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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Forest Society
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Korean Forest Society
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Volume & Issues
Volume 99, Issue 6 - Dec 2010
Volume 99, Issue 5 - Oct 2010
Volume 99, Issue 4 - Aug 2010
Volume 99, Issue 3 - Jun 2010
Volume 99, Issue 2 - Apr 2010
Volume 99, Issue 1 - Mar 2010
Selecting the target year
A Critical Review of "Type Specimens Collected from Korea at the Herbarium of the University of Tokyo" and "Korean type Specimens Deposited in Foreign Herbaria and Museums"
Eom, Hyun-Joo ; Chang, Chin-Sung ; Kim, Hui ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 447~469
The recent publications of two major works from Ministry of Environment and Korea National Arboretum (Type specimens collected from Korea at the herbarium of the University of Tokyo, five volumes) and National Institute of Biological Resources (Korean type specimens deposited in foreign herbaria and museums, two volumes excluding other animal groups) on Korean vascular plants have resulted in discrepancies needing either correction or clarification. The former published the results of a portion of T. Nakai's collections deposited at TI, while the latter produced the results about collections of G. Koidzumi's, J. Ohwi's, and S. Kitamura's at Kyoto University and of E. H. Wilson's and H. Leveille's at Harvard University. Consequently some omissions, discrepancies, and conflicts resulted, such as the inclusion of conflicting designations of lectotype, isotype, syntype or holotype, erroneous citations of publications, and misinformation. Suh et al.'s publications about type specimens of Korean plants deposited at TI showed 47 conflicting typifications and 20 typographical and other errors. Type information offered by Yim et al. were discussed, and 75 conflicting typification and 30 typographical and other errors from these two volumes were also brought to notice. It is clear that Suh et al. and Yim et al. merely provided type information without consulting original description of each plant species. It is apparent that all these conflicting designation of types, erroneous citations of publications, and other types of misinformation were as a result of the disregard of original citation and the ignorance of basic type concept.
Skin Whitening and Skin Immune Activities of Different Parts of Acer mono and Acer okamotoanum
Jeong, Myoung-Hoon ; Kim, Seung-Seop ; Kim, Ji-Seon ; Lee, Hak-Ju ; Chio, Geun-Pyo ; Lee, Hyeon-Yong ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 470~478
UV-protection skin whitening and immune activities several parts of Acer mono and Acer okamotoanum were investigated. The bark of both Acer mono and Acer okamotoanum had higher yields than other parts as 2.67% and 2.45%. The cytotoxicity of the extracts were lower than 21.64% against human skin cell(CCD-986sk) line in adding 1.0 mg/mL of the highest concentration. The bark extracts of Acer mono greatly reduced the expression of MMP-1 on UV-irradiated CCD-986sk cells down to as 30%. At 1.0 mg/mL of bark extration of Acer mono,
expression was also significantly decreased. Generally, the bark extracts of Acer mono and Acer okamotoanum had higher activity than other parts, but, interestingly, wood extract of Acer okamotoanum showed strong inhibition effect on melanin production by Clone-M3 cells as 79.25%. From these results, we could conclude that the bark extract from Acer mono and Acer okamotoanum had skin-whitening activity as well immune enhancement activity.
Prediction of Pine-mushroom (Tricholoma matsutake) Production from the Ratio of Each Grade at the Joint Market
Park, Hyun ; Jung, Byung-Heon ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 479~486
We analyzed the relationships between the daily yield and quality of pine-mushroom to predict the annual production pattern and unit price of the mushroom with the records of pine-mushroom trade at Yeongdeok forestry cooperative's market for nine years (2000~2008). Although there were some exceptions due to extreme drought or extraordinary temperature, the production ratio of high quality (first and second grade) was more than 50% in early stage and decreased, while that of low quality (pileus opened and defected ones) showed increasing pattern after the production reached in peak. The ratio of high quality and that of low quality were reversed 1~9 days before the mushroom production reached the acme of daily yield, which allowed us to predict that the mushroom production would be decreased when the ratio of low quality overcomes that of high quality. The ratio of high quality preceded about 3~4 days prior to that of daily yield, and the mushroom yield showed significant correlations with the ratio of high quality mushroom prior to 3~4 days of the day with the coefficient larger than 0.5 (r=0.51 for 3 days and r=0.54 for 4 days). Thus, we concluded that the analysis of grade distribution of pine-mushroom at the market may provide a significant clue to predict production pattern of the mushroom. In addition, the price of high quality pine-mushroom showed clear negative correlations with the yield. Thus, the analysis may take a good role for the trading of pine-mushroom with providing information for predicting the price of pine-mushroom.
