• 제목/요약/키워드: NATIVE PLANTS

검색결과 673건 처리시간 0.032초

사면 녹화용 외래초종과 재래 목·초본식물의 적정 파종량 및 혼파비에 관한 연구(II) (Optimal Amount and Mixture Ratio of Seeding of the Exotic and Native Plants for Slope Revegetation(II))

  • 전기성;우보명
    • 한국환경복원기술학회지
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    • 제2권2호
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    • pp.43-52
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    • 1999
  • This study was carried out to verify results of the nursery seedbeds. From November of 1997 to September of 1998, the artificial banking slopes in the greenhouse of the College of Agriculture and Life Sciences, Seoul National University were seeded with the mixtures of those species. Most of exotic species showed relatively poor development of root as short as 30cm. Also the green weight of root biomass of the native species was more than two times than that of the exotic species. On the other hand, it was found that the exotic species have relatively well-developed fine roots. Thus, it was concluded that the seed-mixture of the native species with long and thick roots and the exotic species with fine roots be the most effective method for topsoil erosion control on banking-slopes. The artificial rainfall system treatment(30mm/hr, 60mm/hr, 100mm/hr) on $30^{\circ}$ banking-slopes did not cause any significant change in the amount of soil loss by erosion. The root system was best developed in the plot of 1,000 seedlings per square meter and it performed well for soil erosion control. Consequently, in the case of seeding of single herbaceous species without mixing any woody seeds, the expected seedlings were 1,000 to 2,000 per square meter.

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Methods for sampling and analysis of marine microalgae in ship ballast tanks: a case study from Tampa Bay, Florida, USA

  • Garrett, Matthew J.;Wolny, Jennifer L.;Williams, B. James;Dirks, Michael D.;Brame, Julie A.;Richardson, R. William
    • ALGAE
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    • 제26권2호
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    • pp.181-192
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    • 2011
  • Ballasting and deballasting of shipping vessels in foreign ports have been reported worldwide as a vector of introduction of non-native aquatic plants and animals. Recently, attention has turned to ballast water as a factor in the global increase of harmful algal blooms (HABs). Many species of microalgae, including harmful dinoflagellate species, can remain viable for months in dormant benthic stages (cysts) in ballast sediments. Over a period of four years, we surveyed ballast water and sediment of ships docked in two ports of Tampa Bay, Florida, USA. Sampling conditions encountered while sampling ballast water and sediments were vastly different between vessels. Since no single sample collection protocol could be applied, existing methods for sampling ballast were modified and new methods created to reduce time and labor necessary for the collection of high-quality, qualitative samples. Five methods were refined or developed, including one that allowed for a directed intake of water and sediments. From 63 samples, 1,633 dinoflagellate cysts and cyst-like cells were recovered. A native, cyst-forming, harmful dinoflagellate, Alexandrium balechii (Steidinger) F. J. R. Taylor, was collected, isolated, and cultured from the same vessel six months apart, indicating that ships exchanging ballast water in Tampa Bay have the potential to transport HAB species to other ports with similar ecologies, exposing them to non-native, potentially toxic blooms.

강우량이 극히 적은 여건에서의 인삼재배의 순응 : 캐나다 브리티쉬 콜롬비아의 실례 (The Adaptation of Ginseng Production of Semi-arid Environments : The Example of British Columbia, Canada)

  • Bailey, W.G.
    • Journal of Ginseng Research
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    • 제14권2호
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    • pp.297-309
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    • 1990
  • Ginseng is renowned for both its medicinal and herbal uses and successful cultivation of Panax ginseng in Asia and Panax Vtiinvtiefolilim in North America has until recently taken place in the native geographical ranges of the plants. As a consequence of the potential high capital return and anticipated increases in consumer consumption, commercial cultivation of American ginseng now occurs well outside the native range of the plant in North America. In fact, the region of greatest expansion of cultivation is in the semi-arid interior region of British Columbia, Canada. Linked with this expansion is the potential domination of the ginseng industry by agricultural corporations. In the interior of British Columbia, the native decidous forest environment of eastern North America is simulated with elevated polypropylene shade and a sllrface covering of straw mulch. The architecture of these environments is designed to permit maximillm machinery useage and to minimize labour requirements. Further, with only a four-year growth cycle, plant densities in the gardens are high. In this hot, semiarid environment, producers believe they have a competitive advantage over other regions in North America because of the low precipitation rates. This helps to minimize atmospheric humidity such that the conditions for fungal disease development are reduced. If soil moisture levels become limited, supplemental water can be provided by irrigation. The nature of the radiation and energy balance regimes of the shade and much environment promotes high soil moistilre levels. Also, the modified environment reduces soil heating. This can result in an aerial environment for the plant that is stressful and a rooting zone environment that is sub-optimal. The challenge of further refining the man modified environment for enhanced plant growth and health still remains.

