Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion
Freeze‒thaw induced landslides (FTILs) in grasslands on the Tibetan Plateau are a geological disaster leading to soil erosion. These landslides reduce biodiversity and intensify landscape fragmentation, which in turn are strengthen by the persistent climate change and increased anthropogenic activit...
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KeAi Communications Co., Ltd.
2024
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Online Access: | https://doi.org/10.1016/j.accre.2024.03.002 https://doaj.org/article/e592124de58a47abb9e5074a6a2836a6 |
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ftdoajarticles:oai:doaj.org/article:e592124de58a47abb9e5074a6a2836a6 2024-09-15T18:30:14+00:00 Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion Jia-Hui Yang Yan-Chen Gao Lang Jia Wen-Juan Wang Qing-Bai Wu Francis Zvomuya Miles Dyck Hai-Long He 2024-06-01T00:00:00Z https://doi.org/10.1016/j.accre.2024.03.002 https://doaj.org/article/e592124de58a47abb9e5074a6a2836a6 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927824000315 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2024.03.002 https://doaj.org/article/e592124de58a47abb9e5074a6a2836a6 Advances in Climate Change Research, Vol 15, Iss 3, Pp 476-489 (2024) Permafrost degradation Random forest Thaw slump Spatial distribution Tibetan Plateau Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2024 ftdoajarticles https://doi.org/10.1016/j.accre.2024.03.002 2024-08-05T17:48:59Z Freeze‒thaw induced landslides (FTILs) in grasslands on the Tibetan Plateau are a geological disaster leading to soil erosion. These landslides reduce biodiversity and intensify landscape fragmentation, which in turn are strengthen by the persistent climate change and increased anthropogenic activities. However, conventional techniques for mapping FTILs on a regional scale are impractical due to their labor-intensive, costly, and time-consuming nature. This study focuses on improving FTILs detection by implementing image fusion-based Google Earth Engine (GEE) and a random forest algorithm. Integration of multiple data sources, including texture features, index features, spectral features, slope, and vertical‒vertical polarization data, allow automatic detection of the spatial distribution characteristics of FTILs in Zhidoi county, which is located within the Qinghai‒Tibet Engineering Corridor (QTEC). We employed statistical techniques to elucidate the mechanisms influencing FTILs occurrence. The enhanced method identifies two schemes that achieve high accuracy using a smaller training sample (scheme A: 94.1%; scheme D: 94.5%) compared to other methods (scheme B: 50.0%; scheme C: 95.8%). This methodology is effective in generating accurate results using only ∼10% of the training sample size necessitated by other methods. The spatial distribution patterns of FTILs generated for 2021 are similar to those obtained using various other training sample sources, with a primary concentration observed along the central region traversed by the QTEC. The results highlight the slope as the most crucial feature in the fusion images, accounting for 93% of FTILs occurring on gentle slopes ranging from 0° to 14°. This study provides a theoretical framework and technological reference for the identification, monitoring, prevention and control of FTILs in grasslands. Such developments hold the potential to benefit the management of grassland ecosystem, reduce economic losses, and promote grassland sustainability. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Advances in Climate Change Research 15 3 476 489 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Permafrost degradation Random forest Thaw slump Spatial distribution Tibetan Plateau Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Permafrost degradation Random forest Thaw slump Spatial distribution Tibetan Plateau Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Jia-Hui Yang Yan-Chen Gao Lang Jia Wen-Juan Wang Qing-Bai Wu Francis Zvomuya Miles Dyck Hai-Long He Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion |
topic_facet |
Permafrost degradation Random forest Thaw slump Spatial distribution Tibetan Plateau Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
Freeze‒thaw induced landslides (FTILs) in grasslands on the Tibetan Plateau are a geological disaster leading to soil erosion. These landslides reduce biodiversity and intensify landscape fragmentation, which in turn are strengthen by the persistent climate change and increased anthropogenic activities. However, conventional techniques for mapping FTILs on a regional scale are impractical due to their labor-intensive, costly, and time-consuming nature. This study focuses on improving FTILs detection by implementing image fusion-based Google Earth Engine (GEE) and a random forest algorithm. Integration of multiple data sources, including texture features, index features, spectral features, slope, and vertical‒vertical polarization data, allow automatic detection of the spatial distribution characteristics of FTILs in Zhidoi county, which is located within the Qinghai‒Tibet Engineering Corridor (QTEC). We employed statistical techniques to elucidate the mechanisms influencing FTILs occurrence. The enhanced method identifies two schemes that achieve high accuracy using a smaller training sample (scheme A: 94.1%; scheme D: 94.5%) compared to other methods (scheme B: 50.0%; scheme C: 95.8%). This methodology is effective in generating accurate results using only ∼10% of the training sample size necessitated by other methods. The spatial distribution patterns of FTILs generated for 2021 are similar to those obtained using various other training sample sources, with a primary concentration observed along the central region traversed by the QTEC. The results highlight the slope as the most crucial feature in the fusion images, accounting for 93% of FTILs occurring on gentle slopes ranging from 0° to 14°. This study provides a theoretical framework and technological reference for the identification, monitoring, prevention and control of FTILs in grasslands. Such developments hold the potential to benefit the management of grassland ecosystem, reduce economic losses, and promote grassland sustainability. |
format |
Article in Journal/Newspaper |
author |
Jia-Hui Yang Yan-Chen Gao Lang Jia Wen-Juan Wang Qing-Bai Wu Francis Zvomuya Miles Dyck Hai-Long He |
author_facet |
Jia-Hui Yang Yan-Chen Gao Lang Jia Wen-Juan Wang Qing-Bai Wu Francis Zvomuya Miles Dyck Hai-Long He |
author_sort |
Jia-Hui Yang |
title |
Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion |
title_short |
Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion |
title_full |
Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion |
title_fullStr |
Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion |
title_full_unstemmed |
Enhanced detection of freeze‒thaw induced landslides in Zhidoi county (Tibetan Plateau, China) with Google Earth Engine and image fusion |
title_sort |
enhanced detection of freeze‒thaw induced landslides in zhidoi county (tibetan plateau, china) with google earth engine and image fusion |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2024 |
url |
https://doi.org/10.1016/j.accre.2024.03.002 https://doaj.org/article/e592124de58a47abb9e5074a6a2836a6 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Advances in Climate Change Research, Vol 15, Iss 3, Pp 476-489 (2024) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927824000315 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2024.03.002 https://doaj.org/article/e592124de58a47abb9e5074a6a2836a6 |
op_doi |
https://doi.org/10.1016/j.accre.2024.03.002 |
container_title |
Advances in Climate Change Research |
container_volume |
15 |
container_issue |
3 |
container_start_page |
476 |
op_container_end_page |
489 |
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1810471695305146368 |