Geometric approaches to computing 3D-landscape metrics
The relationships between patterns and processes lie at the core of modern landscape ecology. These dependences can be quantified by using indices related to the patch-corridor-matrix model. This model conceptualizes landscapes as planar mosaics consisting of discrete patches. On the other hand, rel...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
International Association for Landscape Ecology, Chapter Germany
2010-10-01
|
Series: | Landscape Online |
Subjects: | |
Online Access: | https://www.landscape-online.org/index.php/lo/article/view/61 |
id |
doaj-6f445a8a027c4de39fb0f7c143ca3f28 |
---|---|
record_format |
Article |
spelling |
doaj-6f445a8a027c4de39fb0f7c143ca3f282020-11-25T01:52:31ZengInternational Association for Landscape Ecology, Chapter GermanyLandscape Online1865-15422010-10-012411210.3097/LO.20102461Geometric approaches to computing 3D-landscape metricsMihai Sorin Stupariu0Ileana Georgeta Pàtru-Stupariu1Roxana Cuculici2University of Bucharest, Faculty of Mathematics and Computer Science, Str. Academiei 14, 010014-Bucharest, RomaniaUniversity of Bucharest, Faculty of Geography, Bd. N. Balcescu 1, 010041-Bucharest, RomaniaUniversity of Bucharest, Faculty of Geography, Bd. N. Balcescu 1, 010041-Bucharest, RomaniaThe relationships between patterns and processes lie at the core of modern landscape ecology. These dependences can be quantified by using indices related to the patch-corridor-matrix model. This model conceptualizes landscapes as planar mosaics consisting of discrete patches. On the other hand, relief variability is a key factor for many ecological processes, and therefore these processes can be better modeled by integrating information concerning the third dimension of landscapes. This can be done by generating a triangle mesh which approximates the original terrain. The aim of this methodological paper is to introduce two new constructions of triangulations which replace a digital elevation model. These approximation methods are compared with the method which was already used in the computation of 3D-landscape metrics (firstly for parameterized surfaces and secondly for two landscape mosaics). The statistical analysis shows that all three methods are of almost equal sensitivity in reflecting the relationship between terrain ruggedness and the patches areas and perimeters. In particular, either of the methods can be used for approximating the real values of these basic metrics. However, the two methods introduced in this paper have the advantage of yielding continuous approximations of the terrain, and this fact could be useful for further developments.https://www.landscape-online.org/index.php/lo/article/view/613D-analysisLandscape metricsPatch-corridor-matrix modelReliefTriangulation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mihai Sorin Stupariu Ileana Georgeta Pàtru-Stupariu Roxana Cuculici |
spellingShingle |
Mihai Sorin Stupariu Ileana Georgeta Pàtru-Stupariu Roxana Cuculici Geometric approaches to computing 3D-landscape metrics Landscape Online 3D-analysis Landscape metrics Patch-corridor-matrix model Relief Triangulation |
author_facet |
Mihai Sorin Stupariu Ileana Georgeta Pàtru-Stupariu Roxana Cuculici |
author_sort |
Mihai Sorin Stupariu |
title |
Geometric approaches to computing 3D-landscape metrics |
title_short |
Geometric approaches to computing 3D-landscape metrics |
title_full |
Geometric approaches to computing 3D-landscape metrics |
title_fullStr |
Geometric approaches to computing 3D-landscape metrics |
title_full_unstemmed |
Geometric approaches to computing 3D-landscape metrics |
title_sort |
geometric approaches to computing 3d-landscape metrics |
publisher |
International Association for Landscape Ecology, Chapter Germany |
series |
Landscape Online |
issn |
1865-1542 |
publishDate |
2010-10-01 |
description |
The relationships between patterns and processes lie at the core of modern landscape ecology. These dependences can be quantified by using indices related to the patch-corridor-matrix model. This model conceptualizes landscapes as planar mosaics consisting of discrete patches. On the other hand, relief variability is a key factor for many ecological processes, and therefore these processes can be better modeled by integrating information concerning the third dimension of landscapes. This can be done by generating a triangle mesh which approximates the original terrain. The aim of this methodological paper is to introduce two new constructions of triangulations which replace a digital elevation model. These approximation methods are compared with the method which was already used in the computation of 3D-landscape metrics (firstly for parameterized surfaces and secondly for two landscape mosaics). The statistical analysis shows that all three methods are of almost equal sensitivity in reflecting the relationship between terrain ruggedness and the patches areas and perimeters. In particular, either of the methods can be used for approximating the real values of these basic metrics. However, the two methods introduced in this paper have the advantage of yielding continuous approximations of the terrain, and this fact could be useful for further developments. |
topic |
3D-analysis Landscape metrics Patch-corridor-matrix model Relief Triangulation |
url |
https://www.landscape-online.org/index.php/lo/article/view/61 |
work_keys_str_mv |
AT mihaisorinstupariu geometricapproachestocomputing3dlandscapemetrics AT ileanageorgetapatrustupariu geometricapproachestocomputing3dlandscapemetrics AT roxanacuculici geometricapproachestocomputing3dlandscapemetrics |
_version_ |
1724994761335504896 |