• 한국산림과학회지
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• 제90권3호
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• pp.257-265
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• 2001

리가다소나무 조림지의 벌채수준에 따라 토양에 서식하는 토양미소절지동물의 분포상에 대하여 조사하기 위하여 1998년 5월부터 1999년 4월까지 조사한 결과는 다음과 같다. 1. 조사기간동안 토양미소절지동물은 총 7강 21목 181,904개체가 채집되었으며, 이들의 구성은 거미강(Arachnida), 곤충강(Insecta), 연갑강(Malacostra), 소각강(Pauropoda), 노래기강(Diplopoda), 지네강(Chilopoda), 애지네강(Symphyla)이었다. 2. 조사기간내 채집된 토양미소절지동물은 대조구에서 82,9627개체, 잔존구에서 62,688개체, 벌채구에서 36,254 개체로 대조구는 벌채구에 비하여 2배 이상 채집되었다. 3. 벌채로 인한 영향은 응애목이 비교적 심하여, 벌채시 응애목과 톡토가목의 밀도가 모두 감소하나, 특히 응애목의 감소율이 높아 벌채구에서는 톡토기목의 비율이 상대적으로 높아진다. 4. 토양미소절지동물의 군집구성비는 거미강이 59.74%(108,678개체)로 가장 높은 개체수 밀도를 보였으며, 곤충강이 39.82%(72,427개체)로 나타나 이들 2군의 합계가 99.56%(181,105개체)로 절대적인 우위를 보였다. 5. 거미강에서는 응애목이 전체의 99.18%, 곤충강에서는 톡토기목이 93.99%로 가장 높은 개체수 밀도를 나타냈으며, 전체동물군에서도 응애목(59.25%), 톡토기목(37.42%)의 분포비율이 96.67%로 가장 높았고 벌목 0.95%, 파리목 0.64%, 앉은뱅이목 0.39%의 순이었다. 6. 계절에 따른 토양미소절지동물 군집분포는 7월에 최저를 기록하고 점차 증가하여 가을철인 11월에 가장 높은 밀도를 나타냈으며, 겨울철로 갈수록 점차 감소하는 경향을 보이다가 봄철인 4월에 다시 증가하는 경향을 나타내고 있다.

• 한국환경복원기술학회지
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• 제19권6호
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• pp.1-17
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• 2016

The study was aimed to understand the ecological status of the Maebongsan urban forest in Cheongju-si through investigating the vegetation, soil characteristics, and soil microarthropods. Phytosociological analysis for twenty plots revealed that the plant communities were classified into Pinus rigida community, Robinia pseudoacacia community, Castanea crenata community, Quercus acutissima community, Pinus strobus community, Pinus koraiensis community, and Larix kaempferi community. The importance value showed that afforestation tree species like Castanea crenata, Robinia pseudoacacia, and Pinus rigida dominate the urban forest. DBH analysis indicated that although the plant communities seem to be under the succession to Quercus forest, the dominance of Castanea crenata and Robinia pseudoacacia might still persist for several more decades. The properties of soils from the plant communities showed that loamy sand and sandy loam in soil texture, low organic matters, and severe acidification. The abundance of soil microarthropods were not different among the plant communities except Castanea crenata community and Pinus koraiensis community. The two communities showed especially low abundance of collembola and acarina. Thus, we can say that Castanea crenata community and Pinus koraiensis community seem to have been influenced strongly by anthropogenic activities.

• Journal of Ecology and Environment
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• 제33권4호
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• pp.317-323
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• 2010

Nutrient availability is a critical component of agroecosystems, and is relevant to both above- and below- ground interactions. The principal objective of this study was to determine how the cessation of fertilization affects the communities of weeds and soil organisms in a corn/wheat field. Changes in dominant weed species, substrate-induced respiration, and the population density of nematodes and microarthropods were evaluated. Microbial substrate-induced respiration (SIR) and the population density of microarthropods decreased following the cessation of fertilization and were partly correlated with the aboveground weed biomass. The cessation of organic fertilizer application but continuing application of inorganic fertilizer reduced the population density of nematodes. In response to the cessation of fertilization, weed communities were dominated by species with little dependency on fertilization. Amaranthus retroflexus was identified as the most dominant species in the corn field; however, it was replaced by Digitaria ciliaris after the cessation of fertilization. In the wheat field, the cessation of fertilization led to a rapid reduction in the biomass of most weeds, except for Vicia angustifolia, supposedly as the result of symbiotic nitrogen fixation. Additionally, the fact that weed biomass was partially correlated with SIR or the population density of microarthropods may reflect a mutual feedback between soil organisms and weeds. The results indicate that the cessation of fertilization alters communities of weeds and soil organisms through changes in weed biomass and interactions with symbiotic microorganisms.

• The Korean Journal of Ecology
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• 제15권1호
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• pp.67-73
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• 1992

This study was carried out to investigate the effects of soil improver on the population density and composition of microarthropods in the upland which cultivated pepper consecutively. We have treated soil improver sucf as zeolite, compost, ca, sio2 , and integrated improvement i. e. treated zeolite, compost, ca, and deep cultivate ; 20 cm. We sampled soil to collect soil microarthropods from a week to 15 months after treament at each site by soil-corer and extracted 48 hours in berlese- tullgren funnel. We have classified 16 families, 35 species diversity index of soil microarthropods are highe in the integrated improver and compost site than those found in any other sites. We suggest that soil improvement effrcts of integrated improved site are influenced by compost.

