• 한국습지학회지
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• 제20권1호
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• pp.27-34
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• 2018

본 연구에서는 멸종위기식물인 큰바늘꽃(Epilobium hirsutum L.)의 효과적인 보전 및 복원을 위한 기초자료를 얻기 위해 토양의 수분함량과 유기물함량이 번식계절과 생리 반응에 어떠한 영향을 주는지에 대하여 알아보았다. 큰바늘꽃은 다년생식물이지만 모든 구배에서 한 해에 생식생장을 하였다. 꽃봉오리, 꽃 그리고 열매주머니는 수분구배와 영양소구배에서 각각 높은 수분 조건과 높은 유기물 조건에서 가장 이른 시기에 성숙하였다. 그리고 꽃 수와 열매주머니 수는 높은 수분 조건과 높은 유기물 조건에서 더 빨리 증가하였다. 엽록소 함량은 수분구배에서 높은 중간 수분 조건과 높은 수분 조건에서 가장 많았고, 영양소구배에서는 차이가 없었다. 최소엽록소형광 값은 수분구배와 영양소구배 모두 차이가 없었고, 최대엽록소형광 값은 높은 수분 조건과 높은 유기물 조건에서 가장 높았다. 광계 II의 광화학적 효율 값은 모든 수분구배에서 0.75로 차이가 없었고, 영양소구배에서의 경우 높은 유기물 조건에서 0.78로 가장 높았다. 큰바늘꽃은 수분이 증가할수록 엽록소 함량이 많아지고, 유기물이 증가할수록 Fv/Fm 값이 높아졌다. 이상의 연구결과는 토양의 충분한 수분과 유기물 함량은 큰바늘꽃의 번식계절을 앞당겨 주고 생식생장을 촉진한다는 것을 보여준다. 추후 멸종위기종인 큰바늘꽃의 개체군 유지와 서식지를 관리하는데 중요한 정보가 될 것으로 판단된다.

• Journal of Ecology and Environment
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• 제41권10호
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• pp.281-289
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• 2017

Background: In this study, the growth and reproductive response of seedlings, grown in plastic pots with sand, to moisture and nutrients were analyzed in order to study the environmental conditions required to create an alternative habitat for Epilobium hirsutum L., an endangered plant. Results: Vegetative and reproductive growths of Epilobium hirsutum L. are accelerated with increase in moisture and organic matter content in the soil. Among vegetative organs, the number of runners related to asexual reproduction was the highest when the moisture content was over 25% and nutrient content between 7 and 14% in the soil. But the number of flowers related to flowering responses, among reproductive organs, was the highest when the moisture content was maintained at 75% and when nutrient content was 21% in the soil. The number of seeds, related to sexual reproduction, was the highest when the moisture content was over 25% and nutrient content between 14 and 21%. Conclusions: The study results show that a place with high moisture and nutrient content in the soil is advantageous to asexual and sexual reproduction of Epilobium hirsutum L. Therefore, we must serve periodically nutrient and seeds to sustain population in in situ conservation. Furthermore, it is advisable to create in riverside where abundant nutrient content have, making alternative habitat of Epilobium hirsutum L. Also, we must find species that have high contribution degree index through vegetation survey.

• Journal of Ecology and Environment
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• 제46권3호
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• pp.161-171
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• 2022

Background: Epilobium hirsutum L. is designated as an endangered plant in South Korea located in Asia, due to the destruction of its habitats through the development of wetlands. Therefore, in this study, in order to find a light condition suitable for the growth and ecophysiological responses of Epilobium hirsutum L., those of this plant under treatment with various light qualities in a smart farm were measured. Results: In order to examine the changes in the physiological and growth responses of Epilobium hirsutum L. according to the light qualities, the treatment with light qualities of the smart farm was carried out using the red light: blue light irradiation time ratios of 1:1, 1:1/2, and 1:1/5 and a red light: blue light: white light irradiation time ratio of 1:1:1. As a result, the ecophysiological responses (difference between leaf temperature and atmospheric temperature, transpiration rate, net photosynthetic rate, intercellular CO₂ partial pressure, photosynthetic quantum efficiency) to light qualities appeared differently according to the treatments with light qualities. The increase in the blue light ratio increased the difference between the leaf temperature and the atmospheric temperature and the photosynthetic quantum efficiency and decreased the transpiration rate and the intercellular CO₂ partial pressure. On the other hand, the white light treatment increased the transpiration rate and intercellular CO₂ partial pressure and decreased the temperature difference between the leaf temperature and the ambient temperature and photosynthetic quantum efficiency. Conclusions: The light condition suitable for the propagation by the stolons, which are the propagules of Epilobium hirsutum L., in the smart farm, is red, blue and white mixed light with high net photosynthetic rates and low difference between leaf temperature and atmospheric temperature.

