• 농촌계획
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• 제26권2호
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• pp.83-93
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• 2020

Rural areas have been faced with various problems such as aging and population decline, and in these circumstances, the activation of local communities is suggested as a solution. Agricultural producer organizations are a powerful means of maintaining rural society. The purpose of this study is to understand the characteristics of agricultural community activities by region by comparing the status of organization and activities and analyzing Location Quotient(LQ) based on the regional survey data in the 2015 census of agriculture, forestry, and fisheries. As the results of the analysis, it was found that 38.35% of villages participated in economic organizations and 32.22% of villages were having urban-rural exchange activities. The crop clubs were actively operated in the Gyeongsangbuk province, and other economic organizations were organized in Jeju, Haenam-gun, and Dangjin-si more than other regions. And the urban-rural exchange activities were found in Chungcheongnam province mainly. The results of detailed LQ analysis by organization and activity showed that specialized regions for each community or activity were different. These results could be used for regional planning or the establishment of strategies for community activation.

• Journal of Microbiology and Biotechnology
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• 제32권5호
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• pp.564-574
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• 2022

Microbial diversity in the soil is responsive to changes in soil composition. However, the impact of soil amendments on the diversity and structure of rare and abundant sub-communities in agricultural systems is poorly understood. We investigated the effects of different Chinese herb residue (CHR) soil amendments and cropping systems on bacterial rare and abundant sub-communities. Our results showed that the bacterial diversity and structure of these sub-communities in soil had a specific distribution under the application of different soil amendments. The CHR soil amendments with high nitrogen and organic matter additives significantly increased the relative abundance and stability of rare taxa, which increased the structural and functional redundancy of soil bacterial communities. Rare and abundant sub-communities also showed different preferences in terms of bacterial community composition, as the former was enriched with Bacteroidetes while the latter had more Alphaproteobacteria and Betaproteobacteria. All applications of soil amendments significantly improved soil quality of newly created farmlands in whole maize cropping system. Rare sub-communitiy genera Niastella and Ohtaekwangia were enriched during the maize cropping process, and Nitrososphaera was enriched under the application of simple amendment group soil. Thus, Chinese medicine residue soil amendments with appropriate additives could affect soil rare and abundant sub-communities and enhance physicochemical properties. These findings suggest that applying soil composite amendments based on CHR in the field could improve soil microbial diversity, microbial redundancy, and soil fertility for sustainable agriculture on the Loess Plateau.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.241-246
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• 2009

In recent farming communities, the international open-economy tendency has been accelerated, and they are in the situation where they cannot but compete against international producers and markets. As a means to survive in this competitive era, a systematic agricultural information system is required to be established. Accordingly, in recent Korean agricultural communities, it's been regarded as an important alternative to provide and construct agricultural facility and to build an information system to maintain and manage them. However, in reality, the agricultural facility has not been constructed systematically enough, and the information system for the users of the agricultural facility has not been sufficient enough. Therefore, this research aims at analyzing the demands of users which might help establish the agricultural facility information system, and at providing information by suggesting what information the users of an agricultural facility information system want. Once the agricultural facility users are provided with some necessary information, the construction process will be more systematized, a structural safety will be secured by the construction by a professional enterprise, and the cost burden has to bear for users who can be effectively decreased by actively reacting to the natural disasters on the facility.

• 환경생물
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• 제36권1호
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• pp.21-32
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• 2018

본 연구는 국가중요농업유산으로 지정된 울릉도 (울릉도 화산섬 밭 농업) 나리분지와 통구미지역의 지표배회성 무척추동물 군집의 특성을 확인하기 위해 수행되었다. 서식지 형태를 작물재배지역, 산림지역, 중간 경계지역으로 나누어 서식지 형태별로 지표배회성 무척추동물을 채집하였다. 채집은 함정 트랩을 이용하였고 채집된 지표배회성 무척추동물은 자기조직화지도를 이용하여 군집 특성을 규명하였다. 자기조직화지도를 통해 총 4개의 cluster로 나누었으며, cluster II에는 통구미지역에서 채집된 지표배회성 무척추동물 군집만이 속하는 특성을 확인할 수 있었다. 나리분지 (cluster I, III, IV)와 비교하여 통구미지역 (cluster II)은 울릉도에서 흔히 확인되는 산간지역 경작지를 밭으로 개간하여 이용하는 지역으로 울릉도에서 흔히 관찰되는 지형적 특성을 가지고 있다. 이러한 통구미지역은 평지의 형태를 가지는 나리분지 지역과는 달리 급경사의 특성을 나타내기 때문에 다른 군집특성이 나타난 것으로 판단된다. 본 연구결과는 국가중요농업유산으로 선정된 울릉도지역의 생물상에 대한 기초자료와 지표배회성 무척추동물 군집 특성에 관한 정보를 제공하여 농업 환경 보전 및 생물다양성 유지를 위해 활용될 것으로 기대된다.

• 한국토양비료학회지
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• 제47권2호
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• pp.100-106
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• 2014

The present study investigated variations in soil microbial communities by fatty acid methyl ester (FAME) and the chemical properties at 24 sites of upland soils in Gyeongnam Province. The electrical conductivity of the soil under potato cultivation was significantly higher than those of the red pepper and soybean soils (p < 0.05). The gram-negative bacteria community in potato soil was significantly lower than those in the garlic and soybean soils (p < 0.05). The communities of actinomycetes and arbuscular mycorrhizal fungi in the red pepper soil were significantly higher than those in the potato soil (p < 0.05). In addition, the cy17:0 to 16:$1{\omega}7c$ ratio was significantly lower in red pepper, soybean, and garlic soils compared with potato soil, indicating that microbial stress decreased. Consequently, differences in soil microbial community were highly associated with cultivated crop species, and this might be resulted from the difference in soil chemical properties.