• 환경생물
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• 제27권3호
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• pp.272-278
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• 2009

농생태계 인삼 경작 재배지에서 서식하고 있는 토양 생물상을 확인하기 위하여 전라북도 진안 6개 조사구의 인삼 재배 농가에서 조사하였다. 2008년 4월 부터 11월까지 채집하여 분류된 미소절지동물은 총 3,101개체였다. 이중 응애류 44.9%, 톡토기 50.1%, 기타 5.0%로 가장 많은 개체수가 출현한 장소는 분변토를 시용한 대조구, 4년근 순으로 나타났으며 월별 밀도소장은 4월, 5월 6월 순이었으며 7월, 8월은 낮은 밀도를 보였다. A/C 비율은 0.90으로 톡토기가 응애보다 비율이 높았다. 토양의 화학적 요인과 개체군 밀도소장과의 유의성은 확인되지 않았다. 토양미생물의 분포 중 방선균은 6월부터 11월까지 월평균 $0.3{\sim}0.9{\times}10^6\;cfu\;g^{-1}$ 정도를 나타냈으며 8월과 9월에 가장 높았다. 곰팡이는 각 조사지점별 일정한 증감의 경향을 나타냈으며 8월과 9월에는 1~2배 정도 곰팡이의 수가 감소하는 경향을 보였다. 세균의 분포는 조사기간별 평균 $1.1{\sim}9.6{\times}10^6\;cfu\;g^{-1}$ 정도이었으며, 6~8월이 8월 이후보다 세균의 수가 더 많은 것으로 조사되었다. 각 조사지점별 일정한 경향을 보인 형광균의 분포는 조사 시기 초기에는 감지되었으나 7월 이후에는 분포가 나타나지 않았다.

• 한국응용곤충학회지
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• 제21권1호
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• pp.1-7
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• 1982

This study was conducted to describe unrecorded five species of thrips from leaf litter and dead wood in Korea. Described three species of Elaphrothrips 1,2,3, Podothrips sasacola and Pentagonothrips antennalis are for the first time in Korea. Specimens of thrips were collected in the area of Suweon, Jeju-Do., Mt. Seolag and Mt. Jiri in Korea, during the period from 1980 to 1981.

• 한국응용곤충학회지
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• 제28권4호
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• pp.210-220
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• 1989

H.J. Andrews Expt. Forest의 토양절지동물의 분포상을 조사한 결과 Coleoptera가 14과 41종으로 우점군임이 밝혀졌으며, 토양응애는 6과 7종의 분포가 확인되었으며 Typhlodromus, Gymnodamaeus, Phauloppia 및 Scleroribates 등은 계절변동 없이 발생하고 있음이 알려져 구북구계의 발생생태와 차이가 있었다. 기타 곤충군의 발생은 Collembola 4과 16종, Psocoptera 4과 4종, 식균성 총채벌레 3과 16종, Hemiptera 1과 1종, Diptera 3과 6종, Hymenoptera 1과 10종이었다. 산림토양의 절지동물은 산림생산단계의 1차 분해자로 중요한 역할을 수행하며, 부식절이 풍부한 토양조건은 무식생구에 비하여 종다양성은 낮으나 안전도가 높게 나타나 재생산의 주요인자로 해석된다.

• 한국응용곤충학회지
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• 제35권4호
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• pp.280-286
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• 1996

이 논문은 제주도의 산굼부리에서 채집된 날개응애 4 신종을 기재하였다. 신종은 산굼부리소매응애(Brasilobates sangumburiensis sp. nov.), 털보곰보응애(Xenillus multisetosus sp. nov.), 탐라공검둥이응애(Nippobodes tamlaensis sp. nov.), 제주공검둥이응애(Nippobodes chejuensis sp. nov.)이다.

• The Korean Journal of Ecology
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• 제12권3호
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• pp.191-202
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• 1989

This study was carried out to investigate the relationship between soil mites(Acarina:Cryptostigmata) and vegetation in sampled area. From July 1984 to June 1985, samples were taken monthly from coniferous forests; a pinenut (Pinus koraiensis S. et Z.) forest (site C-1), a whitepine(Pinus strobus L.) forest (site C-2), a needle fir tree(Abies holophyla Max.) forest (site C-3), and three broad-leaved forests; site B-1, B-2, and B-3 in Cholanamdo province, southerm part of Korea. Vascular plants of 152 species belonging to 115 genera (53 families) were identified. The flora in the coniferous forests were more diverse than in the broad-leaved forest. Similarity coefficient to the flora was shown highly between the neighbouring sites. The oribatid species in the coniferous forests were more diverse than those in the broadleaved forests. The similarity index suggested that oribatid mites in those surveying sites could be divided into "coniferous forest type" and "broad-leaved forest type".d forest type".uot;.

• 한국유기농업학회지
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• 제6권2호
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• pp.75-80
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• 1998

Organically cultured rice fields were surveyed to compare the population density and the structure of microarthropod communities between chemically controlled and un-controlled fields. In rice fields, microarthropod communities were also compared among four treatments based on different input of fertilzer : 1)No fertilizer, 2)Chemical fertilizer(N-P2O5-K2O = 11 - 7 - 8 kg/10a, 3) Compost (5,000kg/10a), 4) Compost com-plemented with chemical N. Richness index of microarthropod communities in rice fields was greater in the chemically uncontrolled field than controlled field. Within field. the compost plot had greater value of richness index for microarthopod commuities than the non-fertilizer polt. A total of 9 aquatic insects species were identified in the water of organic farming rice field the population density was found to be higher in the compost plot than the other plot. The population of insect pests was found to be high in the late stage of plant whereas the population of insects was high in the early stage of rice plant.