• 제목/요약/키워드: Isoptera

검색결과 16건 처리시간 0.02초

국가재난형 동·식물 조기경보시스템을 위한 IOT기반의 포렌식 정책 연구 (A Study on IoT based Forensic Policy for Early Warning System of Plant & Animal as A Subsystem of National Disaster Response and Management)

  • 정호진;박대우
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2014년도 춘계학술대회
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    • pp.295-298
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    • 2014
  • 2000년 이후 한국에서 기후변화(아열대성 및 잦은 이상기온) 및 농축산물 수입개방에 따른 국내 고병원성AI, 구제역, 가축질병 5회 발생으로 3조8천억원 피해와 기유입 확산되는 재선충의 10여년간 공적 방제비 2천383억원이 투입되었다. 또한 유입 가능성이 높은 흰개미 등의 외래식물해충으로 국가의 경제 사회적 피해와 영향이 증가되는 실정이다. 본 논문에서는 FTA확대에 따른 농식물로 인한 국가경제피해에 대한 대응 가능한 농업 농촌분야에 사물(IoT) 기반의 국가재난형 동 식물위성조기경보체계 운용전략에 대한 연구와 정책 수립을 연구한다. 또한 국가적 재난의 피해발생과 책임소재에 대한 정부의 피해보상 및 법 제도적인 책임 수행의 사전 증거자료 수집과 사후 보상 근거로서의 포렌식 기술이 포함된 정책이 적용되는 방법을 연구한다.

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Phytochemical and Anti-Termite Efficiency Study of Guibourtia tessmanii (harms) J. Léonard (Kévazingo) Bark Extracts from Gabon

  • NKOGO, Ley-Fleury ELLA;BOPENGA, Christ Stone Arnaud BOPENGA;NGOHANG, Franck Estime;MENGOME, Line Edwige;ANGONE, Sophie ABOUGHE;ENGONGA, Prosper EDOU
    • Journal of the Korean Wood Science and Technology
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    • 제50권2호
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    • pp.113-125
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    • 2022
  • This study aimed to explore the biodiversity of chemical compounds found in the bark of Guibourtia tessmannii from Gabon, commonly called Kévazingo, and evaluate their anti-termite activity to determine their potential values as a source of development of anti-termite products that can be valued in the fields of fine chemicals and wood preservation. Extraction of G. tessmannii bark powders was carried out using the cold maceration method with trichloroethylene, acetone, ethanol, and water. Phytochemical screening made it possible to highlight groups of chemical families present in the extracts. Anti-termite activity was tested on the wild termites "Cubitermes sp" of the genus Isoptera. The yield of the extracts were 17.11% for the buttress and 13.42% for the height at 6 m. Phytochemical tests revealed that alkaloids, polyphenols, sterols, tannins, reducing compounds, flavonoids, saponins, and anthraquinones were present in the extracts. Results of anti-termite activity indicated that anti-termite activity varied with the different parts of the bark studied, extraction solvent, and concentration (50/50) and (25/75) of the extracts used. The extracts at 50/50 concentration showed a slightly better anti-termite activity compared to the 25/75 concentration. In addition, the buttress Kévazingo or buttress showed the strongest anti-termite activity for the aqueous extract with a survival rate of 0% after 2 days.

국내 흰개미(Reticulitermes speratus kyushuensis Morimoto)에 의한 토양의 화학적 특성 변화 (Changes in Chemical Property of Soil Affected by Termites (Reticulitermes speratus kyushuensis Morimoto) in Korea)

