Comparing Potential Unstable Sites and Stable Sites on Revegetated Cut-Slopes of Mountainous Terrain in Korea

Kil, Sung–Ho; Lee, Dong Kun; Kim, Ho; Kim, Nam-Choon; Im, Sangjun; Park, Gwan Soo

doi:10.3390/su71115319

Cited by 8 publications

(4 citation statements)

References 40 publications

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“…Slope revegetation is essential for restoring the physical, landscape, and ecological functions of a barren site ( Kil et al, 2015 ). Thus, ideally, the focus ought to be on selecting the right plant mixture to be planted at the right density which will eventually create a sustainable and stable slope.…”

Section: Survey Methodologymentioning

confidence: 99%

Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview

Dorairaj

Osman

2021

PeerJ

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Population increase and the demand for infrastructure development such as construction of highways and road widening are intangible, leading up to mass land clearing. As flat terrains become scarce, infrastructure expansions have moved on to hilly terrains, cutting through slopes and forests. Unvegetated or bare slopes are prone to erosion due to the lack of or insufficient surface cover. The combination of exposed slope, uncontrolled slope management practices, poor slope planning and high rainfall as in Malaysia could steer towards slope failures which then results in landslides under acute situation. Moreover, due to the tropical weather, the soils undergo intense chemical weathering and leaching that elevates soil erosion and surface runoff. Mitigation measures are vital to address slope failures as they lead to economic loss and loss of lives. Since there is minimal or limited information and investigations on slope stabilization methods in Malaysia, this review deciphers into the current slope management practices such as geotextiles, brush layering, live poles, rock buttress and concrete structures. However, these methods have their drawbacks. Thus, as a way forward, we highlight the potential application of soil bioengineering methods especially on the use of whole plants. Here, we discuss the general attributions of a plant in slope stabilization including its mechanical, hydrological and hydraulic effects. Subsequently, we focus on species selection, and engineering properties of vegetation especially rooting structures and architecture. Finally, the review will dissect and assess the ecological principles for vegetation establishment with an emphasis on adopting the mix-culture approach as a slope failure mitigation measure. Nevertheless, the use of soil bioengineering is limited to low to moderate risk slopes only, while in high-risk slopes, the use of traditional engineering measure is deemed more appropriate and remain to be the solution for slope stabilization.

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Section: Survey Methodologymentioning

confidence: 99%

Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview

Dorairaj

Osman

2021

PeerJ

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“…However, the vegetation survival and growth rates in steep slopes are limited due to the unstable soil condition and soil run-off. (14)(15)(16)(17) For these reasons, several studies have been conducted to investigate efficient ways to monitor forest road displacement activity using field-based and remote sensing techniques.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Terrestrial Laser Scanning System for Detecting and Monitoring Surface Displacement of Artificial Slopes on Forest Roads

Kim¹,

Kim²,

Woo³

et al. 2022

Sensors and Materials

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The steep gradient of artificial slopes on forest roads reduces the natural survival rate of vegetation. Uncovered vegetation slopes are exposed, resulting in soil displacement including soil erosion and sedimentation. Therefore, it is necessary to establish an optimized slope management plan with high accuracy for quantifying or detecting the erosion and deposition of artificial slopes. In this context, we investigated the possibility of using a terrestrial laser scanning system (TLS) to estimate soil displacement activity on a cut slope on a forest road. The soil displacement was estimated using time series point cloud data captured by a TLS. The differences among the captured point cloud data were calculated using a digital evaluation model of difference methodology. To validate the performance of the TLS for soil displacement estimation, 10 soil displacement markers were installed in a cut slope. The study revealed that the TLS detected the differences in soil erosion and deposition activity on an area of a steep slope. The differences in soil erosion and the depth of soil sediment were estimated to be 1.36 and 0.3 cm, respectively. The results of this research indicate the feasibility of using a TLS to investigate the surface displacement on a slope area, despite the errors of the estimated erosion and deposition.

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“…Daily maximum precipitation had the highest weight among the variables; therefore, the distribution of the climate exposure map is strongly affected by the daily maximum precipitation. The northwestern and southeastern regions of the ROK showed high climate exposure (Kil et al 2015).…”

Section: Vulnerability Assessment For Representative Itemmentioning

confidence: 99%

Finding key vulnerable areas by a climate change vulnerability assessment

et al. 2016

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Extreme climate events such as typhoons, heat waves, and floods have increased in frequency with climate change. Many municipalities within the Republic of Korea (ROK) have experienced damage from these events, necessitating countermeasures. Vulnerability assessment has been suggested in the implementation of a national plan for reducing damage resulting from climate change. Thus, in this study, we assess the vulnerability of the ROK and identify key vulnerable municipalities in support of the national adaptation plan. We create a framework for assessing the vulnerability of all 232 municipalities of the ROK with respect to 32 items in 7 fields. The framework regards decision makers' comprehension and availability of data as important factors. We assess the vulnerability index of each municipality by using variables of climate exposure, sensitivity, and adaptation capacity. The weights of variables are determined by the Delphi method. We used the representative concentration pathways 8.5 climate scenario to reflect future climate exposure for the vulnerability assessment. From the analysis, vulnerability maps are prepared for the 32 items of 7 fields, and key vulnerable municipalities are identified by aggregating the maps. The distribution of vulnerable municipalities changes with the future climate conditions. These maps provide a scientific and objective basis for the ROK government to establish adaptation plans and allocate resources. The ROK government can utilize the results to identify the characteristics of highly vulnerable areas, and municipalities can use the results as a basis for requesting support from the national government.

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Comparing Potential Unstable Sites and Stable Sites on Revegetated Cut-Slopes of Mountainous Terrain in Korea

Cited by 8 publications

References 40 publications

Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview

Present practices and emerging opportunities in bioengineering for slope stabilization in Malaysia: An overview

Feasibility of Terrestrial Laser Scanning System for Detecting and Monitoring Surface Displacement of Artificial Slopes on Forest Roads

Finding key vulnerable areas by a climate change vulnerability assessment

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