• 한국자원식물학회지
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• 제32권6호
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• pp.752-757
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• 2019

The establishment of invasive alien species management is widely recognized as a pivotal issue in the preservation of biodiversity. Ranunculus sardous Crantz, a species native to Europe, has been widely introduced in many other areas of the world, including the coasts of the United States, Australia, China, India, and Japan. In Korea, the first population of this plant was found growing adjacent to a wetland in Hanon, Seogwipo-si, Jeju Province, on 22 May 2018. Field observations confirmed the presences of at least two populations of this species in Jeju Province, Korea. This species is similar to Ranunculus sceleratus L., but can be readily distinguished by its presence of the trichomes in the whole plant, longer petioles of radical leaves, ovate-shaped leaf segments, globose to subglobose-shaped fruits and flat achenes with narrowly winged and papillae. The Invasive Alien Plant Risk Assessment (IAPRA), a system for recognizing and categorizing alien plants in Korea forests, was used to assess the invasiveness status of the species. Based on this system, R. sardous received a low score of 6, suggesting its potential invasion to natural forests. Although the current distribution of R. sardous is restricted to Jeju Province and thus far has had limited impact on local environments, local and regulatory authorities should pay close attention to this plant and take measures to prevent its further expansion.

• 한국환경복원기술학회지
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• 제22권6호
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• pp.89-96
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• 2019

This study was carried out for management of the invasive alien plants in Mt. Inwang located in central Seoul. The invasive alien plants are 11 families, 34 genera, 30 taxa, and they are 10.8% of the total vascular plants(314 taxa). The ecosystem disturbed plants designated by the Korea environment ministry are 6 taxa : Rumex acetosella, Lactuca scariola, Ambrosia trifida var. trifida, Ambrosia artemisiifolia, Aster pilosus and Eupatorium rugosum. In the life-form, herbaceous perennials are 13 taxa(35.3%). In the continent of origin, the species from America are 20 taxa(58.8%). In the introduction time, the species of third period are 14 taxa(41.2%). In the diffusion grade, 5 grade species are 14 taxa(41.2%) and they are wide spread species. Mt. Inwang was designated as ecological scenery conservation area of Seoul in 2007. But Mt. Inwang is in high danger by the spread of invasive alien plants and ecosystem disturbed plants, due to artificial factors such as development pressure and the occurrence of byway trail. Therefore, Mt. Inwang needs systematic management of invasive alien plants and monitoring of long-term changes.

• Animal cells and systems
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• 제7권3호
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• pp.197-205
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• 2003

White snakeroot (Ageratina altissima (L.) R. King & H. Robinson) as an invasive alien plant appeared more abundantly at lower elevations where frequent artificial interferences prevailed than at higher elevations where such impacts were less. They appeared abundantly in introduced forests such as black locust plantation but they did not appear or were rare in natural forests such as oak forest. But an exceptional phenomenon where white snakeroot did not appear was found in a Korean pine stand with dense cover afforested recently. Appearance status of white snakeroot in each section of trampling path depended on breadth of the path and relative light intensity. Growth of white snakeroot measured as the number of ramet per genet, height, and biomass was better near the trampling path and was reduced toward the forest interior. The growth was proportionate to the relative light intensity measured according to distance from the trampling path. Such results support the fact generally known in relation invasion and expansion of the invasive alien plants. From this viewpoint, we suggest a management plan that applies ecological restoration principles to address ecosystems infected with white snakeroot by restoring the integral feature of the degraded nature and more thoroughly conserving the remaining nature.

• 식물분류학회지
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• 제50권2호
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• pp.89-119
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• 2020

