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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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Journal DOI :
Korean Forest Society
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Volume & Issues
Volume 103, Issue 4 - Dec 2014
Volume 103, Issue 3 - Sep 2014
Volume 103, Issue 2 - Jun 2014
Volume 103, Issue 1 - Mar 2014
Selecting the target year
The Flora and Vegetation Structure of Forest Wetlands in Mt. Cheongok(Gyeongbuk Bonghwa)
Son, Ho-Jun ; Kim, Young-Sol ; Yun, Ju-Ung ; Chun, Kun-Woo ; Park, Wan-Geun ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 313~320
DOI : 10.14578/jkfs.2014.103.3.313
The purpose of this study was to provide basic data for preserving forest ecosystem with understanding forest wetland condition of Mt. Cheongok. It was found from this research that vascular plants of surveyed area were composed of 72 families, 167 genera, 209 species, and 2 subspecies, 27 varieties, 5 formae. totaling 243 taxa. Among the investigated vascular plants, Korea endemic plants were 9 species, rare plants 15 species, and naturalized plants 8 species, respectively. According to the occurrence frequency within the wetland investigated, obligate upland plants (OBU) accounted for 75.72% (184) among the total species investigated, wherea obligate wetland plant (OBW) were four species (4.65%). There were 26 of hygrophyte plants and 2 of emergent plants in the research area according to wet degree. According to habitat category, the most frequently occurred habitat was forest (136 species, 55.97%), and the others were in the order of meadow and shrubland (70 species, 28.81%), wet meadow (35 species, 14.40%), and aquatic environment (2 species, 0.82%), respectively. In the result of analysis of important value, Fraxinus rhynchophylla and Carex pseudosinensis was the highest as 22.17% and 10.40%. It was confirmed that the species diversity was relatively high. Shannon-Wiener's species diversity index was calculated as 2.507. Based on these results, long-term monitoring survey should be urgently needed for ecological restoration and recovery.
Vegetation and Environment of the Natural Monument (No. 432) Jeju Sanghyo-dong Cymbidium kanran Habitat
Shin, Jae-Kwon ; Koo, Bon-Youl ; Kim, Han-Gyeoul ; Son, Sung-Won ; Cho, Hyun-Je ; Bae, Kwan-Ho ; Ryang, Hyung-Ho ; Park, Joeng-Geun ; Lee, Jong-Suk ; Cho, Yong-Chan ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 321~338
DOI : 10.14578/jkfs.2014.103.3.321
In the Natural Monument (No. 432) Jeju Sanghyo-dong Cymbidium kanran Habitat (39 ha), flora, vegetation diversity, stand structure, mirco-climate, canopy openness, light environment and soil temperature and moisture were quantified from Oct. 2013 to Feb. 2014. Compare to Seogwipo-si, daily mean temperature (
) and moisture (75.8%) in study area were lower at
and 15%, respectively. Mean soil temperature and moisture were
and 37.3%, respectively, and mean litter layer depth (n = 81) was 4.3 cm. Mean canopy openness and light availability at forest floor were 15.5% and
, respectively. Total of 22 species including vascular and bryophyte plants and 6 vegetation group were observed. Castanopsis siebildii was dominant species in study area, and density and basal area were 1,777 stem/ha and
Community Structure of Pinus densiflora and Quercus mongolica forest in Jochimryeong to Shinbaeryeong of the Baekdudaegan
Lee, Ha Young ; Kim, Hye Jin ; Shin, Hak Sub ; Han, Sang Hak ; Ko, Seung Yeon ; Song, Ju Hyeon ; Lee, Jung Hyo ; Jang, Kyung Hwan ; Yun, Chung Weon ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 339~352
DOI : 10.14578/jkfs.2014.103.3.339
The study was carried out to analyze vegetation structure of Pinus densiflora and Quercus mongolica forests located in Jochimryeong to Shinbaeryeong of the Baekdudaegan mountain range. The survey for 50 plots was conducted from April 2012 to August 2013 in the permanent plots (
) using phytosociological analysis. As a result, the vegetations were classified into five vegetation units. In species composition, they were classified into Q. mongolica community group divided into 2 community such as Fraxinus rhynchophylla community and Carpinus cordata community, F. rhynchophylla community was subdivided Pinus densiflor group (into Euonymus sachalinensis subgroup, Vitis coignetiae subgroup) and Juglans mandshurica group. C. cordata community was subdivided Acer komarovii group and Betula ermanii group. In terms of importance value, P. densiflora and Q. mongolica were more than 20% respectively. P. densiflora was found to have the highest relative coverage. Analysis of interspecific association showed four types which were coincident with differential species and character species on the constancy table. Based on the diameter class distribution, P. densiflora forest presented a normal distribution pattern except for other species which showed a reverse Jshaped distribution pattern, therefore P. densiflora forest would likely be replaced by Q. mongolica forests. While in Q. mongolica forest, diameter class distribution of all species population presented a reverse J-shaped distribution pattern, therefore Q. mongolica forest could likely remain in the future.
