• 한국농림기상학회지
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• 제4권2호
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• pp.127-132
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• 2002

All the countries in RA II (Asia Region in WMO) welcome the establishment of a Web site dedicated to agricultural meteorology, because it is believed that the best way to improve and speed up the flow of information is the use of the Internet and the establishment of a Web site. In providing recommendation for the promotion and improvement of the AgroMeteorological service in RA II, a couple of key suggestions were proposed: (a) Exchanges of data and AgroMeteorological knowledge between member countries and between RAs, (b) Exchanges of experts between member countries as a necessary way to share the knowledge, and (c) Joint research between member countries to solve common problems in AgroMeteorological affairs. In order to meet the above requirements for RA II, an AgroMeteorological information network will be the most critical and dynamic aspect in sustainable agriculture in this region. In addition, the establishment of a Core AgroMeteorological station, recommended by CAgM of WMO, will require its own information sharing systems for communication among member countries. Inevitable use of information technologies (IT) such as information networks, databases, simulation models, GIS, and RS for regional impact assessment of environmental change on AgroEcosystem will be enforced. Thus, the regional Internet-based Agrometeorological information network has been in place since 1999, though all contributions to it have been volunteered by individuals, institutes, universities, etc.

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2011년도 학술발표회
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• pp.32-32
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• 2011

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2011년도 학술발표회
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• pp.35-35
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• 2011

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2015년도 하계 학술발표논문집
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• pp.40-44
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• 2015

• 환경생물
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• 제25권2호
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• pp.88-93
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• 2007

2006년 5월부터 10월까지 국내 농생태계 49지점에서 탐색 수집된 지렁이는 3과 5속 15종 1,846 개체이며 종 구성은 다음과 같다. Amynthas agrestis 20.9%, Amynthas koreanus 20.3%, Amynthas heteropodus 15.4%, Amynthas sp. 8.7%, Drawida japonica 8.0%, Eisenia fetida 7.2%, Amynthas hilgendorfi 7.0%, Bimastos parvus 3.2%, Amynthas hupeiensis 2.5%, Aporrectodea caliginosa 1.8%, Amynthas corticis 1.8%, Aporrectodea tuberculata 1.3%, Eisenia andrei 1.2%, Amynthas sp.20.4%, Amynthas sp. 1 0.3%이다. 종 조성 비율을 보면 이와 같이 왕지렁이속, A. agrestis, A. koreanus, A. heteropodus 3종이 차지하는 개체수는 1,046개체로 전체의 약 56.7%를 차지하는 우리나라 농생태계의 우점종 이다. 성숙 개체와 미성숙 개체의 비율은 1.25:1로 성숙된 개체가 더 많이 출현하였다. Amynthas sp. 1, Amynthas sp. 2는 본 조사를 통하여 처음으로 확인되는 신종 후보로, 여러 외부형질, 특히 malepore의 형태가 지금가지 국내에서 기록된 다른 왕지렁이속에 속하는 종들과는 확연히 구별되는 특징을 갖고 있다.

• 한국환경복원기술학회지
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• 제16권5호
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• pp.19-26
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• 2013

This study was carried out to provide preliminary data for increasing biodiversity in agricultural ecosystem and investigate availability of using Tubificidae spp. for environment-friendly agriculture through the survey of growth of Tubificidae spp. in flooded paddy fields during winter. We estimated the number of Tubificidae spp. in rice paddy where had been flooded during the previous winter in Ganghwa-gun, Suwon-si, and Hwaseong-si (Bongdam-eup and Paltan-myeon) between March and April from 2010 to 2012. During growing period of rice, the number of Tubificidae spp. was compared between flooded and non-flooded paddy field in Ganghwa-gun. As results, mean density of Tubificidae spp. in winter flooded paddy field was 7,235.5 $ind./m^2$ in Ganghwa-gun, 14,347.5 $ind./m^2$ in Suwon-si, 59,989.9 $ind./m^2$ in Bongdam-eup, and 2,610.6 $ind./m^2$ in Paltan-myeon. Mean density of Tubificidae spp. was the highest in flooded paddy fields of Bongdam-eup that was kept wet until rice harvest time and had shallow water. While mean density was the lowest in Paltan-myeon where had deep water and later flooded paddy field than others. In Ganghwa-gun, during growing period of rice, mean density of Tubificidae spp. in flooded paddy fields (171,109.0 $ind./m^2$) and flooded fallow paddy fields (321,084.2 $ind./m^2$) was much higher than non-flooded paddy fields (1,006.6 $ind./m^2$). Flooded paddy field during winter can help increase the number of Tubificidae spp. which can control weeds and enhance biodiversity in paddy fields for environment-friendly agriculture. Early flooding and shallow water of paddy fields could be a good agriculture practice to encourage the growth of Tubificidae spp..