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자생 왕포아풀(Poa pratensis L.)의 배발생 캘러스 유도 및 식물체 재분화 (Embryogenic Callus Induction and Plant Regeneration in Kentucky bluegrass (Poa pratensis L.) Native to Korea)

  • 이재신;심상렬;안병준
    • 식물조직배양학회지
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    • 제28권5호
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    • pp.277-281
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    • 2001
  • 자생 왕포아풀 (Poa pratensis L.)의 배발생 캘러스 유도 및 식물체 재분화 조건을 규명하였다. 도입된 다섯 품종과 국내에서 수집한 네 가지 생태형의 미성숙 화서와 완숙종자를 sucrose 30 g/L, Phytagel 3 g/L와 2,4-D 1 mg/L가 함유된 MS배지에 치상하여 24$^{\circ}C$로 조절된 항온실에서 배양하면서 캘러스를 유도하였다. 대부분의 배양에서 캘러스가 형성되었으나 배발생 캘러스는 완숙종자를 절편체로 썼을 때보다 미숙화서에서, 온실에서 재배되어 형성된 화서보다는 자연 재배조건에서 형성된 화서에서 배발생 캘러스의 유도율이 높았다. 배발생 캘러스는 85~98%의 효율로 높게 유도되었으며 계대배양 및 액체 진탕배양을 통해 6개월 이상 장기 증식되었으며, 생장조절제가 함유되지 않은 MS 재분화 배지에 이식하면 다수의 식물체로 재분화되었다. 재분화 식물들은 온실재배에서도 정상적으로 생장을 하였다.

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자생초본식물의 녹화소재로서의 특성에 관한 연구 (Studies on the Landscape Greenery Specificity of Indigenous Plants)

  • 방광자;이종석;이택주;강현경;설종호
    • 한국환경복원기술학회지
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    • 제1권1호
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    • pp.45-53
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    • 1998
  • 본 연구는 자생지 조사와 농장에서의 직접재배를 통하여 100종의 자생초본식물 외형적 특성과 생태적 특성을 고려하여 조경 녹화용으로의 용도를 분류할 목적으로 실시하였으며, 그 결과 조경대상지의 녹화목적을 고려하여 7개 종류의 용도에 따라 적정한 식물군을 분류하였다. 식물의 형태적, 생태적, 이용적 특성 등을 종합하여 고려할 때 금낭화, 술패랭이, 벌개미취, 층꽃나무, 좀씀바귀, 나리류, 구절초류, 기린초류, 양지꽃류, 비비추류, 원추리류, 맥문동류 등의 종들은 특별한 녹화기술 없이도 우리나라 전국 어디서나 목적과 장소를 불문하고 장기간의 좋은 녹화소재로써 이용이 가능할 것으로 생각되며, 이들의 과감한 식재를 통해 자생식물에 대한 인식을 높일 수 있을 것으로 생각되었다.

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향토수목원 및 관광지 조경을 위한 자생식물의 개발과 이용 (Development and Utilization of Native Plants for Native Arboretums and Tourism Planting with Income Improvement)

  • 이기의;윤영활;조현길;서옥하
    • Journal of Forest and Environmental Science
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    • 제14권1호
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    • pp.24-47
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    • 1998
  • 우리는 우리 지방에 자생하면서 기후풍토에 적응된 아름답고 진귀한 많은 야생 화목류와 교목류 등을 부존하고 있으면서도 이들을 연구 개발하지 않고 주로 도업종과 재배종에만 의존하고 있는 것이 오늘의 현실이다. 그러므로, 국내외의 관광객이 요구하는 즉, 강원도는 물론 우리나라 고유의 정취와 이미지를 줄 수 있는 많은 야생종들을 연구, 개발하여 조경식물화시켜 대량으로 번식시키는 동시에 일반 재배화함으로써 향토색 짙은 관광한국을 만들어 관광사업의 근본목표인 경제적 효용을 다하기 위해 매우 개발가치가 있는 교목류 37종과 관목류 73종의 특성, 재배법, 용도 등을 조사하였다.

