A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau
Introduction: Landslides are known to be one of the most frequent types of geological disasters. However, there is not an established method for large-scale, rapid, and high-precision landslide extraction. The quantitative impact of environmental changes on landslide development is also not well und...
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ftdoajarticles:oai:doaj.org/article:92f9191820b3426ca97a932e3a7c3ac0 2024-09-15T17:48:09+00:00 A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau Wentao Xu Qinjun Wang Jingyi Yang Boqi Yuan Chaokang He 2024-05-01T00:00:00Z https://doi.org/10.3389/feart.2024.1403888 https://doaj.org/article/92f9191820b3426ca97a932e3a7c3ac0 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2024.1403888/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2024.1403888 https://doaj.org/article/92f9191820b3426ca97a932e3a7c3ac0 Frontiers in Earth Science, Vol 12 (2024) landslide extraction environmental factors southern Tibetan plateau (TP) Google Earth Engine (GEE) remote sensing Science Q article 2024 ftdoajarticles https://doi.org/10.3389/feart.2024.1403888 2024-08-05T17:49:21Z Introduction: Landslides are known to be one of the most frequent types of geological disasters. However, there is not an established method for large-scale, rapid, and high-precision landslide extraction. The quantitative impact of environmental changes on landslide development is also not well understood, which hinders accurate assessments and decision-making in environmental and disaster response. The polar regions, including the Antarctic, the Arctic, and the Tibetan plateau (TP), sensitive to global environmental changes, are significantly affected by global warming. This leads to extensive landslide development, particularly in the southern TP. This research focuses on new landslides in the southern TP, exploring extraction methods and the relationship between landslides and environmental factors.Methods: Utilizing the Google Earth Engine (GEE) and an improved Otsu threshold segmentation algorithm, we processed remote sensing images with 10 m resolution to identify landslide areas. The proposed Normalized Landslide Bare-soil Separation Index (NDLBSI) achieved an 87% pre-extraction accuracy in extracting landslides from Sentinel-2 images from 2019 to 2023. For the pre-extraction results, manual interpretation and correction were carried out, and a model correlating annual landslide changes with environmental factors was established based on least squares multivariate statistical methods.Results: Results show that a significant increase in landslide areas in the southern TP over the past 5 years, correlating with the watershed-wide increase in annual average temperature and vegetation cover, along with a decrease in snow cover area.Discussion: These changes could affect soil and rock moisture, influencing soil stability and landslide occurrence. The study provides valuable insights for large-scale landslide detection and understanding the environmental factors influencing landslides, which is of some significance for landslide hazards early warning. Article in Journal/Newspaper Antarc* Antarctic Global warming Directory of Open Access Journals: DOAJ Articles Frontiers in Earth Science 12 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
landslide extraction environmental factors southern Tibetan plateau (TP) Google Earth Engine (GEE) remote sensing Science Q |
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landslide extraction environmental factors southern Tibetan plateau (TP) Google Earth Engine (GEE) remote sensing Science Q Wentao Xu Qinjun Wang Jingyi Yang Boqi Yuan Chaokang He A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau |
topic_facet |
landslide extraction environmental factors southern Tibetan plateau (TP) Google Earth Engine (GEE) remote sensing Science Q |
description |
Introduction: Landslides are known to be one of the most frequent types of geological disasters. However, there is not an established method for large-scale, rapid, and high-precision landslide extraction. The quantitative impact of environmental changes on landslide development is also not well understood, which hinders accurate assessments and decision-making in environmental and disaster response. The polar regions, including the Antarctic, the Arctic, and the Tibetan plateau (TP), sensitive to global environmental changes, are significantly affected by global warming. This leads to extensive landslide development, particularly in the southern TP. This research focuses on new landslides in the southern TP, exploring extraction methods and the relationship between landslides and environmental factors.Methods: Utilizing the Google Earth Engine (GEE) and an improved Otsu threshold segmentation algorithm, we processed remote sensing images with 10 m resolution to identify landslide areas. The proposed Normalized Landslide Bare-soil Separation Index (NDLBSI) achieved an 87% pre-extraction accuracy in extracting landslides from Sentinel-2 images from 2019 to 2023. For the pre-extraction results, manual interpretation and correction were carried out, and a model correlating annual landslide changes with environmental factors was established based on least squares multivariate statistical methods.Results: Results show that a significant increase in landslide areas in the southern TP over the past 5 years, correlating with the watershed-wide increase in annual average temperature and vegetation cover, along with a decrease in snow cover area.Discussion: These changes could affect soil and rock moisture, influencing soil stability and landslide occurrence. The study provides valuable insights for large-scale landslide detection and understanding the environmental factors influencing landslides, which is of some significance for landslide hazards early warning. |
format |
Article in Journal/Newspaper |
author |
Wentao Xu Qinjun Wang Jingyi Yang Boqi Yuan Chaokang He |
author_facet |
Wentao Xu Qinjun Wang Jingyi Yang Boqi Yuan Chaokang He |
author_sort |
Wentao Xu |
title |
A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau |
title_short |
A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau |
title_full |
A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau |
title_fullStr |
A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau |
title_full_unstemmed |
A research on the relationship between landslide area changes and environmental factors in the southern Tibetan plateau |
title_sort |
research on the relationship between landslide area changes and environmental factors in the southern tibetan plateau |
publisher |
Frontiers Media S.A. |
publishDate |
2024 |
url |
https://doi.org/10.3389/feart.2024.1403888 https://doaj.org/article/92f9191820b3426ca97a932e3a7c3ac0 |
genre |
Antarc* Antarctic Global warming |
genre_facet |
Antarc* Antarctic Global warming |
op_source |
Frontiers in Earth Science, Vol 12 (2024) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2024.1403888/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2024.1403888 https://doaj.org/article/92f9191820b3426ca97a932e3a7c3ac0 |
op_doi |
https://doi.org/10.3389/feart.2024.1403888 |
container_title |
Frontiers in Earth Science |
container_volume |
12 |
_version_ |
1810289295564472320 |