Landslide susceptibility analysis of photovoltaic power stations in Gangwon-do, Republic of Korea

Figures & data

Figure 1. Flowchart illustrating the approach pursued in the present study.

Figure 2. Map of Korea highlighting the location of Gangwon-do. Source: Kakaomap (https://map.kakao.map)

Figure 3. Maps showing the frequency and distribution of landslides in Gangwon-do in 2006, 2013, 2019, and 2020. Source: Kakaomap (https://map.kakao.map).

Table 1. Summary of environmental variables exploited in the present study.

Factors	Variables	Abbreviation	Type	References	Data references
Rainfall	Daily maximum rainfall	dm	Continuous	Glade et al. (2000); Kirschbaum et al. (2015)	Korea Meteorological Administration (2021)
	Days with more than 150 mm/d	ov150	Continuous	Floris and Bozzano (2008); Sengupta et al. (2010); Kim et al. (2015)
	hourly maximum rainfall	hm	Continuous	Brand et al. (1984); Dhakal and Sidle (2004)
Topography	Elevation	elevation	Continuous	Gritzner et al. (2001); Saleem et al. (2019)	National Geographic Information Institute (2000); National Geographic Information Institute (2012); National Geographic Information Institute (2015)
	Slope	slope	Continuous	Aniya (1985); Pike (1988); Devoli et al. (2007)
	Aspect	aspect	Continuous	Gritzner et al. (2001); Ohlmacher and Davis (2003); Armas (2012)
	Soil depth	soildepth	Continuous	Tangestani (2004); Kavzoglu et al. (2015); Viet et al. (2017)	WAMIS (2008)
	Soil drainage	soildrain	Continuous	Lee and Min (2001); Gorsevski et al. (2006); Althuwaynee et al. (2014)
Vegetation	Forest type (3 types)	foresttype	Categorical	Lee et al. (2006); Lee (2007); Lee et al. (2017)	Ministry of Environment (2010, 2019)
Land use	Land use (7 types)	landuse	Categorical	Tasser et al. (2003); Pereira et al. (2012); Reichenbach et al. (2014)

Table 2. Regulations for limiting PPS installation in the study area.

Item	Description	Data reference
Road1	310 m buffer from roads	Road map (Ministry of Land Infrastructure and Transport 2020a)
Road2	320 m buffer from rural roads
House (L)	340 m buffer from large residential regions (area over 1508.8 m^2)	Land cover map (Ministry of Environment 2019)
House (M)	240 m buffer from medium residential regions (area over 688.8 m^2)
House (S)	140 m buffer from small residential area regions (area over 688.8 m^2)
Cropland	Agricultural areas
Tour	530 m buffer from tourist regions	Land use and district map (Ministry of Land Infrastructure and Transport 2020b)
Culture	500 m buffer from cultural properties
Nature	650 m buffer from the natural settlement regions
Conserve	Regions requiring environmental/landscape conservation	Species protection area (Ministry of Land Infrastructure and Transport 2021), Land use and district map (Ministry of Land Infrastructure and Transport 2020b)

Figure 4. Maps showing LSAs and PPS locations for different target years. The red in the maps highlights LSAs, while the yellow dots represent PPSs located within the LSAs, and the blue dots show PPSs located outside the susceptible areas. Source: Kakaomap (https://map.kakao.map).

Figure 5. Plot showing the PPSs distribution relative to the LSA for various target years.

Figure 6. Combined map of accumulated number of LSA for 4 target years and the PPS installable areas.Source: Kakaomap (https://map.kakao.map) .

Figure 7. Examples of PPSs that featured in LSAs 3 or 4 times in the four target years. Source: Kakaomap (https://map.kakao.map).

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Data availability statement

The data that support the findings of this study are available on request from the corresponding author, [Chae Yeon Park]. The data are not publicly available due to their containing information that could compromise the privacy of research participants.