Detecting northern peatland vegetation patterns at ultra‐high spatial resolution
Within northern peatlands, landscape elements such as vegetation and topography are spatially heterogenic from ultra‐high (centimeter level) to coarse scale. In addition to within‐site spatial heterogeneity, there is evident between‐site heterogeneity, but there is a lack of studies assessing whethe...
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ftluke:oai:jukuri.luke.fi:10024/545207 2023-10-09T21:54:26+02:00 Detecting northern peatland vegetation patterns at ultra‐high spatial resolution Räsänen, Aleksi Aurela, Mika Juutinen, Sari Kumpula, Timo Lohila, Annalea Penttilä, Timo Virtanen, Tarmo orcid:0000-0002-0710-4131 4100110510 Luonnonvarakeskus 457–471 true http://jukuri.luke.fi/handle/10024/545207 en eng Wiley Remote Sensing in Ecology and Conservation 10.1002/rse2.140 2056-3485 4 6 rse2.140 http://jukuri.luke.fi/handle/10024/545207 URN:NBN:fi-fe2019121848809 CC BY-NC 4.0 unmanned aerial vehicles floristic analysis lidar northern boreal very-high spatial resolution publication fi=A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä|sv=A1 Originalartikel i en vetenskaplig tidskrift|en=A1 Journal article (refereed), original research| fi=Publisher's version|sv=Publisher's version|en=Publisher's version| ftluke 2023-09-12T20:27:25Z Within northern peatlands, landscape elements such as vegetation and topography are spatially heterogenic from ultra‐high (centimeter level) to coarse scale. In addition to within‐site spatial heterogeneity, there is evident between‐site heterogeneity, but there is a lack of studies assessing whether different combinations of remotely sensed features and mapping approaches are needed in different types of landscapes. We evaluated the value of different mapping methods and remote sensing datasets and analyzed the kinds of differences present in vegetation patterns and their mappability between three northern boreal peatland landscapes in northern Finland. We utilized field‐inventoried vegetation plots together with spectral, textural, topography and vegetation height remote sensing data from 0.02‐ to 3‐m pixel size. Remote sensing data included true‐color unmanned aerial vehicle images, aerial images with four spectral bands, aerial lidar data and multiple PlanetScope satellite images. We used random forest regressions for tracking plant functional type (PFT) coverage, non‐metric multidimensional scaling ordination axes and fuzzy k‐medoid plant community clusters. PFT regressions had variable performance for different study sites (R2 −0.03 to 0.69). Spatial patterns of some spectrally or structurally distinctive PFTs could be predicted relatively well. The first ordination axis represented wetness gradient and was well predicted using remotely sensed data (R2 0.64 to 0.82), but the other three axes had a less straightforward explanation and lower mapping performance (R2 −0.09 to 0.53). Plant community clusters were predicted most accurately in the sites with clear string‐flark topography but less accurately in the flatter site (R2 0.16–0.82). The most important remote sensing features differed between dependent variables and study sites: different topographic, spectral and textural features; and coarse‐scale and fine‐scale datasets were the most important in different tasks. We suggest that multiple different ... Article in Journal/Newspaper Northern Finland Natural Resources Institute Finland: Jukuri |
institution |
Open Polar |
collection |
Natural Resources Institute Finland: Jukuri |
op_collection_id |
ftluke |
language |
English |
topic |
unmanned aerial vehicles floristic analysis lidar northern boreal very-high spatial resolution |
spellingShingle |
unmanned aerial vehicles floristic analysis lidar northern boreal very-high spatial resolution Räsänen, Aleksi Aurela, Mika Juutinen, Sari Kumpula, Timo Lohila, Annalea Penttilä, Timo Virtanen, Tarmo Detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
topic_facet |
unmanned aerial vehicles floristic analysis lidar northern boreal very-high spatial resolution |
description |
Within northern peatlands, landscape elements such as vegetation and topography are spatially heterogenic from ultra‐high (centimeter level) to coarse scale. In addition to within‐site spatial heterogeneity, there is evident between‐site heterogeneity, but there is a lack of studies assessing whether different combinations of remotely sensed features and mapping approaches are needed in different types of landscapes. We evaluated the value of different mapping methods and remote sensing datasets and analyzed the kinds of differences present in vegetation patterns and their mappability between three northern boreal peatland landscapes in northern Finland. We utilized field‐inventoried vegetation plots together with spectral, textural, topography and vegetation height remote sensing data from 0.02‐ to 3‐m pixel size. Remote sensing data included true‐color unmanned aerial vehicle images, aerial images with four spectral bands, aerial lidar data and multiple PlanetScope satellite images. We used random forest regressions for tracking plant functional type (PFT) coverage, non‐metric multidimensional scaling ordination axes and fuzzy k‐medoid plant community clusters. PFT regressions had variable performance for different study sites (R2 −0.03 to 0.69). Spatial patterns of some spectrally or structurally distinctive PFTs could be predicted relatively well. The first ordination axis represented wetness gradient and was well predicted using remotely sensed data (R2 0.64 to 0.82), but the other three axes had a less straightforward explanation and lower mapping performance (R2 −0.09 to 0.53). Plant community clusters were predicted most accurately in the sites with clear string‐flark topography but less accurately in the flatter site (R2 0.16–0.82). The most important remote sensing features differed between dependent variables and study sites: different topographic, spectral and textural features; and coarse‐scale and fine‐scale datasets were the most important in different tasks. We suggest that multiple different ... |
author2 |
orcid:0000-0002-0710-4131 4100110510 Luonnonvarakeskus |
format |
Article in Journal/Newspaper |
author |
Räsänen, Aleksi Aurela, Mika Juutinen, Sari Kumpula, Timo Lohila, Annalea Penttilä, Timo Virtanen, Tarmo |
author_facet |
Räsänen, Aleksi Aurela, Mika Juutinen, Sari Kumpula, Timo Lohila, Annalea Penttilä, Timo Virtanen, Tarmo |
author_sort |
Räsänen, Aleksi |
title |
Detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
title_short |
Detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
title_full |
Detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
title_fullStr |
Detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
title_full_unstemmed |
Detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
title_sort |
detecting northern peatland vegetation patterns at ultra‐high spatial resolution |
publisher |
Wiley |
url |
http://jukuri.luke.fi/handle/10024/545207 |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_relation |
Remote Sensing in Ecology and Conservation 10.1002/rse2.140 2056-3485 4 6 rse2.140 http://jukuri.luke.fi/handle/10024/545207 URN:NBN:fi-fe2019121848809 |
op_rights |
CC BY-NC 4.0 |
_version_ |
1779318003509231616 |