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      • SCOPUSKCI등재

        몇가지 환경요인이 돼지풀의 종자발아에 미치는 영향

        김종홍,김원희,차승희 한국생태학회 2002 Journal of Ecology and Environment Vol.25 No.2

        돼지풀(Ambrosia artemisiifolia var. elatior D/sub ESCOURTILS/)종자의 발아를 유발시키는 몇가지 환경요인의 영향을 조사한 결과는 다음과 같다. 종자의 휴면은 온도와 토양함수량이 적절하면 채종직후에도 일부분 타파되었고, 주야의 변온(30/20℃)이 휴면타파에 효과적이었다. 온도에 따른 발아율은 12℃∼32℃의 온도처리구에서 모두 발아가 이루어졌고, 발아에 필요한 최적온도는 24℃였다. (P<0.01). 토양함수량의 영향은 30% 처리구에서 증가하기 시작하여 60% 처리구에서 최대치를 나타내고 (P<0.05) 80% 처리구에서 다시 감소하는 경향을 나타내었으며, 토양함수량 7% 처리구에서는 전혀 발아가 이루어지지 않았다. 온도에 대한 광의 영향은 24℃의 온도 처리구에서 광처리시와 암처리시 가장 높은 발아율을 나타내었고, 광의 존재유무에 따른 발아율의 차이는 뚜렷하지 않았다. (P>0.05). 채종시기간에는 9개월 저장기간의 어떤 시기에도 종자의 발아에 특별한 영향을 나타내지 않았다. (P>0.05). 온도상승구(IT)에서 돼지풀종자는 16℃에서 발아하기 시작하였고 온도가 상승함에 따라 발아율이 점차 증가하여 최종발아율은 99.34%에 이르렀다. 반면에 온도하강구(DT)에서는 20℃에서 처음발아가 시작되었으며(1.34℃)에서 5.34%의 최종발아율을 나타내었고, 온도가 하강함에 따라 2차 휴면이 유도되었다. 저온에 의한 종자의 휴면타파가 고온에 의한 휴면타파보다 더 많이 유도되어, 돼지풀 종자는 늦가을에도 발아가 이루어지나 그 다음해 봄에 대부분의 종자발아가 이루어질 것으로 생각되어진다. 이와 같은 돼지풀종자들 내의 발아습성의 변이가 다양한 환경변화에 대해 자신의 생존과 자손의 번식을 위한 생리적·생태적 전략임을 알 수 있었다. In order to analyze the life cycle of A. artemisiifolia var. elation dormancy and some environmental factors inducing germination of the seeds were examined. The results were as follows : Dormancy of fertile seeds was broken in part within a month after seed collection in case of adequate moisture and alternating temperature was also effective in breaking dormancy. The temperature range, which allow germination was 12℃ ∼ 32℃. Optimum temperature for germination was 24℃. The seed of A. artemisiifolia var. elatior was light-independent. The difference of storage period appeared to have no particular effect on the viability of seeds at any time during the 9-month storage period. In the increasing temperature(IT) regime, A artemisiifolia var. elatior seeds started to germinate at 16℃, showing the higher temperature the greater germination rate, the final germination percentage was 99.34%. On the other hand, in the decresing temperature(DT) regime, seeds began to germinate at 20℃ with the 1.34% germination. An induced dormancy occurred at 12℃ making the 5.34% fecal germination in the DT regime. Low temperature was more effective to break dormancy than higher temperature Seeds of A. artemisiifolia var. elatior seems to be germinated in mid to late autumn or germination delayed until following spring. The above results suggest these variation of germination response in diverse environmental factors seems to be a physiological strategy to maintain their existence and to reproduce in the extreme thermal variation.

      • SCOPUSKCI등재

        백두산과 북한의 상록활엽수

        김종홍,윤경원 한국생태학회 1998 Journal of Ecology and Environment Vol.21 No.5

        This study was carried in Mt. Paektu on the border between North Korea and China. The dominant communities of evergreen broad-leaved trees were Rhododendron aureum community, Dryas octopetala var. asiatica community, Rhododendron redowskianum community and Phyllodoce coerulea community. The evergreen broad-leaved trees investigated consist of a total 34 taxa : 4 forms, 16 varieties, 14 species, 10 genera, 5 families in Mt Paektu and North Korea(in literature). The soil organic matter and available phosphorus were different according to plant community and altitude.