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The growth and productivity of native Indonesian rice progenies and its relationship with root development during dry-season

  • Zakaria, Sabaruddin;Fitrya, Farid;Kurniawan, Trisda;Hereri, Agam Ihsan;Maulana, Teuku
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.338-338
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    • 2017
  • One of the problems in increasing rice production is getting lines or varieties that have high adaptability so that able to produce maximum production in a variety of environmental conditions. One strategy that can be done to get adaptive varieties is through the improvement of native varieties. This research was conducted in rain fed paddy field, Aceh province, Indonesia from June to September 2014. The texture of the soil was clay-loam with the soil pH ranged from 6.5-6.7. Five potential progenies of rice from crossing between native Indonesian rice with introduced rice varieties consist of C3, C4, S3, S5, S6 were used in this study. Besides that, one national rice variety Ciherang also used as a comparison. The plants were growth in the plot with the size of $2m{\times}1.4m$ with plant distance was $20cm{\times}20cm$. The fertilizers used in this study were Urea, NPK, and KCl. Randomized block design with 6 rice progenies/variety and 3 replications were used in this study. There were 18 experimental units and each experimental unit had 10 samples for the sources of data. The variables that were observed in this study including plant height at harvesting time, number of productive tiller, the percentage of empty grains and filled grain per panicle, weight of filled grains per hill, weight of filled grain per plot and yield potential per hectare. Analyzed were also conducted for the depth of root penetration, dry-root weight, dry-shoot weight, shoot-root weight ratio and its correlation with the weight of filled grain per hill. The research results show that there was significant difference on plant height at harvesting time, number of productive tillers, the percentage of empty grains and filled grain per panicle, weight of filled grains per hill, weight of filled grain per plot and yield potential per ha (p>0.01) among the treatments. In addition, depth root penetration, dry-root weight, dry-shoot weight, shoot-root weight ratio also had significant difference (p>0.01) among the treatment. The highest plant at harvesting time was found in S6, reaching 129.8 cm and the shortest plants was found in C3 reaching 107.5 cm. The largest number of productive tillers and the highest percentage of filled grains per panicle were found in Ciherang reaching 10.5 tillers and 80.7% respectively. Ciherang also had the heaviest weight of filled grains per hill and per plot reaching 21.1 g and 2.18 kg respectively. Whereas, S6 had the lowest number of tillers and the lowest percentage of filled grain per panicle.. The highest yield potential per ha was found in Ciherang reaching 7.79 tons. Among the progenies, S5 had the highest yield potential reaching 5 tons/Ha. The result also showed significant relationship between shoot-root weight ratio with weight of filled grains per hill. The highest value of shoot-root weight ratio (1.57) in Ciherang is thought had closed relationship with its yield potential.

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경관훼손지의 생태적 복구방안에 관한 연구 (A Study on the Ecological Restoration Strategies for the Disturbed Landscapes)

  • 김남춘
    • 한국환경복원기술학회지
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    • 제1권1호
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    • pp.28-44
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    • 1998
  • This study was conducted to suggest the ecological restoration strategies for the disturbed landscapes by theoretical study. Especially, it is aimed to suggest three objectives for restoration by using native plants ; (1) prevention or reduction of wind and water erosion, (2) provision of food and cover for variety of animal species, (3) improvement of the visual or aesthetic quality of disturbed sites. The main results were summarized as follows. 1. Cooperation between restoration ecologists and restoration practitioners is needed to delineate a scientific approach to restoration ; (1) Being aware of published literature that describes similar work and/or establish general principles. (2) Preparedness to carry out proper experiments to test ideas. (3) Preparedness to monitor fundamental parameters in a restoration scheme. (4) Providing information about the behavior of species. (5) Publish results. 2. There are three models of succession in theories of plant succession. The tolerance and facilitation models were recommended to ecological restoration. The inhibition model applies in most secondary succession, but the actual species which are introduced first may inhibit the germination and growth of slower-growing species, or they may prevent the growth of other species whose propagules arrive later. 3. The objectives of erosion control, wildlife habitat provision, and visual quality improvement are not mutually exclusive. However, many revegetation practices in the past have emphasized one of these aspects at the expense of the others. 4. A native plant community can be the model of ecological restoration. By stylization/abstraction of native plant community, trying to learn the most essential characteristics of community types - environmental factors ; dominant, prevalent, and "visual essence" species composition - in order to use such information in restoration. 5. After developing mass/spaces plan, match plant communities to the mass/space plan. In utilizing community grouping, there needs aesthetic ability to understand design elements. 6. Several hydrophytes such as Pennisetum saccharifluous, Themeda triandra, Cirsium pendulum show relatively good germination rates. In case of mesophytes and xerophytes, Arundinella hina, Artemisia princeps, Oenothera odorata and legumes seem to have quick-germinating abilities at barren sites. Pinus thunbergii, Rhus chinensis, Evodia daniellii, Alnus firma and Albizzia julibrissin can be considered as "late succession" woody plants because they show low germinating rates and slow growing habitat. 7. The seeds used for restoration should be collected within a certain radius of where it will be planted. Consideration in genetic issues in the collection and use of germplasm can increase the odds for successful restoration efforts. 8. The useful model in the "drift" pattern occurs so abundantly in naturally evolving landscapes. As one species diminishes in density, a second or third species are increased. Thus, dynamic interactions between species are created. Careful using of "drift phenomenon" in planting was recommended. 9. Virtually no stand of vegetation today is immune from the introduction and/or spreading of exotic species. Therefore, the perpetuation of a restored sites requires conscious monitoring and management. Thus, management would be the most important process in ecological restoration. 10. In order to keep the sites "natural", alternative management strategies would be applied in management ; Atenative management strategies are decelerating successional process, accelerating successional processes or modifying species composition. As management tools, mechanical, chemical, biological or environmental factor manipulation, e.g., fire could be used.

