Why land resource evaluation is hard
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Most evaluations in which planners and landscape
architects get to participate address either trade-offs of values of public
land (e.g., mining vs. wildlife) or the values of private land vs. public
(e.g., converting public to private or vice versa).
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Public lands encompass "Common Pool Resources"
whose uses are usually regulated by negotiated policies and agreements,
rather than market forces.
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Common Pool Resources include many that are
typically regarded as "intangible" or hard to evaluate (e.g., scenery,
clean air, clean water, as well as real estate values, timber, and grazing
rights).
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Establishing agreements on use of public land
will entail a simultaneous consideration of multiple values.
Readings:
Hardin, Garrett, 1987. The
Tragedy of the Commons, Chapter 3 In: G. Hardin (ed), Managing the
Commons, W.H. Freeman: San Francisco. pp16-30. (Also Science 162, 1243-1248.)
Price, Colin, 1988. Landscape
Economics, London: Macmillan. Chapters 1, 2 and 3, pp 1-29.
Helliwell, D.R., 1994. Expert
judgement quantified. Landscape Research, 19(1), 7-9.
Key issues and concepts in evaluation:
The arena
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private dominion
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imperial/state autocracy
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centrally regulated bureaucracy
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public/private partnerships
The vehicles
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barter
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money (shells, knotted strings, coins and
bills)
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bene, sat, util, delight
Problem issues that get raised
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tangibles and intangibles
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individual differences of opinion
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inequities of supply: spatial and quality
Economic evaluation:
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Simple financial cost/unit cost -- assigning
current values
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Opportunity cost -- foregoing alternate values
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Option demand -- including value to others
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Discounted future value -- considering future
values
The Commons dilemma -- some economic responses
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mutually agreed mechanisms for exchange are
the means by which we avoid the runaway exploitation of common goods
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economic evaluation of farmland, urban real
estate and hunting rights has gone some way to ensuring equitable use of
some aspects of those goods
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the mechanisms for applying dollar values
to the fair use of clean air and water, beautiful mountain vistas and remote
hiking trails are less well-developed but examples do exist
Discussion of readings:
The Tragedy of the Commons:
Garrett Hardin
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Hardin's description is a landmark writing
offering an explanation for why wise use of environmental resources is
so difficult to achieve
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It suggests that it is impossible and unwise
to rely on human conscience as a mechanism for regulating use
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He highlights the necessity of systems of
coercion for establishing the controls.
Landscape Economics:
Colin Price
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Addresses the commonly raised objections to
landscape resource evaluation: Intangibility, Eye-of-the-beholder, Availability.
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Highlights the necessity to develop explicit
evaluation systems.
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He shows how basic concepts such as simple
financial costings, opportunity costs, unit costs, and option demand operate
in the context of land resource evaluation.
Case study:
A simple approach to evaluation
Tree evaluation: Helliwell.
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Application of a set of expert judgements
to the evaluation of a landscape resource
Focus groups
Refine the categories of land use to investigate
as part of this class.
Process:
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Invite 'citizens' to form small groups and
identify facilitators
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Invite discussion to identify possible land
use changes
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Report back to group
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Discuss ideas as group
Discuss effectiveness of focus group processes
Emerson Park Maps
Practical 3
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Work in teams to consider the economic evaluation
of a land use change.
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Describe the items you will include in a simple
financial costing of your proposed change.
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Prepare a spreadsheet in EXCEL that estimates
as many as possible of the economic costs and benefits of your proposed
change.
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Publish on the WWW including descriptions
of the elements in your evaluation, how you came up with the unit $ values,
and the EXCEL spreadsheet as a table.
Readings for next Monday:
McAllister, D.M., 1980. Evaluation
in Environmental Planning. Cambridge, MA: MIT. Chapter 5, 67-83.
Willis, Ken, 1994. Contingent
valuation in a policy context. Landscape Research, 19(1), 17-20.
Modified: 1 August 1999, Brian Orland