Cite as: |
Meyer, H.; Thies, B. & Bendix, J. (2011): <b>Land use/land cover map of South Ecuador 2001.</b> <i>Available online (http://www.tropicalmountainforest.org/data_pre.do?citid=1039) from DFG-FOR816dw.</i> |
Resource Description
|
|
|
Associated entities to this dataset: |
Attribute Name -- Attribute Label |
Unit |
Attribute definition |
Land_use
--
land use
|
no unit |
Land use |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
--- Step
1
---
|
Title
:
|
Cloud mask development |
Description
:
|
Training sites of clouded and unclouded areas were selected. A maximum likelihood classifier was then used for cloud classification. Since cloud edges and especially cloud shadows could not be identified in this way, they were digitized manually. |
Instrumentation:
|
Instrument:
Description:
|
Instrument: Idrisi
|
Vendor: Clark Labs
|
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|
--- Step
2
---
|
Title
:
|
Atmospheric Correction (Cos(t) model) |
Description
:
|
The Atmospheric correction was accomplished using the Cos(t) model (Chavez 1996) which is implemented in IDRISI (Eastman 2006). The information used for the correction could be found in the metadata of the Landsat images. |
Instrumentation:
|
Instrument:
Description:
|
Instrument: Idrisi
|
Vendor: Clark Labs
|
|
Citation:
|
Eastman, J
.
(2006):
IDRISI Andes guide to GIS and image processing
. Available online
(http://tropicalmountainforest.org/publications.do?citid=1037) from DFG-FOR816dw.
|
Citation:
|
Chavez, P
.
(1996):
Image-based atmospheric corrections – Revisited and improved
. Available online
(http://tropicalmountainforest.org/publications.do?citid=1036) from DFG-FOR816dw.
|
|
--- Step
3
---
|
Title
:
|
Topographic correction |
Description
:
|
The topographic correction was done by a statistical- empirical approach described in Eastman (2006). For this purpose, a SRTM 90m digital elevation model and metadata from the Landsat image were used. |
Instrumentation:
|
Instrument:
Description:
|
Instrument: Idrisi
|
Vendor: Clark Labs
|
|
Citation:
|
Eastman, J
.
(2006):
IDRISI Andes guide to GIS and image processing
. Available online
(http://tropicalmountainforest.org/publications.do?citid=1037) from DFG-FOR816dw.
|
|
--- Step
4
---
|
Title
:
|
Choice of training sites |
Description
:
|
Training sites of LUC were chosen partly by visual interpretation, partly from expert knowledge, described in Göttlicher (2009). |
Instrumentation:
|
Instrument:
Description:
|
Instrument: Idrisi
|
Vendor: Clark Labs
|
|
Citation:
|
Göttlicher, D
.
,
Obregón, A
.
,
Homeier, J
.
,
Rollenbeck, R
.
,
Nauss, T
.
,
and
Bendix, J
.
(2009):
Land-cover classification in the Andes of southern Ecuador using Landsat ETM+ data as a basis for SVAT modelling
. Available online
(http://tropicalmountainforest.org/publications.do?citid=449) from DFG-FOR816dw.
|
|
--- Step
5
---
|
Title
:
|
Image classification |
Description
:
|
Spectral signatures for the LUC classes Forest, Paramo, Pasture, Urban and Water were developed (Eastman 2006). A maxlike classifier was then used for supervised image classification (Eastman 2006). In order to flatten the results, a 3x3 mode filter was applied to the image. |
Instrumentation:
|
Instrument:
Description:
|
Instrument: Idrisi
|
Vendor: Clark Labs
|
|
Citation:
|
Eastman, J
.
(2006):
IDRISI Andes guide to GIS and image processing
. Available online
(http://tropicalmountainforest.org/publications.do?citid=1037) from DFG-FOR816dw.
|
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|
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