• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.3 no.3
• /
• pp.37-44
• /
• 2000

The objective of this study is on suggesting the simulation model of 10 selected plants for the traffic noise barrier through field experiment by computer. The field experiment was carried out at the traffic noise barrier of Honam highway. The results are as follows. 1. It was identified that Paederia scandens, Celastrus Orbiculatus, Lonicera japonica, Wisteria floribunda, Parthenocissus tricuspidata and Parthenocissus quinquefolia grows well vertically and takes 3 years in covering completely. 2. It was identified that Trachelospermum asiaticum and Hedera rhombea, evergreen Climber(vine), grows slowly in comparative with other deciduous Climbers(vine), but give drivers good landscapes in winter. So those have considerable value in the south region of Taejeon. 3. It was identified that Wisteria jl.oribunda, Lonicera japonica, Paederia scandens, Clematis mandschurica and Campsis grandijlora showed good view in flowering period. 4. It was identified that auxiliary materials for inducing growth were needed in other plants except Parthenocissus tricuspidata, Parthenocissus quinquefolia. 5. It was identified that subsequent research about the auxiliary materials for inducing growth and adequate planting distance of each plants is needed for actual application.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.12 no.4
• /
• pp.47-71
• /
• 2009

The resource plants of northern region in Gapyeong-gun were investigated 7 times from Apr. 2007 to Oct. 2007. In the result of survey, the flora of this area, depend on voucher specimens, consist of 480 taxa totally; 94 families, 286 genera, 412 species, 4 subspecies, 52 varieties and 12 forms. The Resource plants in this area were categorized by their use into edible 177, pasturing 136, medicinal 124, stainable 69, ornamental 133, afforest 24, timber 10, fiber 6, industrial 2 taxa and unknown use plants 72, respectively. There were remarkable plants such as 14 taxa of Korean endemic plants, 85 taxa of specific plants which were designated by the Ministry of Environment, and 12 taxa of rare and endangered plants of Korea Forest Service. Furthermore, 22 taxa of naturalized plants 4.6% were also observed in this area and Urban Index (UI) was 8.2%. The vegetation status of investigated area was comparatively well conserved, but the degree of UI could be increased rapidly by the climbers, development of forest road. Therefore, the systems for conservation need to prepared for the effective management of forest, and the special plans need to control the number of climbers and visitors.

• Korean Journal of Environment and Ecology
• /
• v.20 no.4
• /
• pp.436-447
• /
• 2006

Recently, there is increasing demand on enhancing the efficiency of hydro-seed spraying in afforestation for damaged or degraded land including forest road slopes. In this study, we focus on how seed coating and molding may affect seed germination and seedling growth. Plant species used in the study are Lespedeza cyrtobotrya, Indigofera pseudotinctoria, Arudineila hirta, Poa pratensis, and Lolium perenne. The results of seed germination and seedling growth with and without seed coating and molding are analyzed as follows: 1. For all the species and in both seeding with molding covered with soil and seeding without molding in which seeds were over sown, the increment of germination ratio by seed coating method is greater than by non·coating one. Seed coating increases average germination ratios observed in seeding with molding and without molding by 11.2% and 21.4%, respectively. Germination force may decrease from 0.8 to 3.7 days depending on the plant species and the treatments. The $LD_{50}$ decreased by $0.8{\sim}2.6$ days. However, seed coating delays the start of germination by approximate 1 day for all of the observed plants. 2. Seed coating may have the effect of accelerating the growth of stem and leaf and root. The experimental result shows that seed coating leads to 21.7% and 34.8% increment of average stem and leaf growth by seeding with molding and without molding, respectively. In terms of root growth, seeding with molding results in 22.0% increment while seeding without molding produces 26.2% increased root growth. 3: Compared to seeding without molding, germination starts on an average of 1.3 days later in seeding coated seeds with molding. However. the germination ratio is increased by 5%, and germination force and $LD_{50}$ are observed to shorten by 1.0 day and 1.4 days, respectively. Meanwhile, whether seeds are coated or not may be more related with germination and seedling growth in seeding without molding than with those in seeding with molding. 4. In this study, coating materials are examined to look at which ones are better in each treatment. Coating with Vermiculite+Talcum is the most effective in germination and seedling growth for overall plants. Seed coating using Bentonite, Calcium Carbonate, and Calcium Hydroxide shows better results than non-coating does. 5. When seeds are coated, the greatest enhancement of seed germinations was observed in Indigofera pseudotinctoria and, in the case of seedling growth, Lespedeza cyrtobotrya has the most increasing observation value among the 5 examined species. These results may indicate that woody plant seeds, having greater sizes of seeds than ones of grass seeds, may have greater relation with seed coating than grass plant seeds may have. 6. Therefore, if seeds cannot be molded up after hydro-seeding on forest road slopes, it is recommended that seeds for restoration be pre-coated with Vermiculite+Talcum and then be sowed, in order to quickly stabilize the damaged slope and achieve successful afforestation.

