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For the purpose of contribution to wild birds protection, distribution characteristics and ecological breeding habits were surveyed in Mt. Chiri from October 1989 to October 1991 by the use of the nestboxes installed in four study sites by the altitude. 1. The census of birds of 80 species, 27 family, 9 order of birds recorded in Mt. Chiri. 2. In the inhabitation structure of birds by altitude, Fringilla montifringilla were the dominance (18.29%) among the survey area. 3. The nestboxes(66.5%) were mainly used by the smal birds, Parus sp. and sitta europαea. 4. The utilization rate of tile nestboxes were showed 64% at 500m, 78% at 900m, 76% at 1,450m, 48% at 1,750m above the altitude, respectively. 5. The breeding rates of birds in the nestboxes were showed from 6% to 46% by altitude. Parus varius were the highest breeding species in the surveyed area. 6. Food items of the chicks of the 5 species collected by the coiler method were animal matters : 91.3% of the food were forest insects such as Phalera asiimilis and Pleuroptya batteata except 8.7% of spiders.
This study was conducted to investigate the distribution of wildbird at campus in Chungnam National University. The survey was carried over 5 districts by line transect method from May, 1999 to April 2000, The observed birds were 7 orders 21 families 46 species and 3,057 individuals, these consist of 25 species for residents, 12 species for summer visitors, 5 species for winter visitors, and 4 species for passage migrant. The average density of birds was 12 ea/ha, and main dominant species was Pica pica, Paradoxornis webbianus, Parus major, Aegithalos caudatus, Ixos amaurotis in order. Species richness of bird community showed a maximum value in spring, but density showed a maximum value in winter. Breeding bird community in study area were mainly predominated by hole-nesting guild, canopy-nesting guild and canopy-foraging guild. For the protection of wildbirds at campus, it needs to plant bushes around trails and to control users. Artificial food, water station and artificial nest are needed for the habituation of wildbirds.
Birds observed in Baekryeongdo from Oct. 18 to Oct. 20, 2007 were 4503 individuals in 11 orders, 28 families, and 59 species. The most dominant species was Anas poecilorhyncha (1721 individuals) representing 38.22%, followed by Anser fabalis (859 individuals) with 19.08%, Larus crassirostris (232 individuals) with 5.15%, Aegithalos caudatus caudatus (193 inviduals) with 4.29%, and Aythya fuligula (157 individuals) with 3.49%. The species diversity (H') was highest, 2.61, in D area where the species richness (Da) was lowest. Species richness (Da) was 4.54 in E area and 4.38 in A area while species diversity (H') was lowest, 1.77 in E area and 1.76 in A area. This study found 9 species that were legally protected.
본 조사는 홍도의 조류 보호를 위한 종합적인 보호 계획을 수립하기 위한 연구의 일환으로 수행되었다. 홍동에서 가장 우점종은 팽이갈매기이며, 1996년에 10,000쌍 이상이 홍도에서 번식하였다. 홍도에서 팽이갈매기를 제외한 조류상은 총 37종 277개체가 관찰되었으며, 이번 조사에서 홍도는 많은 이동 철새들에게 중간 기착지로서의 중요한 역할을 하고 있음이 밝혀졌다. 홍도는 1996년 8월 1일부터 무인등대로 전환되어 이 곳을 관리하는 사람이 없게 되기 때문에, 앞으로 홍도에 서식하는 조류들은 낚시나 사진촬영, 그리고 방문객들에 의한 알 채취 등, 인간의 방해활동에 의해 더 많은 피해를 받게 될 것으로 예상된다. 또한 최근에 등대지기에 의해 섬에 도입된 염소와 고양이 등도 이 지역의 생태계에 큰 영향을 미칠 것이다. 그러므로 홍도의 조류를 보호하기 위한 대책 마련이 시급한 실정이다. This study was carried out as part of a project for the comprehensive conservation plan for birds living on the Hong islet. On the Hong islet, the most dominant species is the Black-tailed Gull. Over 10,000 pairs of the Black-tailed Gull bred there in 1996. Excluding the Black-tailed Gull, a total 37 species, 277 individuals, were observed. The islet is used as a stopover site of many passage migrants. As the lighthouse on the Hong islet will not be controlled by a lighthouse keeper, who is responsible for the islet management, any more, but it will be controlled by an automatic system from 1st August 1996, it is worried that many birds may be more vulnerable to human disturbances, such as fishing, photographing or collection of eggs by visitors, than before. In addition, goats and cats recently introduced to the islet by a lighthouse keeper are also a threat to the ecosystem. A comprehensive conservation plan is urgent.
Birds observed in the Gyeongju National Park in April and July, 2007 were 1,508 individuals in 11 orders, 32 families, and 60 species. The most dominant species was Passer montanus (250 individuals) representing 16.58% of the total, followed by Paradoxornis webbianus (157 individuals) accounting for 10.41%, Hirundo rustica (91 individuals) with 9.35%, Egretta garzetta (92 individuals) with 6.10%, Pica pica (91 individuals) with 6.03%, and Streptopelia orientalis (78 individuals) with 5.17%. Spring research found that Namsan area showed the highest species diversity (H'), 3.05, and species richness (Da), 6.82. In summer research, Tohamsan area showed the highest species diversity, 2.97, and richness, 5.23. This study found five species that were legally protected.
Water chemistry and fish community, based on fish compositions and ecological characteristics(trophic/tolerance guilds and condition factor), were compared in Gucheon Reservoir(GcR) and Yeoncho Reservoir(YcR). Chemical parameters of water quality such as BOD, COD, nutrient(N, P) and suspended solids indicated that water quality was better in the YcR than GcR, and the temporal variability in seasonal and interannual patterns were greater in the YcR. The greater variability was mainly attributed to intense dilutions of reservoir water by Asian monsoon rain during July–August. Fish guild analysis indicated that species diversity was higher in the GcR than the YcR, and that the proportion of tolerant and omnivore species were greater in the YcR. Regression analysis of body weight-total length showed that the regression coefficient(b value) was lower in the GcR(2.15 ~ 2.40) than the YcR(2.59 ~ 3.14). Condition factor(K) of fish against the total length showed negative slope of Zacco temminckii, Carassius auratus, Pseudorasbora parva and Rhinogobius brunneus population in the GcR, and a positive slope of Carassius auratus and Rhinogobius brunneus population in YcR. Overall, our data suggest that the growth of the fish populations, based on the length-weight relations and condition factor, reflected the trophic regime of nutrients and organic matter.