• 농촌계획
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• 제9권3호
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• pp.9-16
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• 2003

The aim of this study is to analyze the improvement of housing renewal project and suggest the conditions of rural housing environment filled with the resident's desire, requirements concerning about characteristics of a rural environment and temporal and social requirements. The project for improvement of rural housing environment has been executed in a few ways: reform of the rural housing environment and the development of territories for settlement of a desolate region. To analyze and assess the accomplishments, we considered codes and process related to the project for improvement of rural housing environment and analyzed present conditions and problems through many reference books and administrative data. According to these results, devices in future business for improvement of rural housing environment are as follows; It should required a rational allocation of working space, living space, cultural activity space suitable for rural area characteristics and changed into uniformed system in various projects governed by different institutions.

• 한국토양비료학회지
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• 제47권1호
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• pp.48-58
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• 2014

In order to evaluate water balance at upland according to RCP8.5 climate change scenario distributed by Korean Meteorological Administration (KMA), we simulated soil moisture using estimation model, called AFKAE0.5 for 66 sites from 2011 to 2020, and established the water balance maps. The amount of annual average precipitation by RCP8.5 scenario was highest in 2016 as recorded 2,062 mm and lowest in 2011 with 1,134 mm. As result of analysis for monthly precipitation and runoff, the amounts of precipitation and runoff have been especially intensive in July in 2014, 2016, 2019, and 2020. Overall, the area of Kyeongbuk and Gyeonggi was estimated more dried status of soil compared with precipitation. Except 2015 and 2020, soil water balance was recorded as negative value in other years which was calculated by subtracting output from input. The status of soil moisture was the most dry in 2020 among those in other years.

• 한국지역사회생활과학회지
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• 제27권spc호
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• pp.681-688
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• 2016

This study examined the effective uses of an ecosystem service value assessment in the fields of rural planning and development through archiving and reviewing/analyzing existing concepts, evaluation methods and prior examples of Ecosystem services. Based on land cover analysis, this study evaluated the usability changes in the ecosystem service value for a period spanning 1975 to 2000. The results from the countrywide data survey (with an exception of Jeju island) showed a 33.15% decrease in ESV by 2000. The total ESV represented 5,385 million USD in 1975, and 3,600 million USD in 2000 of the study area. In addition, the ecosystem service value with a scale of metro cities and provinces was also examined. The ESV of most regions decreased by 2000, but Daejeon and Kyeongnam, and Kyeongbuk provinces increased. The trends of year to year changes in the ESV were very diverse throughout the country. Jeonnam showed the smallest decrease, 747 million USD, which is 59% of the ESV in 1975. Nevertheless, the despite the regional differences in available natural resources, the natural resource assets value is ultimately determined by rural development policies and regional economic attributes. Therefore, an ecosystem service must be considered as an important criterion for rural planning and development policy.

• 한국지역사회생활과학회지
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• 제27권spc호
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• pp.689-702
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• 2016

In this study, it was promoted for the purpose of direction for rural landscape planning and management through the analysis of the factors of change in the rural landscape. In the course of research, through literature review study and field surveys, to derive the 25 factors that influence the change in the rural landscape. Later, 25 factors were evaluated in the impact on landscape by experts. 25 factors of the rural landscape were a comprehensive analysis and the results of literature review study and field surveys about the five villages of research area; Ji-San village, Non-Gae village, etc. Expert evaluation was carried out by the rural landscape, and architecture professionals of various related fields. As a result of the analysis, the flow of rural development policy and the business had a great effect on the physical changes in the rural landscape. Furthermore, additional factors such as population structure and lifestyle have made the change in the complex landscapes. Meaning the study has is to provide information on what need there are considered factors in the rural landscape planning and management. The reason is that, since the rural landscape characteristics are different, in order to develop the more efficient rural landscape plan and management.

• The Plant Pathology Journal
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• 제32권6호
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• pp.575-579
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• 2016

Burkholderia glumae (bacterial grain rot), Xanthomonas oryzae pv. oryzae (bacterial leaf blight), and Acidovorax avenae subsp. avenae (bacterial brown stripe) are major seedborne pathogens of rice. Based on the 16S and 23S rDNA sequences for A. avenae subsp. avenae and B. glumae, and transposase A gene sequence for X. oryzae pv. oryzae, three sets of primers had been designed to produce 402 bp for B. glumae, 490 bp for X. oryzae, and 290 bp for A. avenae subsp. avenae with the $63^{\circ}C$ as an optimum annealing temperature. Samples collected from naturally infected fields were detected with two bacteria, B. glumae and A. avenae subsp. avenae but X. oryzae pv. oryzae was not detected. This assay can be used to identify pathogens directly from infected seeds, and will be an effective tool for the identification of the three pathogens in rice plants.