• Journal of the Society of Disaster Information
• /
• v.14 no.2
• /
• pp.107-114
• /
• 2018

Purpose : This study is to develop walls using wall recording technology applied on roofs to prevent fire spread in traditional markets. Method : The spray head installed on the developed wall was designed so that the fire does not spread to adjacent buildings after being used for plants. In addition, a spray head was attached to the upper section and some sections for the growth of plants planted on the wall to prevent the spread of fire. Results : These technologies suggested the development of walls that can be installed at the upper level of buildings, such as traditional markets, and separate isolation facilities were not necessary because they are integrated with structures and sprinklers. In addition, sprinklers can perform both the plant spray and fire spread prevention functions. It is believed that this is the only alternative technology proposed in Korea to prevent the spread of fire. Conclusion : In this study, the wall design, designed directly to derive the quantitative performance of the fire spread reduction effect, demonstrated the fire suppression method of the wall system, the durability of the wall itself, and the flame retardability performance.

• Journal of Korean Society of Forest Science
• /
• v.85 no.2
• /
• pp.271-279
• /
• 1996

This study was conducted to find out the appropriate rates of mixed-seeding of native woody and herb species. It was carried out in greenhouse from 1994 to 1995. The early days germination individuals were $60no./m^2$ in case of woody species for mixed seeding treatment and the treatments were fertilization, soil surface treatment, seeding amount. The investigation factors are the number of individuals of woody and herb species, biomass, height, number of tillers, etc. The mean individuals of Lespedeza bicolor and Amorpha frutzcosa were investigated $1.14no./m^2$, $0.496no./m^2$ in 1995, and Spiraea prunifolia var. simpliciflora and Alnus hirsuta were withering to death. In 1995, the Individuals of Oenothera odorata, Themeda triandra var. japonica, Cymbopogon tortilis var. goeringii, Miscanthus sinensis, Artemisia princeps var. orientalis, Lespedeza cuneata, and Arundinella hirta were investigated $5.06no./m^2$, $1,072no./m^2$, $0no./m^2$, $412.53no./m^2$, $88.6no./m^2$, $8.9no./m^2$, $57.46no./m^2$, respectively, in case of herb species. The height and biomass of Lespedeza bicolor and Amorpha fruticosa showed very fast growth, and those of Themeda triandra var. japonica, Miscanthus sinensis had a similar tendency. For the changes in woody species, according to the seeding amount, there was no significant relationship between species, but It was highly significant in 1995. In case of the herb species, the relationship between the number of individuals and seeding amount was significant for both 1994 and 1995. The most number of tiller was Miscanthus sinensis(21), and showed Themeda triandra var. japonica, Arundinella hirta in descending order. For the mixed seeding of wood and herb species, the number of individuals, height, biomass, tiller of herb species diminished as the seeding amount of herb species increased. It can be concluded that using Lespedeza bicolor and Amorpha fruticosa for woody species and like Arundinella hirta in herb species will be efficient for revegetation measures. It seems, therefore, that the plants of revegetation methods will be used to Lespedeza bicolor, Amorpha fruticosa and Arundinella hirta, and further study is needed on the seeding amount.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.7 no.6
• /
• pp.75-83
• /
• 2004

Focusing on native plants that have high possibility of being introduced as rooftop material, this study was conducted to investigate extensive and easy-to-manage rooftop garden and to raise the utilization of native plants by verifying their growing response to artificial substrate soil depth and irrigation period. The study was conducted from March to September in 2002. Plants tested included Chrysanthemum zawadskii, Sedium middendorffianum, Thymus quinquecostatus, Allium senescens, and Dianthus superbus. Regarding soil depth, it was 5 cm and 10 cm. Irrigation period was non-irrigation, 1-week, 2-weeks, and 3- weeks, Its result is as follows; 1. In case of Sedum middendorffianum Maxim, mortality rate was 0% regardless of soil depth and irrigation period making it very suitable material for rooftop garden. 2. In case of Allium senescens L., mortality rate was 0% regardless of soil depth and irrigation period making it very suitable material for rooftop garden. Therefore, Provided that fertilizing is managed well, it is a plant that can be highly utilized.3. In case of Chrysanthemum zawadskii Herb. Subsp. (Nakai) Y. Lee Stat., the growth of top was lower in 10cm than in 5cm and it grew well in 10cm. When utilizing for rooftop garden, it would be desirable to keep minimum viable soil depth at over 10cm. If there is enough rainfall, soil and soil depth seem to have greater effect on growth than irrigation period does. 4. In case of Diauthus superbus L. var. longicalycinus (Maxim) Williams, rooting rate and growth were better in 10cm than in 5cm. Therefore, it is desirable to keep minimum soil depth at over 10cm. 5. In case of Thymus quinquecostatus Celak, the growth of top and flowering were better in 10cm than in 5cm. Therefore, it seems desirable to have minimum viable soil depth to be over 10cm. In conclusion, the most suitable species for rooftop garden are Sedium middendorffianum and Allium senescens in this experiment. However, Chrysanthemum zwadskii, Thymus quinquecostatus, and Dianthus chinensis also can be utilized greatly when irrigation is managed regularly in artificial mixed soil over 10cm.