      • 東川과 伊沙川의 水生管束植物區系와 分布

        金琮鴻,鄭泳喆 순천대학교 기초과학연구소 1991 基礎科學硏究誌 Vol.2 No.-

        A study on the flora and distribution of aquatic vascular plants in Dong Cheon and Isa Cheon was conducted as the part of the project for the investigation on ecosystem of streams inflowed into Suncheon bay, on eleven stations, Cheonnam from May 1990 to May 1991. As a results, 13 species of hydrophytes were identified; Marsilea quadrifolia, Salvinia natans, Ceratophyllum demersum, Trapa japonica, Myriophyllum verticillatum, Oenanthe javanica, Urticularia japonica, Sagittaria aginashi, Hydrilla verticillata, Potomogeton natans, P. crispus, Spirodela polyrhiza, Scirpus triqueter. And 31 species of hygrophytes and 36 kinds of water side plants were collected. Life from of hydrophytes and hygrophytes divided into four categories, 1)submerged species-Ceratophyllum demersum, Myriophyllum verticillatum, Hydrilla verticillata, Potomogeton crispus, 2) free-floating species-Salvinia natans, Trapa japonica, Urticularia japonica, Spirodela polyrhiza, 3) floating-leaved species-Potomogeton natans, and 4)emergent species-Persicaria amphibia, Persicaria thunbergii, Hydrocotyle maritima, Oenanthe javanica, Lobelia chinensis, Sagittaria aginashi, Phragmites communis, Zizania latifolia, Scripus triqueter, Fimbristylis dichotoma. The flora of aquatic vascular plants investigated in Dong Cheon and Isa Cheon streams was 33 families, 59 genera, 71 species, 7 varieties in total 78 taxa. Most of the hydrophytic species distributed in a few sites, but ruderal plants that appeared on water side had wide distributioinal range.

      • 보성강댐 수계의 어류상에 관한 생태학적 연구

        김종홍,한원동,이완옥,이진원 순천대학교 기초과학연구소 1994 基礎科學硏究誌 Vol.5 No.-

        The fish communities were investigated at nine sites of the Posong dam area from March 1992 to June 1994, and compared previously reported fish fauna, and studied ecologically. The fish fauna of the Posong river was classified 58 species belonging to 36 genera and 15 families, and that of the Posong dam area was classified 40 species belonging to 27 genera and 9 families. In the Posogn river, dominant species were Zacco platypus, Z. temminckii, Acheilognathus intermedia and A. koreensis in the number of individuals. Site 4 and site 9 were abundant in species. Community similarity of the Posong river and the Isachon river is 0.57 and that of the Juam dam is 0.77. The collected fishes in the Posoong dam area, not collecting in the Juam dam, were Hemibarbus labeo, Sarcocheilichthys nigrinnis morii, Abbotina rivularis, Rhodeus ocellatus, Rhodeus notatus, and Silurus microdorsalis.

      • 羅老島 植物資源 利用과 分布調査 : 島嶼開發을 爲한 基礎 硏究

        金琮鴻,李浩俊,張錫模 순천대학 새마을연구소 1986 새마을硏究論文集 Vol.2 No.-

        The Plant resources of Narodo Islands ( Naenarodo Islet, Oenarodo Islet, Sayangdo Islet, Aedo Islet, and Surakdo Islet) were investigated 13 times from March 24, 1984 to November 30, 1985. In order to analyze the vegetation of these islands, vegetation structure, distribution and utilities of plants, and actual vegetation map of them were prepared. Vascular Plants of these islands, consisted of 8 forma, 92 varieties, 2 subspecies, 665 species, 490 genera, and 130 families, alternatively, there were 272 species of woody plants and 495 species of herbs. These woody plants and herbs were reclassified with their utilities as 405 species for edible resources, 460 species for medicinal resources, 104 species for ornamental resources, 1 species for fiber resources, 280 species for industrial r-ough resources, and 118 species for feed resources. Since Narodo Islands are situated on the warm temperature forest zone, they are full of the temperate diagnosis trees with 61 species of evergreen broadleaf trees. Furthermore, the natural vegetation of them consisted of two stand units :l) evergreen broadleaf forest including Castanopsis cuspidata var sieboldii, Castanopsis cuspidata var, thunbergii, Camellia japonica, Sageretia theezans, Machilus thunbergii, Pittosporum tobira, Ligustrum japonica, Ardisia japonica, Ouercus myrsinae, and Parabenzoin trilobum and 2) Pinus thunbergii forest. The confficient of cryptogam(Pte-Q)and urbanization index (UI) as to destruction degree of natural vegetation showed a value of 1.27 and 19.25, respectively. The vegetation around densely populated villages was destructed. The average values of the degree of green naturality (DGN) of the investigated area were 3.78 at Naenarodo Islet and 5.42 at Oenarodo Islet. These data showed that the vegetation of Oenarodo Islet was well preserved. On the order hand, the community of Castanopsis cuspidata var, sieboldii and Camellia japonica at Shingum ferry terminal, Lycoris albiflora, Parabenzoin trilobum, Neofinetia falcata, Cymbidium goeringii, and Dendrobium moniliforme, etc. were feared to be destructed in their vegetation as the result of the development of Narodo Islands as a tourist resort. Therefore, it is desired that a proper control system be taken for their preservation.