• 식물병연구
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• 제21권1호
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• pp.24-26
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• 2015

In April 2014, seedlings of Fallopia multiflora showing wilt symptom were first found at a greenhouse in Punggi-eup, Yeongju-si, Korea. A Fusarium-like fungus was isolated from the wilted plant and it was identified as Fusarium oxysporum based on morphological characteristics and nucleotide sequence data of translation elongation factor 1-${\alpha}$. The fungus isolated from the diseased plant was revealed to be pathogenic to the host plant through pathogenicity tests, and the reisolation of the pathogen confirmed Koch's postulates. This is the first report of Fusarium wilt occurring on Fallopia multiflora in the world.

• 식물병연구
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• 제12권3호
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• pp.185-188
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• 2006

2005년 전남 나주와 광주의 멜론 재배포장에서 잎맥을 따라 갈색으로 변색되면서 시드는 증상이 관찰되었고, 과실 표면에는 점무늬의 수침상이 형성되며 과실 내부는 갈색으로 썩는 증상이 관찰되었다. 잎과 과실의 병반부로부터 2개의 세균을 분리하여 생리생화학적 실험, 유전적 실험 및 병원성 실험 결과 Acidovorax avenae subsp. citrulli로 동정되었다. 이 보고는 국내에서 최초이며, 이 병을 멜론 과실썩음병으로 명명할 것을 제안한다.

• The Plant Pathology Journal
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• 제18권5호
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• pp.244-250
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• 2002

Grapevine leafroll-associated 3 virus (GLRaV-3) and Grapevine fanleaf virus (GFLV) are important viral diseases of grapevine in the world. In this study, the most reliable woody indicator plants were selected for virus indexing. Two grapevines, LN33 (Couderc 1613x vitis berlandieri) and Vitis riparia Gloire, were selected for CLRaV-3 and CFLV graft indexing, respectively. The specific characteristics of Closterovirus isolated from grapevines cultivated in Korea were identified. filamentous virus-like particles only existed in the phloem parenchyma cell. In particular, the vesiculation of mitochondria was observed. This mitochondrial vesicu-lation was considered to be one of the most reliable cytopathic features of Closterovirus. During observation of GFLV-infected Chenopodium quinoa sections, virus-like particles arranged consistently were found forming several layers in cytoplasm. Moreover, virus-like particles in tubules were observed and were associated with plasmodesmata in cytoplasm. This is the first report on cytopathological characteristics of Closterovirus and Nepovirus identified from grapevines in Korea.

• 식물병연구
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• 제22권3호
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• pp.194-197
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• 2016

Chinese yam necrotic mosaic virus (CYNMV) is one of the most widespread viruses in Chinese yam (Dioscorea opposita Thunb.) and causes serious yield losses. Currently, genetic information of CYNMV is very restricted and complete genome sequences of only two isolates (one from Japan and another from China) have been reported. In this study, we determined complete genome sequence of the CYNMV isolate AD collected from Andong, Korea. Genetic analysis of the polyprotein amino acid sequence revealed that the Korean isolate AD has high similarity with the Japanese isolate PES3 (97%) but relatively low similarity with the Chinese isolate FX1 (78%). Phylogenetic analysis using the CYNMV 3' proximal nucleotide sequences harboring the coat protein and 3' untranslated region further supported genetic relationship among the CYNMV isolates. Based on comparative analysis of the CYNMV genome sequences determined in this study and other previous studies, we generated molecular detection primers that are highly specific and efficient for CYNMV diagnosis.

• 한국농공학회논문집
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• 제61권3호
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• pp.15-22
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• 2019

In order to preserve water environment, Total Maximum Daily Load(TMDL) is used to manage the total amount of pollutant from various sources, and the annual average load of source is calculated by the unit load method. Determination of the unit load requires reliable data accumulation and analysis based on a reasonable estimation method. In this study, we propose a revised unit load estimation method by analyzing the unit load calculation procedure of National Institute of Environment Research(NIER) method. Both methods were tested using observed runoff ratio and water quality data of rice paddy fields. The estimated values with the respective NIER and revised NIER methods were highly correlated each other. However, the Event Mean Concentration(EMC) and the runoff ratio considered in the NIER method appeared to be influenced by rainfall classes, and the difference in unit load increases as the runoff and EMC increase. The error can be further increased when the EMC and runoff ratio are changed according to changes in rainfall patterns by climate change and change of agricultural activities. Therefore, it is recommended to calculate unit load by applying the revised NIER method reflecting the non point pollution runoff characteristics for different rainfall classes.