• Water for future
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• v.29 no.4
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• pp.57-57
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• 1996

• Proceedings of the Korean Geotechical Society Conference
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• 2004.03a
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• pp.176-187
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• 2004

서울ㆍ경기지역은 한반도의 서부중앙지역으로 동경 126$^{\circ}$와 127$^{\circ}$, 북위 36$^{\circ}$와 38$^{\circ}$ 사이에 위치해 있으며, 면적은 서울 605$\textrm{km}^2$, 경기도 10,184$\textrm{km}^2$를 차지한다. 북쪽으로는 휴전선, 서쪽으로는 서해, 동쪽으로는 강원도, 남쪽으로는 충청도와 접하고 있으며 한강에 의해 남북지역으로 나뉘어져 한 수 이북은 산간지역이 한 수 이남지역에는 평야지대가 발달하고 있다. 지형은 대체로 추가령 구조곡을 경계로 북부산지와 남부산지로 나누어지는데, 북부는 중국 요동방향의 마식령산맥, 남부는 중국방향의 광주산맥과 차령산맥이 각각 그 골간을 이루고 있으며, 서쪽해안에 가까워질수록 고도가 낮아져 평야나 구릉성 산지로 바뀐다.(중략)

• The Korea Beekeeping Bulletin
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• s.344
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• pp.22-25
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• 2009

지난해, 극심한 아카시아 벌꿀 흉년으로 벗어나 평년작을 달성해 양봉농가의 시름을 덜었다 했다. 그러나 올해는 더욱 예측불가능해진 기상이변으로 2004년 수준의 대흉작이 예고 되고 있다. 남부지역은 극심한 봄 가뭄으로 아까시나무가 개화 하자마자 빠르게 시들어 버렸으며 가뭄현상이 비교적 약했던 경상 북부지역은 개화 후 큰 폭의 일교차로 꿀 생산량 감소했다. 중부 경기북부지역은 5월 아까시 꽃의 개화 후 잦은 비로 인해 아카시아 벌꿀생산량이 바닥을 보였다. 강원 일부 지역에서는 채밀을 전혀 못한 곳도 있어 심각한 수준이다. 여기에 잠잠해졌던 아까시 나무 황화현상까지 다시 번지고 있는 실정이다.

• Journal of agriculture & life science
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• v.43 no.6
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• pp.7-17
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• 2009

The objectives of this study were to analyze vegetation type and stand structure of the red pine (Pinus densiflora) in Kangwon northern region for stable and sustainable management forests. The pine forests in study sites were classified into 3 communities, 5 groups, and 2 subgroups, total 7 vegetation units. Species with constance degree of more than 61% were P. densiflora, Quercus mongolica, Lindera obtusiloba, Spodiopogon sibiricus, Atractylodes japonica, Rhododendron mucronulatum, and Carex humilis. They were showing different characteristics by pattern according to their growing district. In the importance value (I.V.) analysis of each layer, P. densiflora showed highly in tree layer while in other layers Quercus spp. was high. Especially, young P. densiflora tree hardly appeared in the herb layer, but broad-leaved trees and shrub species showed high I.V.. Furthermore, the annual ring growth of P. densiflora was reduced while that of Q. spp. increased. According to analysis of stand structures and annual ring growths, it is considered that appropriate silvicultual practice methods should be employed to remove rival broad-leaved species for maintenance of sustainable red pine forests considering the characteristics of each stand.

• 한국지구과학회:학술대회논문집
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• 2001.09a
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• pp.72-72
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• 2001

• The Korea Swine Journal
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• v.18 no.9 s.205
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• pp.66-67
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• 1996

• Korean journal of applied entomology
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• v.58 no.3
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• pp.239-249
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• 2019

This study was carried out to compare on the time of occurrence of 6 major rice insect pests [Lissorhoptrus oryzophilus Kusche, Oulema oryzae Kuwayama, Sogatella furcifera (Horvath), Nilaparvata lugens Stal., Cnaphalocrocis medinalis (Guenee), Mythimna separata Walker] in northern part of the Korean peninsula. Using growing degree days of the insects, we evaluated the number of occurrence generations and the time of occurrence. Over-wintering insects such as L. oryzophilus and O. oryzae showed different occurrence periods in northern regions. The occurrence period of the first generation adults was later in northeast regions than in Korean middle regions and more later both in northern alpines and in northern parts of east sea. In addition, the first adults of S. furcifera, N. lugens, C. medinalis, and M. separata occurred between June and early August. However, from late August to September, these insects showed the different occurrence periods in northern regions. Especially, the second adults of N. lugens were not occurred and the second to third generation adults of S. furcifera, C. medinalis, and M. separata showed similar occurrence properties. Based on these properties, the occurrence of major rice insect pests will be less in northeast regions, northern regions of east sea, northern inlands, and northern alpines of the Korean peninsula. However, comparing with their occurrences in northern regions of Gyenonggi and Gangwon provinces, the rice insect pests may show similar occurrence pattern in mid-korean mountains except for pyunggang and yangduk regions as well as in the southern and northern regions of Suyang-san.