      • 순천·광양지역 삼림식생에 대한 식물사회학적 연구

        김종홍,신정식,윤경원 순천대학교 2000 순천대학교 자연과학논문집 Vol.19 No.1

        The relationship between floristic composition and phytosociological study was investigated from March 1999 to October 1999 in Sunchon and Kwangyang. Depending on physiognomy, actual vegetation map was drawn in 1:25,000 scale. According to Z-M method the surveyed area was classified into seven plant communities, Quercus serrata community, Carpinus laxiflora community, Quercus mongolica community, Pinus densiflora community, Quercus variabilis community, Acer mono community and Pinus koreaiensis afforestation. Whereas the vegetation of Mt. Paegun and Dosolbong is preserved, the others(Duongjuribond, Mt. Yongkae, Kooksabong) are destructed by human interferences.

      • 金鰲列島의 植物相과 植生에 關한 硏究

        金琮鴻,朴文秀,李浩俊,金瑛文 순천대학교 기초과학연구소 1991 基礎科學硏究誌 Vol.2 No.-

        The flora and vegetation of Kuˇmo Archipelago were investigated 20 times from 1985 to 1991. The vascular plants identified in these investigation areas were 45 orders, 136 families, 480 genera, 699 species, 3 subspecies, 106 varieties and 10 forma, summing up 818 total, and the floral data showed life form such as value H-D_1-R_5-e in biological type. It is demanded that the endemic species of this surveyed area such as, Gardeneria nutans, Damnacanthus indicus, Ardisia crenata, Cinnamomum japonicum, Machilus thunbergii, Machilus japonica, and Neolitsea sericea be protected. Vegatation of Kuˇmo Archipelago was classified into 23 communities : Pinus thunbergii community, Pinus thunbergii-Carpinus coreana community, Pinus thunbergii-Quercus acutissima community, Pinus thunbergii-Eurya emarginata community, Pinus thunbergii-Litsia japonica community, Pinus thunbergii-Camellia japonica community, Pinus densiflora community, and Torreya nusifera community as pine forest, Carpinus coreana community, Carpinus coreana-Miscanthus sinensis var. purpurascens community, Quercus accutissima community and Alnus japonica community, as deciduous broad-leaved forest, Castanopsis cuspidata var. sieboldii community, Castanopsis cuspidata var. sieboldii-Pinus thunbergii communiy, Castanopsis cuspidata var. sieboldii-Quercus myrsinaefolia community, Castanopsis cuspidata rar. sieboldii-Castanopsis cuspidata var. thunbergii community, Castanopsis cuspidata var. thunbergii community, Camellia japonica community, Camellia japonica-Quercus myrsinaefolia community, Camellia japonica-Machilus thugbergii community and Machilus thunbergii community as evergreen broad-leaved forest, Miscanthus sinensis var. purpurascens community and bamboo community as herb. The map of actual vegetation and the map showing degree of naturality were condcuted with the material obtained by the investigation of the vegetation of the 100 stands in 100area. The total standing crop and net production of this area were estimated as 185, 112.5t and 31,267.5t/year, respectively.

      • 小鹿島의 植物相과 植生에 關한 硏究

        金琮鴻 건국대학교 1987 論文集 Vol.24 No.1

        The flora and vegetation of Sorokdo islet were investigated 12 times from December 12, 1983 to June, 1986. In order to analyze the vegetation of this islet, vegetation structure, life form composition, troll properties, profile diagrams and actual vegetation map were prepared and evaluated. The vascular plants identified in these investigations were 114 families, 352 genera, 425 species, 2 subspecies, 69 varieties, 9 formae, summing up to 505 species total. Furthermore, Cytisus scoparius LINK. was collected for the first time in korea The units of natural vegetation were classified into 3 communities: Pinus densiflora, p. thunbergii, and afforested P. rigida. And then, P. densiflora was estimated as dorminant species throughout this Island. Especially, Rododendron macronulatum var. ciliatum, R. macronulatum var. maritimum and Eurya japonica in shrub layer, and Arundinella hirta, Miscaathus sinensis var. purpurascens and Solidago virga-aurea var. asiatica in herb layer were common species of those 3 communities. Biological spectra in this Islet was estimated as H-D1-R5-e type. Soil texture was sandy loam in the area of P. thunbergii, loam and clay loam in the area of P. densiflora, and loamy sandy in the area of P. rigida, respectively. The average degree of green naturality of the investigated area was 4.20. Therefore, it was considered that the vegetation of Sorokdo Islet was considerably interfered by man.

      • KCI등재

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