Trend Analysis on Facility Monitoring of Korea National Parks
Lee, Ju-Hee ; Bae, Min-Ki ; Sim, Kyu-Won ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 487~500
The purpose of this study was to provide direction for national parks management policies by analyzing national park facility monitoring data collected every 2 years from 2002 to 2006. The results of this study showed the following. Firstly, 16 mountainous national parks showed increasing values in importance and performance in IPA. The trend analysis results showed that the location and capacity of parking lots as well as the number of rest rooms need to be improved. Secondly, two marine national parks indicated increasing values in campground and coastal facilities in IP value. Also, the location, number, and cleanliness of rest rooms, safety and surface condition of trail, guard rail and warning signs, information signs, drinking water fountains and shower facilities were priorities for improvement. The implications of this study will be able to help by providing guidelines for installation and maintenance of park facilities which in turn will improve visitor satisfaction and establish national park facility operation policies.
Characterization of T-DNA Insertional Mutant of Formaldehyde-Responsive Protein1
Seo, Jae-Hyun ; Woo, Su-Young ; Kim, Wook ; Kwon, Mi ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 501~507
Formaldehyde responsive protein(FRP) 1 belongs to the family of universal stress protein(USP) and is known to respond to stress caused by fumigation of gaseous volatile organic compounds(VOCs) such as formaldehyde and toluene. However, the molecular function of this protein is not well understood at cellular and molecular level. In this study, loss of function mutant of FRP1 generated by T-DNA insertion(frp1-4) has been isolated from Arabidopsis thaliana and the function of FRP1 was characterized. The loss-of-function mutant of FRP1 appeared slight growth defects with shorter stem and rosette leaves compared to wild type. In addition, the damage caused by exogenous VOCs was more severe in frp1-4 than in control. Therefore, Arabidopsis FRP1 seems to be the protein involved not only in the growth and development of plant but also the stress resistance against toxic volatile organic compounds.
Development of the Carrying Capacity Indicators Management Program based on VERP model in Hallasan National Park
Kwon, Heon-Gyo ; Shin, Won-Sop ; Han, Sang-Yeol ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 508~516
Hallasan National Park is facing dramatic increase of visitors since no entrance fee charge effected in January of 2007 and it has created a concern about appropriate use levels. The overall objective of this study is development of the carrying capacity indicators management program using indicator and standard based on visitor experience and resource protection (VERP) model. The result of delphi survey identified eight potential indicators of resource and experiential conditions, including quality of valley water, visitor counts, trail impacts, crowding etc. Also, Data were also gathered to help provide an empirical foundation for setting standards for these indicator variables. The carrying capacity indicators management program based on VERP model estimates sustainability of national park and analyze scientifically change about resources and visitor's behavior. Also, it systematically manage and use united data, it supports operation accomplishment respected rational decision.
Perceived Value, Satisfaction and Revisit Intention for Arboretum Visitors
Hong, Sung-Kwon ; Kim, Jae-Hyun ; Kim, Yong-Ha ; Kim, Sung-Jin ; Jang, Ho-Chan ; Lee, Seok-Ho ; Tae, Yoo-Lee ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 517~527
The purpose of this study was to investigate the causal relationship among perceived value, satisfaction and revisit intention for visitors of the Korea National Arboretum. Three hundred respondents were selected by quota sampling, and well-known measurement scales utilized in marketing field were adopted in order to measure three variables with some modification to apply for arboretum visitors. Results of structural equation model showed that perceived value affected visitors' satisfaction, which in turn influenced revisit intention. Specifically, "emotional value" had the most significant influence on satisfaction, followed by "value for money" and "novelty value"; however, "social value" was not an influential construct. Based on calibration results, several strategies were suggested for the effective management. Authors advised that (a)improvement of measurement scale of value, (b)inclusion of self-congruity as antecedent variable to satisfaction, (c)changing revisit intention to word-of-mouth communication as a post-purchase behavioral intention, and (d)implementation of market segmentation should be considered for future research.