• Journal of the Korean GEO-environmental Society
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• v.14 no.3
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• pp.35-40
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• 2013

In most cases, Geotechnical Structures installed in freezing areas require extra countermeasures for reducing freeze damage. However, in terms of domestic tunnels, studies and case reports for geotechnical structures such as tunnels and retaining walls are not fluently carried out, causing lack of research about ways to decrease freeze damage. For these causes, domestic design criteria about structures does not specifically institutionalization for geotechnical structures. This research have done on-site investigation about tunnels, cut slopes and retaining walls. Also, this research includes the process of analyzing the histories of maintenance for class 1 and class 2 structures that happened in the past 40 years, studying characteristics of structure's maintenance and reinforcement in different areas with different climate. As the result, it was analyzed that domestic geotechnical structures showed need for longer maintenance and reinforcement that are located in Gangwon mountain area, Gangwon north region and Gyeonggi north region where the temperature is relatively low. This research can be concluded in need for revision of design criteria for structures located in freeze damage area.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.58-58
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• 2019

덕항산 산림유전자원보호구역(337ha)은 강원도 삼척시 신기면에 위치하며, 남한에서 유일하게 해발고도 1,000m에 가까운 고산지대에 발달한 카르스트지형을 가지고 있다. 본 연구는 석회암지대의 식생현황을 제공하여 석회석 광산 채굴 등 황폐화가 진행되고 있는 석회암지대의 식생을 복원하기위한 식생자료로 활용되고자 실시되었다. 2018년 4월 9일부터 10월 31일 까지 총 15회에 걸친 계절별 현지 조사를 실시한 결과, 덕항산 지역에서 발견된 관속식물은 90과 302속 479종 4아종 51변종 3품종 총 537분류군으로 조사되었다. 그 중 한국특산식물은 북부지방 고산지대에 자생한다고 알려진 Pseudostellaria setulosa Ohwi(숲개별꽃)과 우리나라 석회암지대에서만 발견된다고 알려진 Saussurea calcicola Nakai(사창분취)와 Peucedanum insolens Kitag.(덕우기름나물)을 포함하여 18분류군이 발견되었고, 희귀 및 멸종위기식물은 멸종위기 야생식물 II급에 속하는 Astilboides tabularis (Hmsl.) Engl.(개병풍)과 Vioela websteri Hemsl.(왕제비꽃)을 포함하여 18분류군이 분포하였다. 또한 석회암지대 지표식물 33분류군, 식물구계학적 특정식물 총 113분류군이 조사되었으며, 귀화식물은 27분류군이 확인되었다. 기후변화 취약식물은 특산식물 11분류군, 북방계식물 22분류군으로 총 33분류군이 조사되었다. 본 대상지는 온대북부 석회암지대의 특성상 특산식물과 북방계식물이 주로 발견되었으며, 남방계식물은 현재까지 발견되지 않았다. 지구온난화로 인한 남방계 식물의 북상은 우려와는 달리 현재까지는 미비한 수준으로 판단되며, 북방계식물의 생육에 적합한 환경을 유지하고 있는 것으로 판단된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.1
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• pp.189-199
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• 2019

The purpose of this study is to derive spatial area(preventive zone) where the movement of livestock vehicles occurs frequently. For this purpose, this study used 6 periods facility entrance data provided by KAHIS. This data was converted into vehicle movement data between livestock facilities and aggregated into administrative district units. The R-mode factor analysis was performed on the constructed OD data, and the region extracted by the same factor was judged as one region. The results of the analysis are summarized as follows. First, the factor analysis of 6 periods data showed 16 ~ 18 factors, and the derived factors explained 63 ~ 68% of the total variance. Second, based on the factors that were derived, Jeonam coastal area, Jeonnam area, Jeonbuk area, Chungnam coastal area, Gyeongnam area, northern Gyeongbuk area, Yeongnam costal area were found to be stable, with little change over time. On the other hand, Chungbuk area, Gangwon area, Seoul metropolitan area are relatively volatile areas. Third, 13 areas were derived by combining data from six periods.