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Subject: RE: some questions on landscape indices and artifical landscapes
From: Nicolas Becu (becu@uni-hohenheim.de)
Date: Wed Feb 02 2005 - 08:36:46 CET
Hello Paolo,
In the case of the CatchScape model, we took the option with Pascal to have
a schematic representation of the "landscape".
That means that we respected the general spatial arrangement of the
landscape (paddy area at the center of the valley, upland plots on the sides
and forest around) but didn't try to redraw the actual map of the case study
catchment. (that's slide one in the attached file)
Regarding indices, we had to respect a number of parameters: mainly land use
and soil type. Therefore we created the map so that the proportions of soil
types for each land use were as in reality. That means that the percentage
of soil type 1 within land use A is the same for the Cormas map and for
reality. And etc.. for all soil types and land use types. (that's slide 2
in the attached file)
Hope that helps
Cheers
Nicolas
-----Original Message-----
From: owner-cormas@cirad.cirad.fr [mailto:owner-cormas@cirad.cirad.fr] On
Behalf Of Paolo Campo
Sent: 28 January 2005 02:34
To: CORMAS
Subject: some questions on landscape indices and artifical landscapes
Hello Cormas group!
I would like to ask if there have been studies regarding creating an
artificial landscape using
values of landscape indices derived from a real landscape?
Related to above-mentioned question are more questions:
1) Under what conditions is it possible to create an artificial landscape
from a derived set of
indices?
2) How many indices were used to create the artificial landscape, what were
they (indices) and how
were they chosen?
3) Is there any merit or advantage in doing this as compared to just
creating an artificial
landscape by qualitative means?
4) Is possible to create an artificial landscape that is multi-dimensional,
i.e. creating an
artificial landscape using several layers of information?
5) Is it possible to use this method to scale up/down the landscape in terms
of area?
6) Is there a software or program that could do this automatically?
The plan is to use a representative model of the study site but with a
smaller area for the
environment. This also means that we are going to scale down the MAS model
in terms of the number
of entities and the interactions. We were thinking that if we are going to
apply spatial analyses
on the representative model, it would still be applicable to the real
landscape, and this method
would provide a numerical or statistical basis for the applicability of the
analyses to the real
landscape.
Any reference that you could recommend that would answer any of these
questions, especially the
first one, will be very much appreciated.
Thank you in advance.
Cheers,
Paolo
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