Effects on Habitation of Monochamus alternatus by Tending of Sapling Japanese Red Pine(Pinus densiflora) Forest
Jeon, Kwon-Seok ; Park, Nam-Chang ; Hong, Sung-Cheon ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 528~533
Cage plots were established in 2008 to find the relationship between combination of tended Japanese red pine sapling and the habitation of Monochamus alternatus, a vector for pine wood nematode. Japanese red pine sapling tended at different times were successively put into the cage, and then the adult of Monochamus alternatus was put in June. Presence or absence of the larva was determined November. Sapling tendings were done at seven successive times in 2009, mid- and late February and March, mid-April, May and June. Some saplings were also tended in mid-October of 2008, the previous year of this experiment. The larva was found in all the saplings tended later than mid-March in 2009. No larva was found in the saplings tended in mid-October of 2008 and those in February of 2009. In case of the combination the by-products of mid-February and late March of 2009 and mid-October of 2008, the larva was found in the by-product of mid-February and late March of 2009, but those in mid-October of 2008 was not. When the saplings tended in mid-October of 2008 and mid- and late February of 2009 were put into the cage singly, the larva was found in all the saplings. Results indicated the mixture of the saplings tended at different times affected the habitation of Monochamus alternatus differently.
Rainfall Pattern Regulating Surface Erosion and Its Effect on Variation in Sediment Yield in Post-wildfire Area
Seo, Jung-Il ; Chun, Kun-Woo ; Kim, Suk-Woo ; Kim, Min-Sik ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 534~545
To examine 1) rainfall pattern (i.e., type and intensity) regulating surface erosion on hillslopes in postwildfire area and 2) its effect on variation in sediment yield along the gradient of severity wildfire regimes and elapsed years, we surveyed the amount of sediment yield with respect to daily or net-effective rainfall in 9 plots in eastern coastal region, Republic of Korea. Before field investigation, all plots classified into three groups: low-, mixed- and high-severity wildfire regimes (3 plots in each group). We found that, with decreasing wildfire regimes and increasing elapsed years, the rainfall type regulating surface erosion changed from daily rainfall to net-effective rainfall (considering rainfall continuity) and its intensity increased continuously. In general, wildfires can destroy the stabilized forest floors, and thus rainfall interception by vegetation and litter layer should be reduced. Wildfires can also decrease soil pores in forest floors, and thus infiltration rates of soil are reduced. These two processes lead to frequent occurrence of overland flows required to surface erosion, and sediment yields in post-wildfire areas should increase linearly with increasing rainfall events. With the decreasing severity wildfire regimes and the increasing elapsed years, these processes should be stabilized, and therefore their sediment yields also decreased. Our findings on variations in sediment yields caused by the wildfire regimes and the elapsed years suggest understanding of hydrogeomorphic and ecologic diversities in post-wildfire areas, and these should be carefully examined for both watershed management and disaster prevention.
Study on Anti-oxidant Effect of Extracts from Pyrus ussuriensis Leaves
Lee, Chang-Eon ; Kim, Young-Hun ; Lee, Byung-Guen ; Lee, Do-Hyung ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 546~552
The aim of the study was to assess the cosmeceutical activity of Pyrus ussuriensis leaves and it is possible that can be used as a cosmetic ingredient for application of cosmetic industries. P. ussurensis leaf was extracted with various solvents including water, 70% ethanol and 60% acetone. In the result of DPPH (1,1-diphenyl-2-picryl-hydrazyl) scavenging radical activity, water, ethanol and acetone extract of P. ussuriensis leaf were higher than 70%, 80% and 85% at 50 ppm concentration, respectively. Xanthine oxidase inhibition activity and superoxide dismutase (SOD)-like activity by P. ussuriensis extract were higher than 30%. In addition, SODlike activity of all extracts showed tendency of the significant increase with the increase of concentration. In the anti-inflammatory test, P. ussuriensis leaf extract inhibited generation of nitric oxide (NO) stimulated by LPS in the macrophage cell line (raw 264.7) after 12 to 24 hours. As above results, P. ussuriensis has a great potential as a cosmeceutical raw material as well as anti-oxidant and anti-inflammatory ability.
