Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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The Topography Characteristics on the Land Creep in Korea

우리나라 땅밀림지의 지형 특성

  • Park, Jae-Hyeon (Department of Forest Resources, Gyeongnam National University of Science and Technology) ;
  • Seo, Jung Il (Department of Forest Resource, Kongju National University) ;
  • Lee, Changwoo (Division of Forest Disaster Management, National Institute of Forest Science)
  • 박재현 (경남과학기술대학교 산림자원학과) ;
  • 서정일 (공주대학교 산림자원학과) ;
  • 이창우 (국립산림과학원 산림방재과)
  • Received : 2018.10.18
  • Accepted : 2019.01.11
  • Published : 2019.03.31
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Abstract

This study was carried out to analysis the landform characteristics of land creep areas in south Korea. Aspect ratio in 17 areas (approximately 46.0 %) among total land creep areas (37 areas) was ranged from 0.37 to 0.92. Also, aspect ratio in 36 areas (approximately 97.0 %) was less than 2. Longitudinal section form ratio of 15 areas (approximately 41.0 %) was less than 1.0, whereas 22 areas (approximately 59.0 %) were more than 1.0. Horseshoe hoof form in land creep areas were mostly appeared to flat land types, whereas convex terrain ground form was prevailed to micro-topography. Mean contour intervals were higher in micro-topography (mean 29.4 m, range 9.5 m ~ 83.2 m) than in except micro-topography (mean 24.3 m, range: 14.4 m ~ 59.4 m) in land creep areas. The contour intervals were slightly wider in micro-topography (mean 5.1 m, range: 4.9 m ~ 23.8 m) than in except micro-topography in land creep areas. The results indicate that contour intervals were significantly different (P < 0.05) between micro-topography and except micro-topography in land creep areas.

우리나라에서 발생된 땅밀림지의 지형특성을 분석하여 땅밀림지에 대한 지형적인 기초자료를 제공하기 위하여 실시하였다. Aspect ratio가 1.00 미만인 땅밀림지는 전체 37개소 중 17개소(약 46.0 %)로 0.37 ~ 0.92의 범위를 나타내었다. 또한 Aspect ratio가 2.00 미만인 경우는 전체 37개소 중 36개소(약 97.0 %)이었다. 종단형상비가 1.00 미만인 땅밀림 지역은 총 37개소 중 15개소(약 41.0 %)이었으며, 1.00 이상인 땅밀림지는 22개소(약 59.0 %)이었다. 우리나라에서 발생한 전체 37개소의 땅밀림지 중 평면형지형은 말발굽형이 가장 많은 것으로 나타났다. 또한 미세지형은 철(凸)상대지상 지형이 가장 많은 것으로 나타났다. 땅밀림지역의 미세지형의 등고선 간격을 평균한 결과 29.4(9.5 ~ 83.2)m이었으며, 땅밀림지 내에서 미세지형을 제외한 땅밀림지 내의 평균등고선 간격은 24.3(14.4 ~ 59.4)m로 미세지형이 5.1(4.9 ~ 23.8)m 더 넓게 나타났다. 우리나라에서 발생한 땅밀림지 내에서 미세지형의 평균 등고선 간격과 미세지형을 제외한 평균 등고선 간격의 T-test 분석 결과 5 % 수준에서 유의한 것으로 나타났다.