• 한국환경복원기술학회지
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• 제16권1호
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• pp.147-157
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• 2013

Rice is a main crop and rice field is the most important farmland in Korea. This study was conducted to propose the methodology assessing impact and vulnerability on rice production by climate change at the regional and national level in Korea. We evaluated a vulnerability of rice paddy according to the outbreak of a main disease and pest of a rice plant. As results, Jeju-do, Gyeongsangnam-do, and Jeollanam-do were more vulnerable area than others. In contrast, the southern central region including Gyeonggi-do was less vulnerable than others. The vulnerable index was significantly higher in 2050s (0.5589) than in present (0.3500). This result showed that the vulnerable to the disease and pest enlarge in the future. The adaptive capacity highly contributed to the vulnerability assessment index. The daily maximum temperature of June and the daily average temperature from May to August also contributed the climate exposure index. The area of occurring sheath blight, rice leaf blast and striped rice borer was related to the system sensitivity index. The ability of water supply (readjustment area of arable land per paddy field area) and rice production technique (rice yield per hectare) were the highly contributed variables to the adaption capacity index.

• 한국농림기상학회지
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• 제17권3호
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• pp.236-247
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• 2015

국내 영농과 영림은 최근 지구 온난화를 비롯한 환경 변화와 더불어 급격한 경제 사회적 변화로 인해 어려움을 겪고 있고 이를 극복하기 위한 열쇠로 "지속가능성"이 검토 되고 있다. 본 연구를 통해 지속가능한 영농 영림을 위한 국내외의 다양한 접근 방법들을 살펴본 결과 1) 지표접근법, 2) 계정접근법, 그리고 3) 생태학적 접근법을 통해 지속가능한 영농 영림 지수 등의 연구개발이 활발히 진행되고 있음을 확인할 수 있었다. 그러나 국내에서는 아직 생태학적 접근법을 통한 지속가능한 영농 영림 관련 연구를 찾기가 쉽지 않다. 이에 대한 연구는 그간 기후변화에 대응하여 기상청 농촌진흥청 산림청 등에서 확보한 영농 영림 기상 및 생태자료와 특히, 지난 10여 년간 농경지와 산림에서 플럭스 관측을 통해 확보하고 있는 대기-생태계간 에너지, 물 및 이산화탄소 교환량 데이터를 기반으로 수행될 수 있다. 국제 사회의 노력에 발맞춰 지속가능한 영농 영림을 위한 연구 역량을 충분히 구축할 수 있도록 하기 위해 단계별 연구 추진을 제안한다.

• 한국토양비료학회지
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• 제45권6호
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• pp.1179-1186
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• 2012

For better understanding of carbon cycle dynamics of an agro-ecosystem, an accurate assessment of seasonal and daily $CO_2$ flux is essential to understand the relationship between various environmental factors and crop productivity. We developed the automatic sliding canopy chamber (ASCC) system that measured continuous net ecosystem productivity (NEP) over whole growing season under the natural meteorological rhythm. The ASCC was composed of two main parts which were sliding part for measuring NEP, and automatic opening and closing chamber (AOCC) for measuring soil respiration (SR) on the soil surface. The ASCC was developed by using open flow method for measuring soil $CO_2$ efflux. The disturbance of natural meteorological condition was minimized by opening the base frames. In the field test with barley (Hordeum vulgare L.), NEP was calculated at $140mg\;CO_2\;m^{-2}h^{-1}$ on a clear day using continuous data and eliminated the possibility of overestimate about 16% using one hour data during the day time. Unlike other small scale chamber system, installation on cropping-field made it possible to take any modifications which might be caused by natural environmental condition.

• 한국기후변화학회지
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• 제5권1호
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• pp.71-81
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• 2014

미기상학적 방법인 에디공분산 기법을 이용하여 벼-보리 이모작의 논 생태계와 대기간 $CO_2$ 교환량의 계절적 변화를 조사하고, 벼-보리 이모작 작부체계에서 벼 재배기간의 $CO_2$ 교환량에 미치는 환경요인들과 지상부 생육량의 효과를 분석하였다. 관측된 $CO_2$ 플럭스자료는 보정과 결측 보충 등의 과정을 거친 후 분석에 활용되었다. 벼-보리 이모작 논 생태계에서 벼 재배기간 동안의 $CO_2$ 순 생태계 교환량(NEE)과 총일차생산량(GPP) 및 생태적 호흡량(Re)은 각각 단위면적($m^2$)당 -215.6, 763.9, 548.3g C로 분석되었다. 순복사에너지(Rn)와 NEE의 관계는 이차함수로 나타낼 수 있으며, Rn의 이차함수는 NEE 변이의 66%를 설명하였다. 반면에 Re와 지온의 관계는 지수함수로 나타낼 수 있으며, 벼논이 배수생태에서는 Re에 대한 지온의 지수함수는 Re 변이의 43%를 설명하였다. 그리고 벼 작물의 지상부 생육량과 논 생태계의 $CO_2$ 플럭스(NEE, GPP, Re)는 유의성 높은 선형관계를 나타냈다. 따라서 환경인자 및 벼 작물 생육자료와 $CO_2$ 플럭스의 관계식으로 미 관측 논 생태계에 대한 $CO_2$ 플럭스의 추정이 가능할 것으로 판단되었다.