세계화에 따른 국제교류가 증가함에 따라 외래식물의 국내 유입 또한 증가하고 있다. 외래식물이 자연생태계에 미칠 수 있는 여러 부정적인 영향들이 알려지면서 전 세계적으로 자생식물의 보전을 위한 국가 차원의 관리 및 여러 정책들이 수행되고 있지만, 국내의 경우 이들의 현황 파악조차 미흡한 실정이다. 본 연구는 국립수목원에서 수행하는 '외래식물 다양성 변화 및 위험성 평가' 과제의 일환으로 수행된 연구결과 중 일부로, 국내에 유입되어 정착화되었거나, 재배지로부터 일출되어 자연생태계로 확산 가능성이 높은 외래식물의 현황을 파악하였고, 산림청 국립수목원을 비롯한 타부처 외래식물 목록과 관련 주요 도감 및 문헌들을 재검토하였다. 또한 이들을 원산지, 도입시기 및 정착 여부에 따라 체계화하였고, 침입외래식물로 분류되는 외래식물들은 국내 분포정보를 바탕으로 확산정도를 등급화 하였다. 그 결과 국내에 분포하는 외래식물은 96과 353속, 595종, 6아종, 11변종, 1품종, 6잡종의 총 619분류군으로 파악되었으며, 이 중 사전귀화식물 30분류군, 잠재침입식물 214분류군이었고, 침입외래식물은 총 375분류군으로 5등급(widespread, WS)이 19분류군, 4등급(serious spread, SS) 16분류군, 3등급(concerned spread, CS) 19분류군, 2등급(minor spread, MS) 37분류군, 1등급(potential spread, PS) 284분류군으로 나타났다. 외래식물은 앞으로도 계속 유입될 것이고, 이들의 분포 또한 환경 및 기타요인에 의해 변하기 때문에 지속적인 현황파악이 수행되어야 한다.

• 한국자원식물학회지
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• 제35권5호
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• pp.607-613
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• 2022

Vulpia octoflora (Walter) Rydb.가 경기도 여주시 강천리 일대에서 발견되었다. 본 종은 북아메리카 원산으로 알려져 있으며, 최근 호주와 일본, 우크라이나에서 침입외래식물로 보고된 바 있다. V. octoflora는 주로 건조한 모래나 자갈 모래밭에 자라는 잡초성 식물로, 도로변을 따라 개방된 지역이나 인위적 교란 지역에서 빈번하게 발견된다. 본 종은 최근에 국내에 보고된 침입외래식물인 들묵새아재비와 유사하나, 소수당 달리는 소화의 수가 더 많고, 호영 정단부의 까락의 길이가 짧은 것으로 명확히 구분된다. 본 연구에서는 주요 형질에 대한 기재, 지리적 분포, 도해도, 화상자료와 국내에 분포하는 동속 분류군의 검색표를 제공하고자 한다.

• 한국전통조경학회지
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• 제40권2호
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• pp.44-58
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• 2022

분황사, 백률사, 삼불사는 유명한 문화재구역은 아니지만 많은 관광객들이 찾고 경주국립공원과 경주역사유적지구에 위치해 환경적, 문화적으로 보존이 필요한 지역이다. 따라서 본 연구의 목적은 경주 전통사찰의 침입외래식물을 중심으로 분석하여 문화재의 고유환경과 경관을 관리하기 위함이다. 전체 식물상은 73과 136속 154종 3아종 11변종 4품종 5잡종 12재배품종의 188분류군이며, 조경식물은 163분류군, 침입외래식물은 38분류군으로 나타났다. 식재된 침입외래식물은 13분류군이며, 생태계교란 생물은 애기수영, 가시상추, 미국쑥부쟁이 3분류군이었다. 침입외래식물은 조경식재와 같은 인위적 원인도 있지만 외부에서 자연적으로 유입된 것도 있었다. 사찰의 주차장은 간섭과 교란이 많아 침입외래식물의 주요 전파경로가 될 것으로 예상된다. 본 연구 결과를 토대로 관리방안을 제언하면 다음과 같다. 첫 번째, 전통사찰의 조경식재는 한국의 자연환경 및 전통경관에 맞는 자생종 위주로 사용하는 것이 필요하며, 문화재 중심의 식재지침 개발이 요구된다. 두 번째, 전통사찰은 환경적, 역사적으로 중요한 지역에 위치해 있으므로 침입외래식물의 식재를 자제하는 것이 필요하다. 세 번째, 사찰환경의 보전을 위해 주변의 생태계교란 생물을 조속히 제거해야 할 것이다. 네 번째, 전통사찰의 경관적 특징을 표현하기 위해 입지환경, 역사성 등을 고려하여 특색 있는 식재계획이 수립되어야 할 것이다.