Optimal Harvest Time by the Seasonal Fruit Quality and Ripening Characteristics of Hardy Kiwifruit in Korea
Kim, Chul-Woo ; Oh, Sung-Il ; Kim, Mahn-Jo ; Park, Youngki ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 353~358
DOI : 10.14578/jkfs.2014.103.3.353
In order to obtain the basic data that could be used to evaluate the harvest time of new hardy kiwifruit cultivars (Actinidia arguta 'Saehan', 'Daesung' and 'Chilbo'), the seasonal fruit quality and ripening characteristics of hardy kiwifruit were investigated. Fruit sizes of 'Saehan', 'Daesung' and 'Chilbo' were increased from full bloom to 66 days, 85 days and 78 days, respectively. The growth curve of developing fruit of three cultivars showed double sigmoid. As a result of correlation analysis, the seed number per fruit showed a significant positive correlation with fruit weight (r = 0.94~0.97, p<0.01). Fruit length, width, thickness, weight, soluble solid content and titratable acidity were significantly different among the cultivars. Titratable acidity was increased from full bloom to harvest time and the titratable acidity of 'Saehan', 'Daesung' and 'Chilbo' were 1.77%, 1.22% and 1.37% on havest time, respectively. Optimal harvest time of 'Saehan' was 108 days (23 Sep.) after full bloom, those of 'Daesung' and 'Chilbo' were 92 (9 Sep.) days after full bloom.
Characteristics of Seed Germination and Potted Seedlings Growth of Endemic Species, Sambucus sieboldiana var. pendula and Sambucus sieboldiana for. xanthocarpa
Lee, Su Gwang ; Lee, Dong Jun ; Kim, Hyo Yun ; Ku, Ja Jung ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 359~367
DOI : 10.14578/jkfs.2014.103.3.359
This study was carried out to determine the effects of seed storage methods and pre-treatments on seed germination, soil types and shading conditions on potted seedlings growth of S. sieboldiana var. pendula and S. sieboldiana for. xanthocarpa, endemic species in Korea. The seed germination rate of S. sieboldiana var. pendula was the highest at 48.6% when seeds were treated with stratification for 60 days and then soaked in 100 ppm
. And seed germination rate of S. sieboldiana for. xanthocarpa was the highest at 51.4% when seeds were pre-chilled for 30 days and then soaked in 100 ppm
. And potted seedlings of S. sieboldiana var. pendula showed the best quality under 50% shading in bedsoil with the growth characteristics of plant height (41 cm), number of leaves(8), leaf width (16 cm), leaf length (18 cm), root length (22 cm), fresh weight(aerial part/root part; 20/6.9 g) and dry weight(aerial part/root part; 4.5/2.0 g). And potted seedlings of S. sieboldiana for. xanthocarpa showed the best quality under non-shading in bedsoil with the growth characteristics of plant height (39 cm), number of leaves(10), leaf width (12 cm), leaf length (15 cm), root length (22 cm), fresh weight (aerial part/root part; 21/13 g) and dry weight (aerial part/root part; 4.2/2.2 g). Therefore, seeds treated with stratification or prechilling and then soaked in
were effective in germination of S. sieboldiana var. pendula and S. sieboldiana for. xanthocarpa, and potted seedlings should be cultivated in bedsoil under non or 50% shading condition.