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충남 내륙지역 민속식물의 전통지식 (Traditional Knowledge on the Regional Folk Plants in Inland of Chungcheongnam-do Province, Korea)

  • 정혜란;권혜진;최경;정재민;문현식
    • 한국자원식물학회지
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    • 제27권4호
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    • pp.309-325
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    • 2014
  • 본 연구는 2011년 3월부터 10월까지 충남 내륙지역을 중심으로 민속식물자원에 대한 전통지식 정보를 수집하여 수집된 이용정보를 국내 자생식물의 주권 확보를 위한 자료로 활용하고, 또한 이를 토대로 신물질 신소재 개발의 기초정보 제공과 지속적인 보전 및 관리의 기초자료로 이용하기 위해 수행하였다. 충남 내륙지역의 12개 시 군에서 지역주민 125명(남자 37, 여자 88)을 대상으로 민속식물 자원의 분포와 이용에 대한 설문조사를 실시한 결과, 민속식물자원은 92과 225속 237종 4아종 29변종 3품종 총 273분류군으로 확인되었다. 조사된 273분류군 중에는 특산식물 5분류군과 희귀식물 8분류군, 귀화식물 16분류군이 포함되어 있었고, 그 중 야생식물은 191분류군이었으며, 재배식물은 82분류군이었다. 용도별 이용현황은 식용 981건, 약용 439건, 용재용 179건, 유지용 68건 등으로 주로 식용의 빈도가 높았다. 이용 부위로는 잎, 줄기, 열매 등의 순으로 나타났으며, 연령별 표준식물명과 지방명의 일치성 여부를 분석한 결과 50대에서 가장 높았으며, 90대에서 가장 낮았다.

경주 황성공원의 관속식물상 연구 (The Study of Vascular Plants in Hwangseong Park, Gyeongju-si)

  • 유주한;김영훈;천겅
    • 한국전통조경학회지
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    • 제38권3호
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    • pp.35-49
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    • 2020
  • 본 연구는 경주시 내 황성공원에 분포하는 관속식물상을 조사·분석하여 도시림의 생태계 관리 및 보전을 위한 기초 자료 제공에 목적이 있다. 2018년 4월부터 2020년 5월까지 관속식물상을 조사한 결과는 총 78과 222속 296종 5아종 18변종 6품종 4잡종 9재배품종 등 338분류군이며, 식재종 110분류군, 자생종 235분류군이 확인되었다. 대표적인 식재종은 맥문동이었다. 희귀식물은 7분류군, 한국특산식물은 5분류군으로 나타났다. 식물구계학적 특정식물은 총 24분류군으로, V등급은 1분류군, IV등급은 4분류군, III등급은 7분류군, II등급은 4분류군, I등급은 8분류군이었다. 귀화식물은 57분류군, 생태계교란식물은 6분류군으로 나타났다. 특히 이팝나무는 우리나라 전통 조경수목을 대표하며, 생태적 가치가 높다. 따라서 이팝나무의 노거수는 개체별로 번호를 부여하여 관리를 해야 할 것이다. 생태계교란식물은 주기적인 방제와 함께 시민단체와 연계하여 작업할 수 있는 프로그램 개발이 필요할 것이다.