• Journal of Microbiology and Biotechnology
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• 제29권3호
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• pp.441-453
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• 2019

Organic farming is considered an effective form of sustainable agricultural management. However, understanding of soil microbial diversity and composition under long-term organic and conventional farming is still limited and controversial. In this study, the Illumina MiSeq platform was applied to investigate the responses of soil bacterial and fungal diversity and compositions to organic farming (OF) and improved conventional farming (CF, applied straw retention) in the rice-wheat rotation system. The results highlighted that the alpha diversity of microbial communities did not differ significantly, except for higher bacterial diversity under OF. However, there were significant differences in the compositions of the soil bacterial and fungal communities between organic and conventional farming. Under our experimental conditions, through the ecological functional analysis of significant different or unique bacterial and fungal taxonomic members at the phyla and genus level, OF enhanced nitrogen, sulfur, phosphorus and carbon dynamic cycling in soil with the presence of Nodosilinea, Nitrospira, LCP-6, HB118, Lyngbya, GOUTA19, Mesorhizobium, Sandaracinobacter, Syntrophobacter and Sphingosinicella, and has the potential to strengthen soil metabolic ability with Novosphingobium. On the other hand, CF increased the intensity of nitrogen cycling with Ardenscatena, KD1-23, Iamia, Nitrosovibrio and Devosia, but enriched several pathogen fungal members, including Coniochaeta, Corallomycetella, Cyclaneusma, Cystostereum, Fistulina, Curvularia and Dissoconium.

• 환경생물
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• 제34권4호
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• pp.233-239
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• 2016

산지초지의 관리 강도가 약해지면서 다양한 식물 군락이 형성되었다. 초본 군락은 흰겨이삭 - 큰조아재비 군락, 왕포아풀 군락, 김의털 군락 및 애기수영 군락이었고, 목본 군락은 덤불조팝나무 - 꼬리조팝나무 군락이었다. 군락에 따라 토양 미소동물 및 지표면 서식 절지동물의 군집 차이가 관찰되었다. 토양 화학성은 식물 군락에 따라 달랐으며, 이차적으로 다른 생물군에 영향을 주었다. 토양 선충은 같은 식성이라도 목 단위에서 다른 반응을 나타냈으며, 식물 섭식성 선충은 애기수영과 밀접한 관계를 보였다. Collembola나 Oribatida와 같은 미소절지동물의 밀도가 다른 것은 기질이 되는 유기물이나 미생물의 양이 식물 군락에 따라 다르기 때문인 것으로 추측된다. 지표면 서식 절지동물은 식물 군락별 군집 특성이나 종 수가 달랐다. 이것은 식생 구조와 구성이 절지동물의 다양성에도 영향을 준다는 것을 보여준다.

• 농촌지도와개발
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• 제25권3호
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• pp.121-133
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• 2018

In South Korea, a few kinds of social farming practice are identified: care farming, labour integration, and training in farming sector. Although social farming is not a prevailing activity in rural communities, it attracts much attention from a range of actors in society. In Hongseong-gun, from a few years ago, two farms began to care and employ the mentally disabled and to train young new comers who want to grow crops in the way of organic farming. Both of them are cooperatives, which were established by the residents want to participate in. These movement has made some changes in the community. And now, it became the well-known cases of social farming as well as multi-functional agriculture. Social farming can be described as a praxis to deterritorialize the units of agricultural production and the rural community, where food empires imposed their ordering principle upon units of agricultural production in order to appropriate the value added by farming.

• The Korean Journal of Ecology
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• 제24권4호
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• pp.239-243
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• 2001

One of the most important justifications of conservation of ecosystem and biodiversity is that diversity begets stability. Impact of biodiversity on community and ecosystem function has long been debated in science. Here we report the stability analysis of soil oribatid mite communities from environmentally stressed habitat(Namsan) and relatively well preserved habitat (Kwangreung) with the perspective of consistency as a primary criteria of stability. Stability of oribatid mite communities were evaluated with turnover rate, constancy analysis, b diversity index, and absolute abundance, abundance ranking, and the presence or absence of species over time. Out of 6 criteria, three consented that oribatid community from Kwangreung was more stable than that from Namsan. Those are turnover rate in litter layer, constancy analysis, and absolute abundance. Feasibility of stability analysis using oribatid mites was further discussed, rendering further study.

• The Plant Pathology Journal
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• 제38권3호
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• pp.203-211
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• 2022

Bacterial wilt, which is a major soil-borne disease with widespread occurrence, poses a severe danger in the field of tobacco production. However, there is very limited knowledge on bacterial wilt-induced microecological changes in the tobacco root system and on the interaction between Ralstonia solanacearum and fungal communities in the rhizosphere soil. Thus, in this study, changes in fungal communities in the rhizosphere soil of tobaccos with bacterial wilt were studied by 18S rRNA gene sequencing. The community composition of fungi in bacterial wilt-infected soil and healthy soil in two tobacco areas (Gengma and Boshang, Lincang City, Yunnan Province, China) was studied through the paired comparison method in July 2019. The results showed that there were significant differences in fungal community composition between the rhizosphere soil of diseased plants and healthy plants. The changes in the composition and diversity of fungal communities in the rhizosphere soil of tobaccos are vital characteristics of tobaccos with bacterial wilt, and the imbalance in the rhizosphere microecosystem of tobacco plants may further aggravate the disease.