Changes of Storability and Quality Characteristics of 'Autumn Sense' Hardy Kiwifruit According to Ethylene Treatment and Storage Condition
Oh, Sung-Il ; Kim, Chul Woo ; Kim, Mahn-Jo ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 368~374
DOI : 10.14578/jkfs.2014.103.3.368
This study was investigated the changes of storability and quality characteristics of 'Autumn Sense' hardy kiwifruit according to ethylene treatment and storage condition. In the results of investigation of changes in hardy kiwifruit quality during storage period, hardness of ethylene treated hardy kiwifruit during 48 and 96 hours was rapidly decreased, but soluble solid content was rapidly increased with the passing of storage period in all treatment groups. The total acid was estimated from 0.7 to 1.4% with storage period in all treatment groups. In the results of investigation of the weight loss rate, ethylene treated hardy kiwifruit during 48 hours was the highest 30.9% in storage at
and lowest 5.9% in storage at
with a relative air humidity of about 90% during storage at 24 days. Ethylene treated hardy kiwifruit during 96 hours was decrease 29.4% in storage at
, 20.7% in storage at
, 12.1% in storage at
, and 6.0% in storage at
with a relative air humidity of about 90% during storage at 22 days. The taste of hardy kiwifruit during storage was reduced to increase in all treatment groups. Particularly, storage at
was rapidly reduced to increase in the early storage and storage at
with a relative air humidity of about 90% was decrease after storage at 18 days. The rotten rate during storage was increased in all treatment groups, storage at
was after storage at 2 days and storage at
with a relative air humidity of about 90% was rapidly increased after storage at 16 days. Thus, it can be recommended that storage at
with a relative air humidity of about 90% is good to maintain quality. Also, we will decide optimal storage condition and after-ripening time of 'Autumn Sense' hardy kiwifruit.
Regional Early Growth Performances of Planted Chamaecyparis obtusa Seedlings in Relation to Site Properties
Yang, A-Ram ; Hwang, Jaehong ; Cho, Min Seok ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 375~382
DOI : 10.14578/jkfs.2014.103.3.375
The objective of this study was to investigate suitable plantation site for planted Chamaecyparis obtusa seedlings from the analysis of regional early growth performances. Two years old C. obtusa seedlings were planted with the density of
in late March, 2011 at Haeman and Jangseong, Jeollanamdo. In each study site, three plots (
per plot) were established and root collar diameter (mm) and tree height (cm) of each C. obtusa were measured in April, 2011 and October from 2011 to 2013. We also analyzed soil physical and chemical properties of sites and compartmental nitrogen and phosphorus concentrations of C. obtusa. Although the concentrations of soil nitrogen, organic matter, and C.E.C. at Haenam site were higher than those at Jangseong site, early growth performances of planted C. obtusa at Jangseong site were significantly better than those at Haenam site. The reasons for these results were probably related to deep available soil depth at Jangseong site and relatively low annual precipitation and sea wind at Haenam site, which was adjacent to the sea. The compartmental nitrogen and phosphorus concentrations of C. obtusa was in the order of needles > current twigs > fine root > stem and branches root above 2 mm in diameter. The phosphorus concentration of needles at Haenam site was significantly higher than that at Jangseong site. The results of this study might be useful for the selection of suitable plantation site for C. obtusa.
Analysis of Secular Changes in the Hydrological Characteristics of a Small Forested Watershed using a Baseflow Recession Curve
Lee, Ik-Soo ; Lee, Heon-Ho ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 383~391
DOI : 10.14578/jkfs.2014.103.3.383
Long-term changes in the hydrological characteristics of a small forest watershed were examined using a master baseflow recession curve and the measured rainfall-runoff data from the experimental forest watershed in the measured years 2003-2011. The results of the study showed that the recession coefficient of direct runoff was lower than that of baseflow. In small forested watershed, the direct flow was lower than that of large scale watershed, flow due to its shorter period of occurrence. And baseflow was similar to large scale watershed's. A regression equation
, range 0.3~0.8 mm) was obtained using the master baseflow recession curve for the study period and the recession coefficient was calculated as K = 0.978. Changes between master baseflow recession curve and runoff showed great association and relevance such as increasing runoff was associated with the gentle slope of master baseflow recession curve and decreasing runoff was associated with the slope of master baseflow recession curve contrary. In the later years of the study period, the slope of the master baseflow recession curve appreciably became more gentle due to increases in baseflow. This suggests that the forested experimental watershed exhibit improved structural functioning of normal flood control and reduced occurrence of water shortage problems.