Differences in Population Density of 3 Rodent Species Between Natural Restored and Red Pine Silvicultured Forests after Forest fire
Lee, Eun-Jae ; Son, Seung-Hun ; Lee, Woo-Shin ; Eo, Soo-Hyung ; Rhim, Shin-Jae ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 553~558
This study was conducted to clarify the differences in rodents population densities between natural restored and red pine silvicultured forests after forest fire in Samcheok, Gangwon Province, Korea from March to December 2008. One ha size of 3 study plots were set up in each natural restored and silvicultured stand. We trapped the small rodents during 4 consecutive nights every 2 months in each stand. Understory coverage and number of shrub stems were higher in silvicultured stand than in natural restored stand. Coverage of overstory, suboverstory and midstory, number of tree stem, woody seedling stems and dead wood, and amount of coarse woody debris were higher in natural restored stand than in silvicultured stand. Six hundred eighty eight individuals of four species, such as Apodemus agrarius, A. peninsulae, Eothenomys regulus and Tamias sibiricus were captured in our study. Number of captured small rodents were higher in natural restored stand than in silvicultured stand. Also, species compositions were differed in both stands. The captured number of A. agrarius and A. peninsulae were most highest in April and December. E. regulus were shown higher number of captured in April and June, and T. sibiricus were in June and October. Removal of coarse woody debris and silvicultural practice would not be good for the inhabitation of small rodents. For the conservation of small rodents diversity, management of understory and canopy would be needed in forest fired area.
Characteristics of the Rainfall-Runoff and Groundwater Level Change at Milbot Bog located in Mt.Cheonseong
Jung, Yu-Gyeong ; Lee, Sang-Won ; Lee, Heon-Ho ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 559~567
This study was conducted to investigate the hydrological characteristics of groundwater level change and rainfall hydrological runoff processes caused by tunnel construction at Milbot bog located in Mt. Cheonseong. Data were collected from July 2004 to May 2008. The results were summarized as follows: The occurrence time of the direct runoff caused by unit rainfall at the Milbot bog were tended to be slower than those at general mountainous basin. Also, runoff did not sensitively respond to amount of rainfall at the most of the long and short term hydrograph. The annual runoff rates from 2004 to 2008 were 0.26, 0.13, 0.16, 0.25 and 0.27, respectively, slightly increased after 2005 regardless of the tunnel construction. Thus, the function of Milbot bog will be weakened, and it supposed to be changed to land in the future because of increasing annual runoff. The annual runoff rate for 4 years was 0.19, which is greatly lower than that of general mountainous basin. The recession coefficient of the direct runoff in short term hydrograph was ranged to 0.89~0.97, which is much larger than that of the general mountainous basin, 0.2~0.8. The recession coefficient of base flow ranged from 0.93 to 0.99, which are similar to general mountainous watershed's values. Groundwater level of Milbot bog increased or decreased in proportion to rainfall intensity, and in the descending time after the groundwater level was reached at peak point, it tends to be decreased very slowly. Also, groundwater level increased or decreased maintaining relatively high value after precedent rainfall. Groundwater level was highest during summer with heavy rainfall, but was lowest during winter. Average groundwater levels decreased annually from 2004 to 2008, -8.48 cm, -14.60 cm, -20.46 cm, -20.11 cm, -28.59 cm, respectively. Therefore, it seems that the Milbot bog is becoming dry and losing its function as a bog.
Micropropagation of a Rare Tree Species, Empetrum nigrum var. japonicum K. Koch via Axillary Bud Culture
Han, Mu-Seok ; Park, So-Young ; Moon, Heung-Kyu ; Kang, Young-Jae ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 568~572
In order to develop an efficient micropropagation system for a rare tree species, Empetrum nigrum var. japonicum K. Koch, the effect of medium salt, cytokinins and auxin at different concentration were evaluated. Shoot induction from axillary bud was better on WPM medium than on MS medium. Although there was no significant differences observed in shoot induction among the salt strengths of WPM medium, whereas healthy shoots were developed on basal WPM medium. In comparison of the cytokinins affecting shoot proliferation, zeatin was better than BA, whereas BA exhibited more effectiveness on shoot elongation. In vitro root formation was better on WPM medium than on 1/2MS medium and achieved the highest rooting rate when 5.0 mg/L IBA treatment. 93% of rooted plantlets were survived on artificial soil mixture after 4 weeks of acclimatization. Above results suggest that a rare tree species, E. nigrum var. japonicum can be micropropagated via axillary bud cultures.
