• Title/Summary/Keyword: Lowland

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Phytophthora Root Rot of Chinese Cabbage and Spinach Caused by P. drechsleri in Korea

  • Jee, Hyeong-Jin;Kim, Wan-Gyn;Cho, Weon-Dae
    • The Plant Pathology Journal
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    • v.15 no.1
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    • pp.28-33
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    • 1999
  • Phytophthora root rot of Chniese cabbage and spinach is reported for the first time in Korea. The diseases ocurred at Yangju, Seosan and Yeocheon in Korea from 1995 through 1998, mainly in lowland and submerged areas. Symptoms consisted of stunt, yellows, wilt and eventual death due to root rot. Fourteen isolates collected from naturally infected plants were all identified as P. drechsleri based on mycological characteristics. PCR-RFLP analysis of rDNA of the isolates confirmed the above result, since the restriction band patterns of the small subunit and internal transcribed spacers were identical to P. drechsleri and P. cryptogea, but distinct from closely related species of P. erythroseptica, P. cambivora, P. sojae and P. megasperma. The pathogen showed strong pathogenicity to Chinese cabbage, moderate to spinach, radish, cabbage and tomato, and weak or none to brown mustard, kale, chicory and pepper in pathogenicity tests.

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Floodwave Modeling in Inundated Area Resulting from Levee-Break (제내지에서의 범람홍수파 해석을 위한 수치모형의 개발)

  • 이종태;한건연
    • Water for future
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    • v.28 no.5
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    • pp.163-174
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    • 1995
  • A diffusion hydrodynamic model named "DFLOW-2" for the floodwave analysis from levee-break in protected lowland has been developed. The model has been applied to Ilsan levee-break, which occurred on September 12-13, 1990 in the downstream of the Han River. An unsteady flow analysis has been made in the reach from Indokyo to Junryu. Overflow through broken levee has been treated as internal boundary condition in the channel. A post-processor has been also developed to demonstrate the simulation results. The velocity distributions and inundated depths have been presented. The computed results have good agreements with observed data in terms of inundation depth, flood arrival time and flooded areas.ded areas.

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A Study on the Tartan and Scotland Costume (TARTAN과 스코틀랜드 복식에 관한연구)

  • 임영자
    • Journal of the Korean Society of Costume
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    • v.35
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    • pp.281-292
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    • 1997
  • Tatan is a symbol of kinship and belonging in Scotland and a badge of identity recognized all over the world. Alongside the powerful historical and national resonance to Tartan for Scots it has been borrowed repeatedly by fashion. The pattern compositionof Tartan check is formed as a typical cross stripes that vertical line and hrizontal line meets rectangulary. And its color is much various and rich than other check pattern. So its magnificient spec-tacle that various all kinds of colors is dyed in cloth is second to name. Today we are as likely to meet tartan in a couturier dress as in a kilt or plaid. Tartan is distinctive in colour style and de-sign. It conveys personality ceremony and drama. All these aspects of its character have contributed to tartan being one of the best-known and best-loved fabrics in the world. In other parts of Europe traditional checked patterns declined and disappeared but in Scotland tartan survived strongly jist as the bagpipes also European flourished Due to geographical and cultural circumstances Scots were able to develop and enhance tartan and its remarkable individuality ensured its sur-vival in spite of adverse political and economic pressures. Tartan has been adopted as the national dress of all Scots. Lowland and High-land providing a powerful form of national cultural and personal identity. Whether tra-ditional or a recent creation whether tra-ditional or a recent creation whether a symbol of nationality or a substitute for nationhood tartan is no mean achievement.