Topographical Changes in Torrential Stream After Dredging in Erosion Control Dam - Using Terrestrial LiDAR Data -
Seo, Junpyo ; Woo, Choongshik ; Lee, Changwoo ; Kim, Kyongha ; Lee, HeonHo ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 392~401
DOI : 10.14578/jkfs.2014.103.3.392
This research was carried out to understand the impact of mountainous torrent on topographical change of slope and sediment volume within a deposit line by dredging of soil erosion control dam. Terrestrial LiDAR surveys were conducted at dredged and non-dredged sites. Terrestrial LiDAR has an advantage on detecting topographical changes easily without demanding workmanship and technical skill for users. The distribution of erodible slope (
) was higher in non-dredged site than that of dredged site. However, the distribution was higher in dredged site than that of non-dredged site after rainy season. Erosion and deposition appeared regularly in a dredged site, but those occurred irregularly in the non-dredged site. The inflow of soil per square meter was 1.7 times higher in dredged site than that of non-dredged site after rainy season. The difference of rainfall in each site did not affect to soil erosion. The distribution of erodible slope was increased in dredged site than that of non-dredged site after rainy season due to inflow of soil from upper stream caused by dredging.
A Study on the Cutting Optimal Power Requirements of Fast Growing Trees by Circular Saw
Choi, Yun Sung ; Kim, Dae Hyun ; Oh, Jae Heun ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 402~407
DOI : 10.14578/jkfs.2014.103.3.402
In this study, Italy poplar(Populus euramericana) was selected for test specimen to measure cutting power when it harvested. The experiment has been controlled as three levels of feed rate (0.41, 1.25 and 2.5 m/s), sawing speed (800, 1,000 and 1,200 rpm), and the five levels of root collar diameter (50, 70, 90 and 110, 130 mm). The harvested volume after 3 years (root collar diameter 50 mm) was 10.5 tons, which falls short of the target amount of biomass is 20~30 ton/ha. In addition, the biomass amount of diameter 90 and 110 mm which reached the target amount were estimated to be 23.5 and 32.5 ton/ha respectively. As a result of experiment, it was found out that power of 128.2 and 175.8 W are consumed in case of cutting with the feed rate of 0.41m/s and minimum sawing speed (800 rpm) respectively. With the working area of 0.3 ha/h, it is considered to present working capacities of 16.5 and 22.8 ton/h respectively. The power consumed at the feed rate of 1.25 m/s is estimated to be 113.8 and 153.7W respectively and working capacity in a working area of 1 ha/h is estimated to be 23.5 and 32.5 ton/h. The power consumed at the feed rate of 2.5 m/s is estimated to be 119.8 and 166.9 W respectively and working capacity in a working area of 2 ha/h is estimated to be 47.0 and 65.5 ton/ha respectively. Therefore, the power source of harvest machine at the feed rate of 1.25, 2.50 m/s and sawing speed of 800 rpm shall be selected as it can process the target amount of estimated biomass.
Analysis of Flora and Vegetation in Forest Road Slopes Along to Constructions Age
Choo, Gapcheol ; Park, Jae-Hyeon ; Ma, Ho-Seop ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 408~421
DOI : 10.14578/jkfs.2014.103.3.408
This study was carried out to investigate flora and vegetation in cutting slope along a construction age sequence (2007, 2009, 2010, 2011, 2012) of forest roads in Yongchiri, Younghyunmyon, Sacheonshi, Geyongsangnamdo. Mean slopes of the cutting and banking slopes of forest roads constructed were ranged from
. Soil texture in the cutting and banking sides of forest roads constructed in 2012 was loam, while sandy loam in the cutting and banking slopes of forest roads constructed between 2007 and 2011. Vegetation cover percentage was higher in the banking slopes (66%) than the cutting slopes (49%) of forest roads. Total flora were higher in the banking slopes (50 species) than the cutting slopes (46 species) of forest roads. Species diversity was generally higher in the banking slopes than in the cutting slopes in all forest roads. In addition, the species diversity index was the highest in the cutting slopes (1.4015) of forest roads constructed in 2011, while the highest in the banking slopes (1.5603) of forest roads constructed in 2012. The results indicate that evenness index in the cutting and banking slopes of recent construction roads was high compared with old construction roads because of the distribution of simple plant species.