  • 성세하;김근기;홍창오;박현철
    • 한국환경과학회지
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    • 제26권6호
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    • pp.789-795
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    • 2017
  • Termites (Isoptera) are classified into approximately 3,106 species. In Korea, only one species has been identified, which is Reticulitermes speratus kyushuensis Morimoto. The termite, a social insect, is known to play an important role in nutrient cycling of the ecosystem, although some species of termites are well-known pests attacking wooden structures or any plant materials. However, there is a lack of research about termites in Korea, including aspects such the taxonomy, physiology, and ecology of termites. This study was carried out to provide valuable basic data on the ecological role of termites in an ecosystem in Korea for the future studies. For the experiments, soil and termite samples were randomly collected from Mt. Hwajang located in Jikdong-ri, Eonyang-eup, Ulju-gun, Korea between October 5 and 30, 2015. Analysis results showed that there were no significant differences in soil chemical properties between the soil samples just after air-drying and one year elapsed without any treatment. The treated soil with termites showed significantly higher than the soil without termite treatment. Chemical properties of total nitrogen, organic matter, available phosphate, pH, Calcium(Ca), Potassium(K) and Magnesium(Mg) in soil treated with termites were $1.11{\pm}0.3gkg^{-1}$, $43.3{\pm}12.4gkg^{-1}$, $27.4{\pm}2.9mgkg^{-1}$, $4.56{\pm}0.2$, $0.82{\pm}0.2cmol_ckg^{-1}$, $3.18{\pm}1.4cmol_ckg^{-1}$, $1.73{\pm}1.1cmol_ckg^{-1}$, respectively. The values of soil property of without termite treatment were $0.56{\pm}0.1gkg^{-1}$, $30.5{\pm}3.1gkg^{-1}$, $24.0{\pm}4.7 mgkg^{-1}$, $4.09{\pm}0.1$, $0.71{\pm}0.2cmol_ckg^{-1}$, $2.88{\pm}1.5cmol_ckg^{-1}$, $1.30{\pm}0.7cmol_ckg^{-1}$, respectively. These results suggest that inhabitation of termites could improve soil chemical properties in an ecosystem.

목조문화재의 원형보존을 위한 충해 방제방안 (Pest control managements for preservation of wooden cultural properties)

  • 이규식;정소영;정용재
    • 보존과학연구
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    • 통권21호
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    • pp.5-55
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    • 2000
  • The cultural properties are damaged by various causes according to the characteristics of material, the condition of preservation, and the period of time. Especially, biodeterioration makes lots of damages in organic properties than inorganic ones. The damages of wooden cultural properties by insects usually are caused by the three orders; Isoptera, Coleoptera, and Hymenoptera. As the result of investigation on the state of 141 buildings of wooden cultural properties in 1999, some of them were damaged by many kinds off actors; wasp, powder post beetle, cigarette beetle, termite, decay, and physical cracking. And it was found that the patterns of damages were related to species-specific habits of insects. There are several methods of pest control for the prevention of wooden cultural properties from damages caused by insects. Those are as follows; physical control, chemical control, biological control, and integrated pest management. When insects and fungi were detected at the wooden buildings, the fumigation is best treatment to stop biodeterioration. And then, wood materials also need to be treated with insecticidal and antiseptic chemicals to avoid a reinfestation, because the fumigant is volatile. The six commercial chemicals which are applied to the insecticidal and antiseptic treatment of wooden cultural properties were purchased to test their abilities. According to the comparative results of efficacy of them in laboratory, chemical D showed excellent efficacy in all items, including antiseptic and termiticidal items. The goal of these pest controls is to protect wooden buildings from insects and microorganisms. The most effective method used currently is chemical control(fumigation, insecticidal and anticeptic chemical treatment), but it has to be treated periodically to control pest effectively. Recently environmentally-friendly control methods such as bait system or biological treatments are replacing traditional barrier treatments using large amounts of chemicals. Especially, termite is a social insect which makes a colony. Although a building with fumigation treatment is safe for a while, once attacked building has a risk of damage by reinfestation of termite. Therefore, to control termites from damaged building, the entire colony including reproductives(queen and king) and larvae around buildings must beeliminated. Bait system can be used as a preventive measure in early detection of them through termites colony monitoring and baiting. It would be the most effective for termite control if bait system would be used together with the chemical controls.