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Changes of Stream Water Quality and Loads of N and P from the Agricultural Watershed of the Chooryung-chon Tributary of the Sumjin River Basin

  • Cho, Jae-Young;Han, Kang-Wan;Choi, Jin-Kyu
    • Korean Journal of Environmental Agriculture
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    • v.19 no.5
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    • pp.370-374
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    • 2000
  • At this study, the monitoring network of water quality was established in the agricultural watershed an area 14,960 ha of the central southwest of Korea. Loads of nitrogen and phosphorus by agricultural land use were quantified bases on total amounts of stream flow. The land were used as a lowland paddy, an upland and a forest about 12.14 % (1,815 ha), 5.17 % (773 ha) and 80.31 % (12,015 ha) of the area, respectively. For six months, from May 1 to October 31, 1999, the total precipitation was 970 mm and the total amount of stream flow was $80,281,000\;m^3$. In the load of agricultural non-point sources relevant to land use, total-N was 138,413 kg, then ammonia-N 13,362 kg, nitrate-N 124,629 kg, and total-P 157 kg. The loss of nutrient which from application of chemical fertilizer were 38.0% in nitrogen and 0.1% in phosphorus to input chemical fertilizer in the watershed.

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Resources Evaluation System for Rural Planning Purposes(IV) - Application Study to the Case Areas - (농촌계획지원용 지역자원평가시스템 구축(IV) - 사례지역 적용연구 -)

  • Choi, Soo-Myung;Han, Kyung-Soo;Hwang, Han-Cheol
    • Journal of Korean Society of Rural Planning
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    • v.5 no.1 s.9
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    • pp.26-34
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    • 1999
  • This study, a sub-one of comprehensive research works titled under "Rural Resources Evaluation System", tried to verify utility/applicability of the developed model system through the case study works on 3 sample villages, Backya, Uyan and Suyu, representing the lowland, upland and seashore villages respectively. From the various surveying and collecting works including the official/statistical data collection, map analysis, in-situ investigation, field survey and written material review, the original data set were obtained and manipulated into final input data for resources grading. After then, by the automatized calculation procedure of "Rural Resources Evaluation System", score results for resources evaluation were finally produced with the total maximum score being 1,000. Through comparing works among score results of 3 case villages and between score results and areal characteristics of each case village, the applicability of the system developed in this study was well confirmed.

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APPLICATION OF REMOTE SENSING FOR COASTAL HAZARD MONITORING IN TAM GIANG - CAU HAI LAGOON, VIETNAM

  • Dien, Tran Van;Lan, Tran Dinh;Huong, Do Thu
    • Proceedings of the KSRS Conference
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    • v.1
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    • pp.455-458
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    • 2006
  • Stretching on the coastline of 70 km, the Tam Giang - Cau Hai Lagoon plays a very important role for the coastal ecology and socio-economic development of Hue region where was Vietnam's Ancient Kingdom Capital and recognized as a World's Cultural Heritage. Recently, coastal hazard in the lagoon have occurred seriously such as inlet movement and fill up, coastal erosion, flood and inundation, etc. These hazards have impacted on lagoon environment, resources, ecosystems, socio-economic and sustainable development of this coastal area. This paper present a case study using remote sensing data in combination with ground survey for monitoring the coastal hazards in Tam Giang - Cau Hai lagoon in recent decades. Analysis results find that during its natural evolution, the lagoon has been being in three situations of only one, two and three inlets. When inlets opened or displaced, coastal erosion have occurred seriously toward new balance condition. Flood and inundation occurs every rainy season in lowland plain around lagoon. The historical flood happened in early of November 1999 with six days long, created very terrible damages for Thua Thien Hue province. Remote sensing data with capability of regular update, large area coverage is effective provide real-time and continuous information for coastal hazards monitoring.

