Slope stability and vegetation: Conceptual and numerical investigation of mechanical effects

Kokutse, Nomessi; Temgoua, André Guy Tranquille; Kavazović, Zanin

doi:10.1016/j.ecoleng.2015.11.005

Cited by 90 publications

(75 citation statements)

References 26 publications

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“…However, in our study, we have used only rainfall data owing to unavailability of snowmelt data. DeGraff (); Wu and Sidle (); Gaillard, Liamzon, and Villanueva (); and Kokutse, Temgoua, and Kavazović () also observed that lack of vegetation on hillslopes decreases the shear strength of slope material and thus promotes the landslides. Verma and Kapoor () found that the vegetation has shrunk in this region for the last decade due to expansion of human population, unscientific harvesting, tourism, and road construction.…”

Section: Discussionmentioning

confidence: 96%

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

2018

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Landslides have been considered widely as principal mass wasting agents in the valleys experiencing varied influence of tectonics and climate. However, pattern of landslides is rarely addressed in the literature that may act as a surface manifestation of interrelationship of tectonics, climate, and lithology. Here, we have attempted to understand such interrelationship in the context of landslide distribution pattern in the Satluj valley, Northwest Himalaya. Geomorphic indices such as steepness index, valley floor width to valley height ratio, and topographic swath profile were used for tectonic inference. Daily rainfall data of the year 2000-2016, using 5 rain-gauge stations and swath profile of Normalized Difference Vegetation Index, were used to deduce spatial variability of climate. Influence of lithological variability and regional faults; Sangla Detachment, Main Central Thrust, and Munsiari Thrust on the landslide distribution are also inferred. A total of 55 landslides (20 rock avalanche, 19 debris slides, and 16 rockfalls) are found to exist in 6 clusters along 130 km stretch of the Satluj valley. These landslides, covering a total area (A) and volume (V) of 1.05 × 10 7 m 2 and 4.4 × 10 7 m 3 , respectively, are also noted to follow a power law (R 2 = 0.8) and result in a scaling relationship of V = (0.180)A 1.208 .

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Section: Discussionmentioning

confidence: 96%

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

2018

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“…The aim of this part of the analysis was to determine the optimal location of the tree cover on the examined slope, which could potentially be used as a bioengineering treatment for improvement of the balance the analysed earthen structure (Kokutse et al 2016, Bischetti et al 2010.…”

Section: Methodsmentioning

confidence: 99%

Potential landslide hazard in a zone of stabilised earthen embankments illustrated by Wysoka Górka in Chełm

Demczuk

2018

pjss

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123Abstract. Plant cover is an important element in the management of earthen structures and slopes improving their aesthetic values and limiting their vulnerability to denudation processes. With regard to landslide hazards, an important aspect in the presence of plants is the effect of their root systems on the shear strength of the substrate and, consequently, on slope stability. The aim of the study was to determine the impact of the tree cover at the Wysoka Górka archaeological site on the stability of the earthen embankment on Góra Katedralna in Chełm (Lublin Province). These architectural elements originate from the times of Chełm's glory in the first half of the 13 th century, when it became the capital of Halych-Volhynia Duchy and a residence of Prince Danylo Romanovych (Isaiecić 1999).The research involved identification of the geological structure of the embankment (surveying, measurement of the filtration coefficient) and laboratory determination of the geotechnical parameters of the soil (particle size distribution and soil compressive strength measured in a triaxial compression apparatus). In the next stage of the study, stability was calculated with limit equilibrium methods in the GeoStudio program. Standard calculations of the embankment stabili-

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“…These statements are consistent with the different distribution pattern of andaliman in Samosir island caused by the social attraction which is economical value of andaliman is high, therefore farmers try to cultivate andaliman by moving the seedlings from its natural habitat to other places. Kokutse et al (2016) in their research states that slope will have cohesion of vegetation roots in different type of soil and young vegetation. Figure 2a shows the response of andaliman presence in the flat slopes (< 1%) until wavy slopes (8 -15%).…”

Section: Andaliman Distribution Patternmentioning

confidence: 99%

Spatial Distribution Of Andaliman Potential Habitat (Zanthoxylum acanthopodium DC.) in Samosir Island, North Sumatera

Siahaan¹,

Hilwan²,

Setiawan³

2019

JPSL

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Andaliman breeding and regeneration (Zanthoxylum acanthopodium DC.) in its natural habitat tends to be slow and difficult. The purpose of this research was to determine the distribution pattern, spatial character, and potential suitable habitat for andaliman growth with a suitability model approach in Samosir island, North Sumatera. Andaliman distribution pattern based on the calculation of the Standard Morisita Index (Ip) shows various patterns. There are three categories of distribution pattern, depends on the Standard Morisita Index The distribution patterns on each plot based on the calculation are: random (Location 1open area (Ip = 0.00)), uniform (Location 2plantation forest (Ip = -0.77); Location 3open field (Ip = -0.09)), and clump (Location 4plantation forest (Ip = 0.36)). Analysis of habitat suitability for andaliman used spatial modelling with the Principal Component Analysis (PCA) approach. This method utilized ecological variables, i.e.: Bare Soil Index (BSI), slope, Digital Elevation Model (DEM), rainfall, Normalized Difference Moisture Index (NDMI), and Normalized Difference Vegetation Index (NDVI). The result is 69.8% of Samosir Island is suitable for andaliman, while 26.4% of it is considered as highly suitable habitat. How to cite (CSE Style 8 th Edition):Siahaan L, Hilwan I, Setiawan Y. 2019. Spatial distribution of Andaliman potential habitat (Zanthoxylum Acanthopodium Dc.) in Samosir Island, North Sumatera. JPSL 9(4): 861-871. http://dx.

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Slope stability and vegetation: Conceptual and numerical investigation of mechanical effects

Cited by 90 publications

References 26 publications

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

Spatial interrelationship of landslides, litho‐tectonics, and climate regime, Satluj valley, Northwest Himalaya

Potential landslide hazard in a zone of stabilised earthen embankments illustrated by Wysoka Górka in Chełm

Spatial Distribution Of Andaliman Potential Habitat (Zanthoxylum acanthopodium DC.) in Samosir Island, North Sumatera

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