater
State College. He is also co-director of the U.S.-Brazil Consortium on Urban
Development.
More than most academic disciplines, geography has a bit of an identity
problem, as people commonly assume that the discipline was exemplified
by poorly-taught lessons of place-name memorization in grade school In
an effort to remedy this unfortunate situation, Dr. Susan Hanson
assembled a distinguished group of geographers to write about ten
important geographic ideas. Their goal was not to describe the field of
geography systematically or fully; rather, they set out to provide
non-geographers with ten, solid examples of geographic ideas. They
succeeded admirably, and have helped professional geographers
everywhere to be more articulate about our profession. The following
excerpts are meant to provide the briefest introduction, so that
readers can follow up by getting hold of a copy
of the book. A full
citation appears at the bottom of the page.
"Of all the ideas
explored and developed by geographers over the last several thousand
years, the map has become the most central to Western civilization.
Once the privilege instrument of monarchs and prelates, it is now the
everyday tool of magazine readers, weather watchers, mall users, museum
visitors, and the dwellers of labyrinthine modern office buildings....
"All maps are not
born equal. The placemat map and the topographic map play radically
different social roles, depending not only on their intrinsic nature
but also on the context of their production and use.... Central to many
of our most astonishing discoveries, from continents to the earth's
history, the map is also a testament to our overweening desire to
control and dominate others, nature, and even our past."
2.
The Weather Map: Exploiting Electronic Telecommunications to Forecast
the Geography of the Atmosphere Mark Monmonier
"Weather is the soap opera we all watch.... An ongoing drama that
affects our lives, the weather story is common ground for casual
conversations and new acquaintances. What we rarely talk about, though,
is the way the story reaches us. Instead of going outside to sniff the
breeze, we merely turn on the television or check the daily paper for a
wealth of information about today's weather, tomorrow's weather, and
weather across the country. Weather maps have well-established slots on
morning and evening TV newscasts and are the starring attraction on
their own cable channel, available 24 hours a day.... Snapshot views of
the state of the weather are so readily available, we easily forget
they are one of the great inventions of modern geography."
3.
Geographic Information Systems Michael F. Goodchild
"Over the past
three decades [now closer to four], as part of a more general trend
toward the use of digital technology for information handling, a
significant change has occurred in the nature of geographic information
and its role in society. Unlike numbers and text, maps and images have
created major problems for digital storage and processing because of
their relative complexity and high density of information. The
so-called 'geographic information technologies' that have appeared over
the past twenty [or more] years and grown to form a major new area of
application in electronic data processing are the result of significant
research developments in hardware and software. The new technologies
are likely to be every bit as the map has been on our thinking about
the world. They broaden our perspective by offering new capabilities
that are less constrained, but at the same time they impose new filters
that may be just as subtle as the ones associated with paper maps."
PART
II: THE WORLD AS A HUMAN HOME
4. Human
Adjustment Robert W. Kates
"The concept of
human adjustment, applied fifty years ago to floodplains and now to
global [climate] change, has served as a practical guide to action, as
research paradigm, and as aspiration for humane coexistence with the
natural world. The concept is rooted in antiquity as 'art in
partnership with nature,' but it was first given its modern expression
by Gilbert F. White.
Based on research in which he identified eight specific forms of human
adjustment to floods, White identified four principles to ensure the
optimal use of floodplains. "First, public policy should take into
account all possible adjustments. Second, it should recognize that
adjustments are not neutral but rather can favor one form of floodplain
use over others. Therefore, third, society should consider carefully
the various uses of the floodplains made possible by such adjustments,
recognizing the differential need for floodplain use and location. And
fourth, society should weigh the full range of social costs and
benefits it incurs in employing these adjustments, not merely the costs
and benefits that are easy to measure."
Kates goes on to describe how White's paradigm shift -- sometimes
called (archaically) the Man-Land tradition -- has influenced public
policy related to a wide variety of environmental hazards and
constraints.
5.
Water Budget Climatology John R. Mather
"Many
knowledgeable individuals believe that water will be the next real
environmental crisis for the world. Many regions of the word face
difficult water problems, including quality and quantity of supply,
ownership of water rights, the loss of fresh water sources through
misuse, and even the need to create new supplies to meet growign
demands. Comprehensive plans based on quantitative knowledge of our
water resources are necessary if rational development of these
resources is to occur.
