Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data
Abstract Soil moisture has a pronounced effect on earth surface processes. Global soil moisture is strongly driven by climate, whereas at finer scales, the role of non‐climatic drivers becomes more important. We provide insights into the significance of soil and land surface properties in landscape‐...
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crwiley:10.1002/esp.4301 2024-09-30T14:45:27+00:00 Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data Kemppinen, Julia Niittynen, Pekka Riihimäki, Henri Luoto, Miska Koneen Säätiö Academy of Finland Helsingin Yliopisto 2017 http://dx.doi.org/10.1002/esp.4301 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.4301 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.4301 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Earth Surface Processes and Landforms volume 43, issue 5, page 1019-1031 ISSN 0197-9337 1096-9837 journal-article 2017 crwiley https://doi.org/10.1002/esp.4301 2024-09-11T04:15:18Z Abstract Soil moisture has a pronounced effect on earth surface processes. Global soil moisture is strongly driven by climate, whereas at finer scales, the role of non‐climatic drivers becomes more important. We provide insights into the significance of soil and land surface properties in landscape‐scale soil moisture variation by utilizing high‐resolution light detection and ranging (LiDAR) data and extensive field investigations. The data consist of 1200 study plots located in a high‐latitude landscape of mountain tundra in north‐western Finland. We measured the plots three times during growing season 2016 with a hand‐held time‐domain reflectometry sensor. To model soil moisture and its temporal variation, we used four statistical modelling methods: generalized linear models, generalized additive models, boosted regression trees, and random forests. The model fit of the soil moisture models were R 2 = 0.60 and root mean square error (RMSE) 8.04 VWC% on average, while the temporal variation models showed a lower fit of R 2 = 0.25 and RMSE 13.11 CV%. The predictive performances for the former were R 2 = 0.47 and RMSE 9.34 VWC%, and for the latter R 2 = 0.01 and RMSE 15.29 CV%. Results were similar across the modelling methods, demonstrating a consistent pattern. Soil moisture and its temporal variation showed strong heterogeneity over short distances; therefore, soil moisture modelling benefits from high‐resolution predictors, such as LiDAR based variables. In the soil moisture models, the strongest predictor was SAGA (System for Automated Geoscientific Analyses) wetness index (SWI), based on a 1 m 2 digital terrain model derived from LiDAR data, which outperformed soil predictors. Thus, our study supports the use of LiDAR based SWI in explaining fine‐scale soil moisture variation. In the temporal variation models, the strongest predictor was the field‐quantified organic layer depth variable. Our results show that spatial soil moisture predictions can be based on soil and land surface properties, yet the ... Article in Journal/Newspaper Tundra Wiley Online Library Earth Surface Processes and Landforms 43 5 1019 1031 |
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Open Polar |
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Wiley Online Library |
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English |
description |
Abstract Soil moisture has a pronounced effect on earth surface processes. Global soil moisture is strongly driven by climate, whereas at finer scales, the role of non‐climatic drivers becomes more important. We provide insights into the significance of soil and land surface properties in landscape‐scale soil moisture variation by utilizing high‐resolution light detection and ranging (LiDAR) data and extensive field investigations. The data consist of 1200 study plots located in a high‐latitude landscape of mountain tundra in north‐western Finland. We measured the plots three times during growing season 2016 with a hand‐held time‐domain reflectometry sensor. To model soil moisture and its temporal variation, we used four statistical modelling methods: generalized linear models, generalized additive models, boosted regression trees, and random forests. The model fit of the soil moisture models were R 2 = 0.60 and root mean square error (RMSE) 8.04 VWC% on average, while the temporal variation models showed a lower fit of R 2 = 0.25 and RMSE 13.11 CV%. The predictive performances for the former were R 2 = 0.47 and RMSE 9.34 VWC%, and for the latter R 2 = 0.01 and RMSE 15.29 CV%. Results were similar across the modelling methods, demonstrating a consistent pattern. Soil moisture and its temporal variation showed strong heterogeneity over short distances; therefore, soil moisture modelling benefits from high‐resolution predictors, such as LiDAR based variables. In the soil moisture models, the strongest predictor was SAGA (System for Automated Geoscientific Analyses) wetness index (SWI), based on a 1 m 2 digital terrain model derived from LiDAR data, which outperformed soil predictors. Thus, our study supports the use of LiDAR based SWI in explaining fine‐scale soil moisture variation. In the temporal variation models, the strongest predictor was the field‐quantified organic layer depth variable. Our results show that spatial soil moisture predictions can be based on soil and land surface properties, yet the ... |
author2 |
Koneen Säätiö Academy of Finland Helsingin Yliopisto |
format |
Article in Journal/Newspaper |
author |
Kemppinen, Julia Niittynen, Pekka Riihimäki, Henri Luoto, Miska |
spellingShingle |
Kemppinen, Julia Niittynen, Pekka Riihimäki, Henri Luoto, Miska Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data |
author_facet |
Kemppinen, Julia Niittynen, Pekka Riihimäki, Henri Luoto, Miska |
author_sort |
Kemppinen, Julia |
title |
Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data |
title_short |
Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data |
title_full |
Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data |
title_fullStr |
Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data |
title_full_unstemmed |
Modelling soil moisture in a high‐latitude landscape using LiDAR and soil data |
title_sort |
modelling soil moisture in a high‐latitude landscape using lidar and soil data |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/esp.4301 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.4301 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.4301 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Earth Surface Processes and Landforms volume 43, issue 5, page 1019-1031 ISSN 0197-9337 1096-9837 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/esp.4301 |
container_title |
Earth Surface Processes and Landforms |
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43 |
container_issue |
5 |
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1019 |
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1031 |
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1811646102825336832 |