A Causality Analysis on the Relationship Between National Park Visitor Use and Economic Variables
Sim, Kyu-Won ; Lee, Ju-Hee ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 573~579
This study was carried out to investigate the relationship between visitor uses of national parks and economic variables, such as the index of industrial product and the consumer price index. The results from the Granger Causality test showed that the index of industrial product and the consumer price index influenced visitor use at national parks. Also the Impulse Response Analysis showed that the index of industrial product and the consumer price index greatly influenced national park visitor use in the short term as well as the long term. The study showed that national park visitor use was mainly influenced by variance decompositions. These results suggested that economic variables could be used to not only forecast the demand for recreation but also establish recreational policies.
Study on the Current status and Direction of Environmental Governance around Urban forest in Korea : With a Focus on the Recognition of Local Government Officials
Kim, Jae-Hyun ; Tae, Yoo-Lee ; Chang, Chu-Youn ; Kim, Kyung-Mok ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 580~589
In Korea, Public demand for quality of life is increasing gradually with socioeconomic growth. It is really necessary urban forestry because urban forest is one of the important factors in citizen's living environment. There is expected to participate government, citizen, NGOs and the corporate sector in urban forestry. This study was investigated the directions of environmental governance in urban forestry focused local government. As a result, urban forestry official recognized the importance of urban forestry by partnership. In order to manage urban forest efficiently, the committee must be comprised of various stakeholder and researcher have need to develop support system for management. Especially, it shows that they prefer corporations participate to create and manage urban forest.
A Study on the Structure of Forest Community of Picea jezoensis Stands at Cheonwangbong Area, Jirisan(Mt.)
An, Hyun-Cheul ; Kim, Gab-Tae ; Choo, Gab-Cheul ; Um, Tae-Won ; Park, Sam-Bong ; Park, Eun-Hee ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 590~596
To investigate and to compare the structure of Picea jezoensis forests at Chunwangbong area in the Jirisan National Park, 33 plots(400) were set up by a random sampling method. Dead individuals of Picea jezoensis trees were 15.6%, these were observed mainly in the upper-layer trees. A few seedlings of Picea jezoensis were found in this investigation area. This result indicates that Picea jezoensis might be gradually decreased in the future. Picea jezoensis stands were classified into two major groups by cluster analysis. There were strong positive correlations between Syringa reticulata and Acer pseudosieboldianum, Tripterygium regelii, Quercus serrata; Betula ermani and Lonicera maackii; Euonymus macropterus and Acer ukurunduense; Acer pseudosieboldianum and Tripterygium regelii, and relatively weak negative correlations were showed between Picea jezoensis and Abies koreana; Betula ermani and Acer ukurunduense; Acer pseudosieboldianum and Tripterygium regelii. Species diversity index(H') of investigated groups ranged from 1.0000 to 1.3010.
Inventory of Carbon Dioxide Emission in Carbon Cycle Community (The case study on Gyeongbuk Bonghwa-gun Chunyang-myeon Seobyeok-ri)
Kim, Hyo-Jin ; Byun, Woo-Hyuk ; Lim, Min-Woo ; Park, Won-Kyoung ; Kim, Min-Su ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 597~602
The most basic matter to establish forest carbon circulation village is statistic on greenhouse gas emissions. But currently, although there is statistic on greenhouse gas emissions in the level of city or province, there is not statistic on greenhouse gas emission in village unit. According to the results, The model area is located in Seobyeok-ri, Chunyang-myeon, Bonghwa-gun, Gyeongsangbuk-do, the total
emissions caused by energy used in the model area was
. Heating accounts for 55% of total emissions followed by 23% for power and 22% for vehicles. The model area emitted
due to rice growing and livestock raising, accounting for approximately 24.5% of total
emissions. It is expected that a reduction of as much as
emissions will be made from the current
to a level of 1/12th that amount, or
by replacing heating energy currently used in the model area with wood bioenergy such as wood chips or pellets. In addition, carbon emission reduction is expected for both heating and power by replacing the power consumption in houses, buildings, and street lights with solar power.