• Animal cells and systems
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• 제10권1호
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• pp.27-40
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• 2006

Tree of heaven (Ailanthus altissima Swingle) as an invasive alien plant, appeared usually in the disturbed locations such as road-side, incised slope, and trampling path-side. They appeared abundantly in the trampling pathside but they did not appear or were rare in the interior of forest. Density and importance value of tree of heaven were proportionate to the relative light intensity measured according to distance from the trampling path toward forest interior and closely related to the breadth of trampling path as well. They were associated with annual, other exotic species or ruderal plants well. Distributional pattern of mature trees of them in the study area and its surrounding environments implied that they were introduced intentionally. Size class distribution of them showed that they are in expansion and artificial interferences such as, installing physical training space and developing hiking course functioned as trigger factors in their invasion and expansion. The results support the facts known generally in relation to invasion and expansion of the invasive alien plants. In this viewpoint, we suggest a management plan that applies ecological restoration principles to address ecosystems infected with tree of heaven by restoring the integral feature of the degraded nature and conserving the remained nature more thoroughly.

• Journal of Species Research
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• 제8권1호
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• pp.136-159
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• 2019

This study was carried out to investigate the flora of six islands belonging to the Gogunsan Archipelago (i.e., Sinsi-do, Seonyu-do, Munyeo-do, Yami-do, Bian-do, and Duri-do) in the Korean Peninsula. As results of five field surveys from March to October of 2016, we have identified 575 total taxa, representing 527 species, five subspecies, 42 varieties, and one hybrid, placed in 358 genera and 118 families. Of these 575 taxa, four are endemic to Korea, six taxa are listed on the Korean Red List of threatened species, 67 are floristic regional indicator plants, and 74 are invasive alien species. In this study, we compared species richness among the islands, and find that the larger the islands, the higher the species richness. In the case of habitat affinity types, forest species were most common, followed by farmland, seacoast, bare ground and wetland species. From similarity analyses based on the composition of vascular plants, each island did not exhibit either local specificity or unique diversity. On the contrary, the proportion of invasive alien and ruderal species may increase by human activities. Investigations and analyses of island flora such as this are important to assess the current status of the flora, predict future vegetation patterns and the spread of the alien species, and establish managment plans of plant diversity.

• 환경생물
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• 제38권3호
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• pp.392-403
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• 2020

This study analyzed the distribution characteristics of invasive alien plants on the islands of the Korean Peninsula. Ten species, Rumex acetosella, Sicyos angulatus, Solanum carolinense, Ambrosia artemisiaefolia var. elatior, Ambrosia trifida, Aster pilosus, Eupatorium rugosum, Hypochaeris radicata, Lactuca scariola, and Paspalum distichum were present on 68 islands. These ecosystem-disturbing invasive alien plants appeared extensively on the islands of Gyeonggi province and Jeollanam province. The proportion of the plants on the inhabited islands (41 places, 2.15 species on average) was higher than that on the uninhabited islands (27 places, 1.07 species on average). This means that the distribution of invasive alien plants was closely related to human activity. The distribution of Ambrosia artemisiaefolia var. elatior(32 islands) and Rumex acetosella (31 islands) was the widest, and there were distinct distribution differences according to species. In the island area, the physical environment is poor compared to the mainland, and the native space is limited. Therefore, when invasive alien species enter and settle on the island, the native island plants can be damaged more than those on the mainland. In this regard, the discussion of the distribution of invasive alien plants in the island region can contribute to the conservation of biodiversity in the region.

• 한국자원식물학회지
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• 제33권3호
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• pp.220-225
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• 2020

Bowlesia incana Ruiz & Pav., a new invasive alien plant in Korea, was found in Ulju-gun, Ulsan Metropolitan City. This species is characterized as being similar to the genera Hydrocotyle Tourn. ex L. and Centella L. However, it differs morphologically from these two genera in leaves, flowers, and fruits, as well as stellate pubescence growing on the whole plant. In Korea, Bowlesia incana Ruiz & Pav. is recorded for the first time in this study. A morphological description, distribution map, and illustrations based on the Korean materials collected are presented.