Kim, John H; Fourcaud, Thierry; Jourdan, Christophe; Maeght, Jean-Luc; Mao, Zhun; Metayer, James; Meylan, Louise; Pierret, Alain; Rapidel, Bruno; Roupsard, Olivier; de Rouw, Anneke; Sanchez, Mario Villatoro; Wang, Yan; Stokes, Alexia (2016): Hydric, root and soil cohesions and cohesion from biomass, water and soil loading under various land uses in Laos, Costa Rica and France hillslopes between 2012 and 2015 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.868491, Supplement to: Kim, JH et al. (2017): Vegetation as a driver of temporal variations in slope stability: The impact of hydrological processes. Geophysical Research Letters, 44(10), 4897-4907, https://doi.org/10.1002/2017GL073174
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Abstract:
Although vegetation is increasingly used to mitigate landslide risks, how vegetation affects the temporal variability of slope stability is poorly understood, especially in earthquake-prone regions. We combined 3-year long soil moisture monitoring, measurements of soil physical properties and plant functional traits, and numerical modeling to compare slope stability under paired land uses with and without trees in tropical, sub-tropical, and temperate landslide- and earthquake-prone regions. Trees improved stability for 5-12 months per year from drawdown of soil moisture and resulted in less interannual variability in the duration of high-stability periods compared to slopes without trees. Our meta-analysis of published data also showed that slopes with woody vegetation were more stable and less sensitive to climate and soil factors than slopes with herbaceous vegetation. However, estimates of earthquake magnitude necessary to destabilize slopes at our sites suggest that large additional stabilization from trees is necessary for meaningful protection against external triggers.
Coverage:
Median Latitude: 24.880167 * Median Longitude: 7.979696 * South-bound Latitude: 9.670427 * West-bound Longitude: -84.095326 * North-bound Latitude: 45.117297 * East-bound Longitude: 102.179167
Date/Time Start: 2012-01-01T00:00:00 * Date/Time End: 2014-12-31T00:00:00
Minimum DEPTH, soil: 1.2 m * Maximum DEPTH, soil: 1.8 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kim, John H | |||
| 2 | Vegetation type | Vegetation type | Kim, John H | |||
| 3 | DATE/TIME | Date/Time | Kim, John H | Geocode | ||
| 4 | DEPTH, soil | Depth soil | m | Kim, John H | Geocode | |
| 5 | Load | PO | kPa | Kim, John H | Soil_Normal = Normal load from the soil weight on the hypothetical shearing surface | |
| 6 | Load | PO | kPa | Kim, John H | Water_Normal = Normal load from the soil water weight on the hypothetical shearing surface | |
| 7 | Load | PO | kPa | Kim, John H | Biomass_Normal = Normal load from the soil vegetation biomass weight on the hypothetical shearing surface | |
| 8 | Cohesion | C | kPa | Kim, John H | Soil_Cohesion = Soil cohesion | |
| 9 | Cohesion | C | kPa | Kim, John H | Root_Cohesion = Root mechanical cohesion | |
| 10 | Cohesion | C | kPa | Kim, John H | Hydric_Cohesion = Cohesion from suction | |
| 11 | Force | F | kPa | Kim, John H | Resisting_F = Resisting force | |
| 12 | Force | F | kPa | Kim, John H | Driving_F = Driving force | |
| 13 | Factor of safety | FoS | Kim, John H |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
44315 data points
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