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한반도 동부 농업생태계에 따른 지표배회성 무척추동물의 군집 특성 비교 (The Comparison of Community Characteristics of Ground-dwelling Invertebrates According Agroecosystem Types in the Eastern Region of the Korean Peninsula)

  • 안치현;오영주;옥숙미;이욱재;손수인;김명현;나영은;김창석
    • 한국응용곤충학회지
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    • 제56권1호
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    • pp.29-39
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    • 2017
  • 농업생태계에 따른 지표배회성 무척추동물의 군집 특성을 비교하기 위하여 한반도 동부의 3개 행정권역내에 분포하는 논, 밭, 과수원을 대상으로 선정하였다. 2013년부터 2015년까지 매년 2회에 걸쳐 pit-fall trap법을 사용하여 채집된 무척추동물을 통해 군집분석을 하고 기상자료를 포함하는 환경요인의 영향을 분석하였다. 전체 채집된 무척추동물은 13목 58과 172종 6,420개체이며, 분류군 중에서 벌목(38.26%), 메뚜기목(16.28%)이 우점하였다. 경상남도 출현 개체수가 2,983개체(46.46%)로 가장 많았으며, 경상북도가 풍부도(1.96), 다양도(1.51) 모두 높게 나타났다. 농업생태계 유형 중 논에서 69종 3,299개체(51.39%)가 조사되었으며, 종다양성 지수도 높게 확인되었다. 특히 우점종인 개미과의 포함유무가 종 다양성지수 분석에 미치는 영향은 미미한 것으로 보여진다. 곤충 분류군과 환경요인과의 정준상관분석 결과, 토양 pH, 토양온도와 토양함수율의 영향에 의해 매미목, 바퀴목, 흰개미목, 딱정벌레목과는 양의 상관관계로 구분되었고, 기온, 강수량, 전기전도도, 상대습도, 최저초상온도와는 음의 상관관계를 나타냈다. 무척추동물 군집은 계층적 군집화를 통해 생태계 유형별로 패턴화가 일어나는 것으로 확인되었다. 이러한 결과는 공간과 환경요인과의 상관관계가 무척추동물의 분포에 다소 영향을 주는 것으로 사료된다.

공단지역과 비공단지역내의 삼림에 서식하는 토양미소절지동물 분포의 비교 (Comparison of Distribution of Soil Microarthropoda in the Forests of Industrial and Non-industrial Complex Areas)

  • 조삼래
    • The Korean Journal of Ecology
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    • 제22권1호
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    • pp.1-6
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    • 1999
  • 공단지역과 비공단지역의 삼림에서 토양미소절지동물의 개체군 밀도, 수직 및 계절적 분포 그리고 토양산도와의 관계를 비교 조사하였다. 조사지역 토양에서 관찰·분리된 토양미소절지동물은 총 3950개체 이었으며, 그 중 제일 많은 개체수는 거미강으로 총 1,918개체로 전체 의 약 48.5%를 차지하였다. 체장이 가장 길은 곳은 칠갑산의 낙엽수림이며(113.6 mm), 가장 짧은 곳은 대산지역의 낙엽활엽수림지역이었다(46.8 mm). 토양소동물의 개체수는 봄에서 여름에 걸쳐 증가하였고, 가을과 겨울로 갈수록 감소하는 추세를 보였다. 계절에 따른 수직분포상황은 전체적으로 봄에는 중층부에서 많이 나타났고 여름과 가을은 상층부에서 그리고 겨울은 하층부에 많이 분포하는 것으로 나타났다. 종다양도지수는 비공단지역(1.02)이 공단지역(0.73)보다 높았고 가장 높은 곳은 계룡산 침엽수림의 중층(5∼10 cm)에서 1.60이었고, 가장 낮은 곳은 대산 낙엽수림의 심층(10∼15 cm)에서 0.24로 나타났다.

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