• Ecology and Resilient Infrastructure
• /
• v.6 no.3
• /
• pp.163-170
• /
• 2019

The civil engineering materials used to stabilize the slopes of new riverbanks have a great impact on the types and growth of vegetation introduced after the completion of construction procedure. Recently, microbial-derived, ${\beta}$-glucan- and xanthan gum-based biopolymers are attracting attention as an ecofriendly strengthening material of riverbanks that can possibly stimulate plant growth. This study aimed to assess ecological effects of biopolymer application on native plants in Korean riverbanks. In particular, since dominant plant species could shape characteristics of an ecosystem, we examined the effects of biopolymer on the dominant plant species in riverbanks. Overall, biopolymer did not affect seed germination rates of testing plant species. In contrast, plants grew more vigorously in the soil mixed with biopolymer compared to those in the control soil. The biomass of Echinochloa crus-galli especially increased around two times more in the biopolymer treatment. Plants produced heavier root biomass and leaves with larger specific leaf area, which possibly contributes to the tolerance of environmental stress like drought. These results suggest that biopolymers treated on river banks are expected to stimulate plant growth and increase stress tolerance of domestic dominant plant species.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2019.04a
• /
• pp.60-60
• /
• 2019

지속가능한 개발이 주목받고 남북 평화의 시대를 맞이하여 임업분야와 농업 축산분야가 결합된 혼농임업(Agroforestry)이 주목받고 있다. 혼농임업(Agroforestry)은 식량, 과실, 풀사료, 땔감, 목재 등을 생산하고 토양보전을 실천하여 지속농업을 가능케 하는 복합영농의 한 형태이며, 북한 산지의 경우 황폐화된 산지가 많아 경제성과 산림녹화를 동시에 해결할 수 있어 많은 관심을 받고 있다. 본 연구는 강원도 하늘목장을 시범목장으로 선정하여 조사를 실시하였고, 연구조사지의 총 면적은 2.4ha로 백두대간과 오대산국립공원이 인접한 지역으로 다양한 식물상을 파악할 수 있는 지역이다. 그러므로 외래종침입에 따른 생태적 교란을 방지하기 위하여 완충지대를 설정하고 식물상 조사를 실시하였다. 그리고 조사지내의 대표 수종으로 선정된 모수만 남기고 벌채를 실시하여 변화양상을 모니터링 하였다. 2014년~2017년 총 3개년 계절별 조사를 통해 임간초지의 식물상 정보를 파악하였고 임간초지의 관속식물상을 조사한 결과 92과 250속 323종 4아종 43변종 6품종으로 총 376분류군이 조사되었다. 자원식물의 유용도 분석한 결과 식용자원(E)이 160분류군으로 가장 많은 비율을 차지하고 있었으며, 약용(M) 141분류군, 관상용(O) 45분류군으로 나타났으며, 용도미상(U) 식물도 73분류군이 분포하고 있는 것으로 나타났다. 또한 연구 대상지역의 특성을 고려하여 조성된 초지 내에서 조사료로 사용할 수 있는 식물 종을 파악하였다. 나아가 미비한 임간초지 식생의 DB를 구축하고, 지속가능한 녹색성장을 모색하여야 할 것이다.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.2 no.2
• /
• pp.33-42
• /
• 1999

The objective of this study was to determine the optimal amount and the mixture ratio of seeds for revegetation species by investigating their growth characteristics. For the purpose of the experiments, 15 plants were chosen. In May of 1995 to September of 1998, the nursery seedbeds of the College of Agriculture and Life Sciences, Seoul National University were seeded with the mixtures of those species. Then, the nursery seedbeds were treated to investigate the effects of the amount of seeding, the amount of fertilizer, and the depth of soil on the growth characteristics. As the results of the experiments, it was found that the effects of all the treatments on growth of shoots and roots were significant in the early phase. For the expected number of seedlings more than 3,000 per square meter, many seedlings got withered to death while the survivors were suppressed to grow slow in the early stage due to the density problem.

• Korean Journal of Environment and Ecology
• /
• v.18 no.3
• /
• pp.316-325
• /
• 2004

This study was carried out to survey the usability of Vitex rotundifolia as an afforestation and landscaping plant on destroyed slopes, sandyhills of sea boards, and places in need of landscaping. The growth characteristics of seedlings and rooted cuttings of Vitex rotundifolia in soils of varying properties and water content ere studied. In three test soils, with a water content of 5% each, the survival rate was more than 70ole for seedlings and more than 40％ for rooted cuttings. This demonstrates that Vitex rotundifolia is a very strongly xeric tree species. The length of stem, the diameter of root stock, leaves, and the length of root increased in all the three types of soil as the quantity of soil water increased. The difference of the growth in response to the water content of the soil was most pronounced in the length of the stem. The growth of seedlings was most notable in the weathered granitic soil. The sea sand and the red silt loam came second and third, respectively. However, there was no major difference in the three test soils. Thus, Vitex rotundifolia appears well-suited to several soil properties and soil water quantities, which makes it very useful as an afforestation and landscaping plant in various sites.