GSTDTAP  > 资源环境科学
DOI10.1029/2019WR025233
Deforestation Effects on Rainfall-Induced Shallow Landslides: Remote Sensing and Physically-Based Modelling
Lehmann, Peter; von Ruette, Jonas; Or, Dani
2019-11-29
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2019
文章类型Article;Early Access
语种英语
国家Switzerland
英文摘要

Deforestation of steep slopes may temporarily reduce evapotranspiration and lessen root reinforcement thus potentially enhancing landslide susceptibility. Quantifying the effects of deforestation and associated perturbations on landslide characteristics remains a challenge, especially for predictions in remote areas with limited information. We applied the STEP-TRAMM model that uses publicly available climatic and landscape information to assess effects of forest alteration on hydro-mechanical processes. The model considers two types of forest alterations: (i) removal of root reinforcement following permanent forest conversion, and (ii) time dependent root decay and regrowth following clear-cut timber harvesting. The model was applied to four study areas in different climatic regions (New Zealand, Oregon, Sumatra and Cambodia). We compared model predictions of landslide metrics with satellite-imaging of landslides following deforestation. Although we observe a higher propensity and larger landslides in deforested areas, effects were sensitive to deforestation practices and patterns. The largest increase in landslide area was associated with large and interconnected deforested tracts within a few years after deforestation as determined by competition between root decay and forest regrowth. For patchy small-scale forest conversion, the landslide areas were smaller but could occur many years after deforestation (> 10 years). The modeling framework offers ability to evaluate forest alteration scenarios through their potential impact on landslide hazard in specific regions of the landscape.


英文关键词Landslide Remote Sensing Modeling Rainfall
领域资源环境
收录类别SCI-E
WOS记录号WOS:000499316000001
WOS关键词ROOT REINFORCEMENT ; FOREST MANAGEMENT ; DEBRIS FLOWS ; FREQUENCY ; STRENGTH ; COHESION ; ISLAND
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/223939
专题资源环境科学
作者单位ETH, Soil & Terr Environm Phys, Zurich, Switzerland
推荐引用方式
GB/T 7714
Lehmann, Peter,von Ruette, Jonas,Or, Dani. Deforestation Effects on Rainfall-Induced Shallow Landslides: Remote Sensing and Physically-Based Modelling[J]. WATER RESOURCES RESEARCH,2019.
APA Lehmann, Peter,von Ruette, Jonas,&Or, Dani.(2019).Deforestation Effects on Rainfall-Induced Shallow Landslides: Remote Sensing and Physically-Based Modelling.WATER RESOURCES RESEARCH.
MLA Lehmann, Peter,et al."Deforestation Effects on Rainfall-Induced Shallow Landslides: Remote Sensing and Physically-Based Modelling".WATER RESOURCES RESEARCH (2019).
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