• 식물분류학회지
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• 제47권2호
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• pp.100-105
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• 2017

경상북도 울릉군에서 바늘꽃과 바늘꽃속의 신종인 울릉바늘꽃(Epilobium ulleungensis J. M. Chung)을 발견하여 기재 및 도해하였다. 울릉도에 분포하는 바늘꽃속 4분류군(바늘꽃, E. pyrricholophum; 돌바늘꽃, E. amurense subsp. cephalostigma; 큰바늘꽃, E. hirsutum; 울릉바늘꽃, E. ulleungensis)중에서 울릉바늘꽃의 주두는 4각형으로서 곤봉형인 바늘꽃 또는 두상형인 돌바늘꽃과 4개로 깊게 갈라지는 큰바늘꽃의 중간 형태를 보이고 있다. 중요하게도, 울릉바늘꽃은 200 cm 이상의 큰 키와 비스듬히 누운 줄기, 잎의 형태, 식물체 전체의 짧은 밀모, 그리고 꽃의 크기와 진분홍색 또는 붉은 자주색의 꽃 색은 울릉도에 분포하는 다른 3분류군과 명확하게 구별된다. 주두의 형태와 다른 분류학적 형질들에 의해 울릉바늘꽃은 큰바늘꽃과 바늘꽃 또는 돌바늘꽃과의 잡종으로 추정되었다. 신종의 자생지가 울릉도인 점을 고려하여 'ulleungensis'이라 신칭하였다.

• Journal of Ecology and Environment
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• 제47권4호
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• pp.282-289
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• 2023

Background: As wildlife habitats are being destroyed and growth environments are changing, the survival of animals and plants is under threat. Epilobium hirsutum L., a species that inhabits wetlands, has held legally protected status since 2012. However, no specific measures are currently in place to protect its habitat, leading to a decline in remaining populations as a result of land use change and human activities. Results: The growth environment (including location, climate, land use, soil, and vegetation) of the five habitat sites (Samcheok, Taebaek1, Taebaek2, Cheongsong, Ulleung) of E. hirsutum L. was investigated and analyzed. These habitats were predominantly situated in flat areas with gentle south-facing slopes, at an average altitude of 452.7 m (8-726 m) above sea level in Gangwon-do and Gyeongsangbuk-do. The average annual temperature ranged 11.5℃ (9.2℃-12.9℃), whereas the average annual precipitation ranged 1,304.5 mm (1,062.7-1,590.7 mm). The surrounding land use status was mainly characterized by mountainous areas, and human interference, such as agricultural land and roads, was commonly found in proximity to these natural habitats. Soil physicochemical analysis revealed that the soil was predominantly sandy loam with a slightly high sand content. The average pH measured 7.64, indicating an alkaline environment, and electrical conductivity (EC) averaged 0.33 dS/m. Organic matter (OM) content averaged 66.44 g/kg, available phosphoric acid (P₂O₅) content averaged 115.73 mg/kg, and cation exchange capacity (CEC) averaged 23.43 cmolc/kg. The exchangeable cations ranged 0.09-0.43 cmol⁺/kg for potassium (K), 10.23-16.21 cmol⁺/kg for calcium (Ca), 0.67-4.94 cmol⁺/kg for magnesium (Mg), and 0.05-0.74 cmol⁺/kg for sodium (Na). The vegetation type was categorized as E. hirsutum community with high numbers of E. hirsutum L., Persicaria thunbergii (Siebold & Zucc.) H. Gross, Phragmites japonica Steud., Humulus japonicus (Siebold & Zucc.), and Bidens frondosa L.. An ecological flora analysis, including the proportion of lianas, naturalized plants, and annual herbaceous plants, revealed that the native habitat of E. hirsutum L. was ecologically unstable. Conclusions: Analysis of the habitat of E. hirsutum L., a class II endangered wildlife species, provided essential data for local conservation and restoration efforts.

• 한국자원식물학회지
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• 제32권4호
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• pp.379-406
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• 2019

주왕산국립공원의 관속식물상을 2017년도 3월부터 10월까지 총 13회에 걸쳐 조사하였다. 증거표본과 사진을 바탕으로 작성한 소산 관속식물은 112과 399속 672종 4아종 72변종 10품종의 총 758분류군으로 확인되었다. 이 중 기존의 조사에서는 발견되지 않았으나 본 조사에서 최초로 밝혀진 분류군은 221분류군이었다. 멸종위기야생식물은 가시오갈피, 큰바늘꽃 등 2분류군이 확인되었고, 희귀식물은 깽깽이풀, 백작약, 꼭지연잎꿩의다리 등 5분류군이 관찰되었다. 한반도 고유식물은 날개현호색, 노랑무늬붓꽃, 몽울토현삼 등 20분류군이 조사되었고, 식물구계학적 특정식물종은 III~V등급에 해당하는 40분류군이 확인되었다. 귀화식물은 총 55분류군으로 조사되었고, 생태계교란종은 가시상추, 돼지풀, 미국쑥부쟁이 등 3분류군이 확인되었다. 기후변화 취약종은 총 36분류군이 분포하였고, 북방계 21분류군, 남방계 2분류군, 관심식물은 13분류군으로 확인되었다.