"The concept of a climatic water budget is fundamental to any
evaluation of what might happen as societies, either willfully or
inadvertently, undertake both small- or large-scale modifications of
their environments. Such a water budget results from a daily, weekly,
or monthly comparison of the supply of water from precipitation with
the climatic demand for water as given by evapotranspiration...."
These budgets are influenced both by "natural" factors and by changes
in either precipitation, temperature, or land use invoked by humans
(see Chapter 6 below). Land use matters greatly, because different
surfaces can store dramatically different amounts of water in the soil,
and can likewise evaporate dramatically different amounts of water from
plant or inert surfaces.
6.
Human Transformation of the Earth William B. Meyer and B. L.
Turner, II
"In the phrase
'human transformation of the eart,' the adjective is not superflous.
For billions of years, the earth has been transforming itself, changing
both ephemerally and irreversibly at scales from the local to the
global. The recognition of natural environmental transformation is an
idea with a long and interesting history of its own. Recognition of
such change has often gone along with the idea that we should do what
we can to stop it.... But as the twentieth century draws to a
close, human action has become unmistakeably the principle force
altering the earth's surface, and in the minds of many, it has become
far more threatening than any natural force of change."
PART
III: THE WORLD AS A LINKED MOSAIC
7. Spatial
Organization and Interdependence Edward J. Taaffe
"Evidence for the
many ways in which spatial organization links individuals, cities,
regions, and nations is around us every day. Driving through the
countryside from Milwakee to Chicago, for instance, we notice that
television antennas bein to change from north-pointing to
south-pointing, and that the mailbox logos shift from Milwaukee
newspapers to Chicago newspapers. The network television programs we
watch in either city will usually emanate from New York, Washington, or
Los Angeless -- and will often focus on events in far-off places such
as London, Moscow, or Sarajevo. Understanding the spatial organization
that links cities, regions, and nations is increasingly essential as
improved transport and communications speed up the daily flows of
peopl, goods, and information. As these linkages accelerate and
strengthen, the interdependence of
places at all geographic scales becomes increasingly clear.... The
geographer's concern with spatial organization is reflected at all
scales, within and among neighborhoods, cities, regions, and nations."
8.
Nested Hexagons: Central Place Theory Elizabeth K. Burns
"As Labor Day
approaches, we travel with our children to a regional mall to buy
back-to-school clothing, but for a pair of socks a small neighborhood
store will usually suffice. We do our weekly grocery shopping at a
neighborhood supermarket or discount warehouse, but when all we need is
a half-gallon of milk or a bag of Doritos, we go to the nearest
convenience store or gas station food mart. For a routine medical
checkup we go to a nearby doctor's office or clinic, but for major
surgery we travel to a large regional hospital.
"Similar patterns can be found in the largest metropolitan areas and
smallest rural towns."
...
"Central place theory provides a comprehensive approach to
understanding the spatial organization of human settlements,
specifically the location of consumer goods and services. Its wide
influence lies in recognizing predictable relationships among
consumers, firms, and urban places."
9.
Megalopolis: The Future is Now Patricia Gober
"The idea of
megalopolis was popularized by the French geographer, Jean Gottmann,
around 1960. The term can be used in two ways: as the proper name for
Gottmann's original study area -- the urbanized Northeast of the United
States -- and as a generic term for the coalescence of metropolitan
areas into a continuous network of urban development. Megalopolis
symbolized an enlarged scale of urban life, new forms of spatial
organization, changing modes of economic behavior, and the advent of
information as the raw material of urban economic life. Gottmann went
so far as to argue that megalopolis signaled a turning ponit in the
history of human settlement.
"This chapter explores how and why did megalopolis become such an
important idea, how it was used to explain the momentous geographic,
economic, political, and social changes in American cities, what
effects it had on the discipline of geography, how it entered the
popular lexicon, and what it says about the future of urbanization
worldwide."
PART
IV: CODA
10.
Sense of Place Edward Relph
"...sense of
place can be a learned skill for critical environmental awareness that
is used to grasp what the world is like and how it is changing."