Study on the Local Officials' Awareness for Direction of Forest Landscape Management
Kim, Jae-Jun ; Park, Chan-Woo ; Kang, Min-Ji ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 603~610
The purpose of this study is to survey the current awareness of local officials and to give a proposal that can establish the meaningful directions for the forest landscape policy. The data for this study was collected with questionnaires. Total 232 questionnaires were launched and valid 105 questionnaires were used for analysis. As a result of these data analysis, we found out that their awareness of the importance of forest landscape was high and they thought forest landscape plan was needed. However supply of the information and data such as guidelines to improve forest landscape condition was not enough. Through the IPA method, we had 15 properties of forest landscape policy were settled. It show us what needs to be kept up the good work, what needs to be concentrated here, what the low priority are, or what the possible overkill are. We finally suggest that direction of forest landscape management should be established based on above investigation.
Analysis of Production Cost of Walnut Tree Cultivation in Major Cultivating Regions
Kim, Jae-Sung ; Lee, Uk ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 611~617
The current studies aim is to analyze the production cost of walnut tree cultivation and its object was targeted at walnut tree cultivating household region 163. The analysis is as follows. Our domestic walnut tree cultivating households averagely have cultivated about 0.7ha, and planting number per ha was averagely 204, and it showed that compared to the standard planting number (100), the plantation was done close planted. The most cultivar cultivated according to regions were Chungbuk region: sangchon 65.7%, Chungnam region: kwangduk 68.6%, Jeonbuk region: sangchon 98.0%, Gyeongbuk region: daeboo 61.2%. The production cost for cultivating walnuts can be classified into the followings; management cost(4436 thousand won/ha) such as manufacturing cost(292 thousand won/ha), intermediate material cost(3682 thousand won/ha), rent(103 thousand won/ha), employment cost(653 thousand won/ha) etc, and self-serviced expenses such as self-laboring cost(5,834 thousand won/ha), land security cost(490 thousand won/ha), fixed capital cost(834 thousand won/ha), circulating capital cost(234 thousand won/ha) etc. 11,820 thousand won were invested for the production cost of walnut and it made 11,586 thousand won/ha(rate of investment 72.3%) profit, and the net income was 4,196 thousand won/ha(net income rate 26.2%), showing high amount of income. The manufactured walnuts were marketed in Nong-hyup 39.8%, wholesalers 20.8%, dealers 19.8% and recently, as the amount of goods marketed directly to consumers themselves have increased, the income has reached up to 18.9%. At the basis of making most of idle soil, walnut tree's cultivated regions are fairly small, and due to the characteristics of sideline management, it has its limits in searching for production policy locally and promotion strategy of industries. Therefore, if the basic database can be established, subjected only to full-time cultivating households, then not only would the differences between the imported walnuts be reinforced, it would also be possible to transfer into the new and improved distribution system. Furthermore, through establishment of the database, it can be anticipated that it would contribute greatly in the increase of the household income.
Effects of Storage Duration, Medium and Viscin on in vitro seed Germination in Endangered Species, Loranthus tanakae
Lee, Su-Gwang ; Lee, Song-Hee ; Kang, Ho-Duck ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 618~624
This study was conducted to establish the in vitro seed germination of Loranthus tanakae. A factorial experiment evaluated the effects of seed storage duration (0, 8, 16 weeks), media (MS, SH, White, WPM), presence of viscin, GA3, gelling agent and concentrations. Seed germinated after one week culture in in vitro condition and produced radicles. In vitro seed germination was optimal when the seeds removed viscin placed on SH medium (69%) and the addition of 0.35% gelrite (75%) in the same medium. As seed storage duration was expanded to 8 or 16 weeks, in vitro seed germination rate was reduced rapidly. Holdfasts were also produced at the side of radicles. The important factors to produce holdfast and haustorium was kind of media as an optimal condition in White medium without any supplements to be shown 98% and 8% respectively. Process of in vitro germination of Loranthus tanakae was followed to radicle elongation, holdfast development and then haustorium formation sequencially.