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Effect of Soil Media in Mushroom Mycelial Incubation (흙배지의 버섯균사배양 이용 효과)

  • Chang, Hyun-You
    • Journal of Agricultural Extension & Community Development
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    • v.6 no.2
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    • pp.141-147
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    • 1999
  • This experiments were carried out to development low-priced mushroom culture media, and the results were as follows : Mycerial growth and density of Pleurotus ostreatus in the culture media of 40% of yellow soil, upland soil and lowland soil(each and all) added 60% sawdust and rice bran(80:20, %, v/v) were 89, 88, 68mm/10days in that order. Lentinus edodes were in the media of $40{\sim}50%$ of that added 60% sawdust and rice bran(80:20, %, v/v) were 74, 71, 68mm/10days. Ganoderma lucidum were in the media of $40{\sim}50%$ of that added 60% sawdust and rice bran(80:20, %, v/v) were 98, 94, 89mm/10days in that order.

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A new species of Juncus (Juncaceae): J. baekdusanensis M. Kim (골풀속(골풀과)의 신종: 김의골풀(Juncus baekdusanensis M. Kim))

  • Yun, Kyeong Won;Jo, Hyun;Kim, Muyeol
    • Korean Journal of Plant Taxonomy
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    • v.44 no.4
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    • pp.238-241
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    • 2014
  • A new species, Juncus baekdusanensis M. Kim (Juncaceae), has been named and described from Mt. Baekdu of the Korean peninsula. Juncus baekdusanensis shares several characters (terete leaf blades with leaf sheath auricles, between 1 and 2 flowered inflorescences, and 2 bracteoles) with its related species J. tenuis Willd. It is, however, distinct from J. tenuis which have 1-flowered inflorescences, green perianth, lanceolate perianth segments, acuminate perianth apexes, small capsules, and lowland grassland habitats by having 2-flowered inflorescences, reddish green perianth, ovate perianth segments, acute perianth apexes, large capsules, and highland swamp habitats.

A Study on the Inundation Analysis of the Nam River Lowland Using GIS and FLUMAN (GIS와 FLUMAN을 이용한 남강 저지대 침수분석에 관한 연구)

  • Choi, Hyun
    • Journal of Korean Society for Geospatial Information Science
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    • v.25 no.2
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    • pp.49-56
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    • 2017
  • In this study, flood analysis was conducted to prepare for damage caused by typhoons and heavy rain due to abnormal climate and climate change. Two - dimensional flooding analysis using the FLUMEN model, which is widely used for national and international flood risk mapping, was conducted for the Nam River Basin, which is the tributary of the Nakdong River. This study divides the topography into $5m{\times}5m$ DEM by ArcView, so that the accuracy of river repair and hydrological characterization and flood area identification can be maximized. As a result of simulation of water flooding, 163.3ha in section 1, 227.7ha in section 2 and 59.9ha in section 3 were simulated.

Investigations on Inundation Damage in Greenhouse Complex Established at Lowlands on the Geumgang Riverside (금강변 저지대 시설원예단지의 침수피해 실태와 개선방안 조사연구)

  • Nam, Sang-Woon;Kim, Tae-Cheol;Kim, Dae-Sik
    • Journal of The Korean Society of Agricultural Engineers
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    • v.52 no.3
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    • pp.47-55
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    • 2010
  • Investigations on the inundation damage and improvement measures were carried out centering around the protected horticultural complex concentrated in lowlands on the side of Geum river, in Nonsan and Buyeo, Chungnam. Most greenhouses were single-span plastic houses in this area, and tomato, strawberry and watermelon were cultivated mainly. 45.8 % of whole farmhouse were experienced in damage by inundation, and a frequency of the damage was average once in 11 years. The most urgent problem at the greenhouse culture in this area was showed in order of drainage improvement, irrigation water resources and energy saving. Consideration items in drainage improvement project for protected horticulture were showed in order of extending drain pumps, extending drain canals, using concrete flume in drain ditch. It needs to consider systematic plans that can restrain new establishment of greenhouses on the lowland paddy field in drainage area. It is difficult to remove greenhouses which are already established or prohibit cultivation. Therefore we should impose minimum duty items so that greenhouse tillers can cope with inundation. And it is thought that managing agency need to minimize farmers damage by improving drainage ability and introducing maintenance pattern that is different from rice cropping.