Keywords

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Figure 1. Location map of the study site. (KIGAM, 2018)1. san262, Unbuk-dong, Jung-gu, Incheon-si, 2. san11-1, Seoksu-dong, Manan-gu, Anyang-si, Gyeonggi-do, 3. san12-1, Baegan-ri, Yangpyeong-eup, Yangpyeong-gun, Gyeonggi-do, 4. Nogok 2ri, Nogok1ri, Wondeok-eup, Samcheok-si, Gangwon-do, 5. san74, Sangmaengbang-ri, Geundeok-myeon, Samcheok-si, Gangwon-do, 6. 176, Chogok-gil, Geundeok-myeon, Samcheok-si, Gangwon-do, 7. san1, Gujeol-ri, Yeoryang-myeon, Jeongseon-gun, Gangwon-do, 8. san148, Yachon-ri, Nam-myeon, Yanggu-gun, Gangwon-do, 9. san12, Sindae-ri,Munui-myeon, Sangdang-gu, Cheongju-si, Chungcheongbuk-do, 10.san46-7, Sang-ri, Yeongchun-myeon, Danyang-gun, Chungcheongbuk-do, 11. 143-10, Bugok-ri, Songak-eup, Dangjin-si, Chungcheongnam-do, 12. 44-7, Sinjindaegyo-gil, Geunheung-myeon, Taean-gun,Chungcheongnam-do, 13. san54-5, Jangsu-ri, Bongdong-eup, Wanju-gun, Jeollabuk-do, 14. san29, Honggye-ri, Daesong-myeon, Nam-gu, Pohang-si, Gyeongsangbuk-do, 15. san110-1, Yongheung-dong,Buk-gu, Pohang-si, Gyeongsangbuk-do, 16. san18, Chilseong-ri, Chuksan-myeon, Yeongdeok-gun, Gyeongsangbuk-do, 17. san8-2, Geumho-ri, Jicheon-myeon, Chilgok-gun, Gyeongsangbuk-do, 18. 72,Hyangyang-ro 217beon-gil, Jiphyeon-myeon, Jinju-si, Gyeongsangnam-do, 19. san12, Chucheon-ri, Gonmyeong-myeon, Sacheon-si, Gyeongsangnam-do, 20. san33, Samjung-ri, Gonmyeong-myeon, Sacheon-si, Gyeongsangnam-do, 21. san58, Jakpal-ri, Gonmyeong-myeon,Sacheon-si, Gyeongsangnam-do, 22. san49, Jodo-ri, Seopo-myeon,Sacheon-si, Gyeongsangnam-do, 23. 1082-1, Naesam-ri, Juchon-myeon, Gimhae-si, Gyeongsangnam-do, 24. san131-29, Mae-ri, Sangdong-myeon, Gimhae-si, Gyeongsangnam-do, 25. san333-5, Eogok-dong, Yangsan-si, Gyeongsangnam-do, 26. 1024-1, Halim2-gil, Gunbug-myeon, Haman-gun, Gyeongsangnam-do, 27. san80-1, Pyeonsa-ri,Agyang-myeon, Hadong-gun, Gyeongsangnam-do, 28. san217, Cheongnyong-ri, Okjong-myeon, Hadong-gun, Gyeongsangnam-do, 29.san36, Sangsin-ri, Ssangchaeg-myeon, Hapcheon-gun, Gyeongsangnam-do, 30. san213, Wolgye-ri, Gahoe-myeon, Hapcheon-gun, Gyeongsangnam-do, 31. 88, Hwangnyeong-daero 319beon-gil, Nam-gu,Busan, 32. san96-9, Janglim-dong, Saha-gu, Busan 33. 929, Dadae-dong, Saha-gu, Busan, 34. 154, Jodong 1-gil, Sindong-eup, Jeongseon-gun, Gangwon-do, 35. san90, Geummae-ri, Maehwa-myeon, Uljin-gun, Gyeongsangbuk-do, 36. san39, Unam-ri, Miwon-myeon, Sangdang-gu, Cheongju-si, Chungcheongbuk-do, 37. san108, Hwanghwajeong-ri, Yeonmu-eup, Nonsan-si, Chungcheongnam-do

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Figure 2. Aspect ratio (L / M), longitudinal section form ratio(equivalence friction factor, H / L). (Takaya, 2017)

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Figure 3. Flat form classification. (Park, 2018)

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Figure 4. Convex terrain and longitudinal section(a), convex terrain ground form(b), terrace concave ground(c), polygon concaveground(d), concave gentle slope form(e). (Park, 2018)

Table 1. Results of ratio aspect (L / M) and characteristics.

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Table 2. Results of ratio aspect (H / L) and characteristics.

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Table 3. Types of land creep in korea(flat form / fine form).

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Table 4. Average contour interval in korea landcreeps and average contour interval excluding find form.

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Table 5. Average contour interval in korea land creep and average contour Interval excluding find form (T-test analysis results).

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