An Analysis of the Yarding Productivity and Cost in Forest Tending Operation
Kim, Jae-Hwan ; Park, Sang-Jun ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 625~632
This study was carried out to analyze the yarding productivity and cost of the man-power operation by plastic chute, the yarding operation by yarder attached in tractor (Chuncheon Tower-yarder) and yarding operation by Tower-yarder (RME-300T) in forest tending operation. As result of average yarding timber volume was 0.67
per day and man, respectively. And, when an yarding timber volume was 60
/ha, the total yarding time including setting up and dismantling time of the plastic chute and yarding line was 20 days and 2 hours, 7 days and 1 hours and 21 minutes, 3 days and 4 hours and 27 minutes, respectively. The operation costs were 104,448 won/
, 29,968 won/
and 23,032 won/
, respectively. And, when yarding timber volume was 60
/ha, the total operation cost including setting up and dismantling time of the plastic chute and yarding line was 7,429,173 won/ha, 2,431,573 won/ha and 1,610,672 won/ha, respectively.
Somatic Embryogenesis and Plant regeneration with Embryogenic Tissue Lines in Larix leptolepis
Kim, Yong-Wook ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 633~637
This study was conducted to evaluate various effects of kinds of culture medium, concentrations of abscisic acid (ABA) or /kinds of osmotica on maturation of somatic embryos (SEs) with four (LL-L, LL-K, LL-P and LL-N) embryogenic tissue lines (ETLs) in Japanese larch (Larix leptolepis). In comparison of two culture medium, the LL-P produced the highest number of the cotyledon-staged SE (134.9/90 mg tissue) in 1/2LM medium. In contrast, no SEs were obtained except the LL-P (32.9) in medium of BLG. Effects of two concentrations of ABA in the medium with four ETL for SEs maturation were also compared. In the test of 60 or 100
ABA, the highest result was obtained in 60
ABA (142.9). However, the influence of ABA had little on SEs production except the LL-N regardless of concentrations of ABA. In comparison of different kinds/concentrations of osmotica, the best response was obtained from the treatment of 0.2 M maltose, the LL-K (540.5). In conclusion, the effects of production of SEs were greatly rely on the ETLs, rather than kinds of medium, concentrations of ABA or osmotica which were used in maturation of SEs.
Exploration of Optimum Container for Production of Larix leptolepsis Container Seedlings
Kim, Jong-Jin ; Lee, Kyung-Jae ; Song, Ki-Sun ; Cha, Young-Geun ; Chung, Young-Suk ; Lee, Jong-Hwa ; Yoon, Taek-Seong ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 638~644
This study was carried out to establish the informations on the optimum container for production of Larix leptolepsis container seedlings. Height growth of 1-year-old container seedling was highest in 250 mL of container (19.3 cm), and of 2-year-old seedling was in 500 mL (56.9 cm). On the other hand, the highest growth of root-collar diameter was observed in the both 1-year-old and 2-year-old seedlings grown in 500 mL. Dry mass production in both a whole seedling and each organs of 2-year-old seedling was significantly high in the container with larger volume and lower seedling density. According to the analysis using by WinRhizo program, the larger container in volume showed better root morphological traits such as total root length, root projected area, root surface area, root volume and average root diameter. Among the elements for analysis of root morphological traits, the root volume was the highest one affected by container volume. And it was observed that the root volume was 79.5% and 46.8% in 320 mL and 250 mL, respectively, compared to 500 mL.
The Survey for Expert Group of Recognition about Forest Management in Jirisan National Park
Kim, Dong-Hyeon ; Kim, Eui-Gyeong ; Park, Sang-Byeong ; Lee, Jeong-Hwan ;
Journal of Korean Forest Society, volume 99, issue 4, 2010, Pages 645~653
This study carried out the recognition of appropriate forest managements and directions in Jirisan National Park. For this purpose, we undertook interview survey about the recognition of forest management in Jirisan National Park from ecological and forest research fields' experts. From the statistical analysis results, it was founded that the difference among respondents' types was detected about recognition of forest management in National park. However, all the respondent types recognized that the forest management in National park is essential. So the forest management in national park by forest experts and relevant institutions are revealed needed.