Growth Monitoring of Korean White Pine (Pinus koraiensis) Plantation by Thinning Intensity
Choi, Jungkee ; Lee, Byungki ; Lee, Daesung ; Choi, Inhwa ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 422~430
DOI : 10.14578/jkfs.2014.103.3.422
This study was conducted to investigate growth changes of DBH, height, crown width, volume, stem biomass, and dead trees after thinning treatments with different thinning intensity for Korean white pine (Pinus koraiensis) plantation. First thinning was applied with 29~69% intensity based on number of trees in 19-yearold plantation, and trees were measured three times: right after thinning (19-year-old), 5 years later (24-yearold), 12 years later (29-year-old). In the case of DBH growth, average DBH growth of heavily thinned plots was 19.6~19.9% higher 5 years later, and 13.3~24.7% higher 12 years later, compared to that of unthinned plots. Initial diameter growth rate was higher than late growth rate. The proportion of large pole candidates (
) was 31% in heavily thinned plot while only 2% was shown in unthinned plot. No difference was shown in height growth depending on plots, and average crown width growth in heavily thinned plots was 30.6~33.3% higher, 5 years later, and 35.0~40.0% higher, 12 years later, compared to that of unthinned plots. Average volume growth of individual trees in heavily thinned plots was 39.8~46.8% higher, 5 years later, and 23.0~52.0% higher, 12 years later, compared to unthinned plots. The maximum volume and biomass per unit area were shown in unthinned plot; the volume and biomass 5 and 12 years later after thinning were
(51 kg/ha) and
(132 kg/ha), respectivily. The significant difference appeared in crown width, volume, and biomass depending on thinning intensity. No dead trees occurred in heavily thinned plots for 12 years after thinning, while mortality rate in unthinned plots was 27.9~37.8%. As a result of analyzing annual increment using cores to determine the timing of second thinning, it suggested that second thinning be suitable around 10 years after first thinning.
Mapping and Assessment of Forest Biomass Resources in Korea
Son, Yeong Mo ; Lee, Sun Jeoung ; Kim, Sowon ; Hwang, Jeong Sun ; Kim, Raehyun ; Park, Hyun ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 431~438
DOI : 10.14578/jkfs.2014.103.3.431
This study was conducted to assess forest biomass resource which is a carbon sink and a renewable resource in Korea. The total forest biomass resource potential was 804 million tons, and conifers, broadleaved forest and mixed forest accounted for 265 million tons, 282 million tons, and 257 million tons, respectively. Proportionately to regional forest stocks, biomass potential of Gangwon-do had most biomass potential, followed by Gyeongsangbuk-do and Gyeongsangnam-do. The woody biomass from the byproduct of sawn timber in commercial harvesting was 707 thousand ton/year, and that from the byproduct of forest tending was 592 thousand ton/year. The amount resulted in about 1,300 thousand ton/year of potential supplies from forest biomass resource into the energy market. It's tonnage of oil equivalent(toe) was 585 thousand ton/year. In this study, we developed a program (BiomassMap V2.0) for forest biomass resource mapping. Used system to develop this program was Microsoft Office Excel, Microsoft Office Access ArcGIS and Microsoft Visual Basic 6.0. Additionally, This program made use of tool such as ESRI MapObjects2.1 in order to take advantage of spatial information. This program shows the map of total biomass stock, annual biomass growth at forest land in Korea, and biomass production from forest tending and commercial harvesting. The information can also be managed by the program. The biomass resource map can be identified by regional and forest type for the purpose of utilization. So, we expect the map and program to be very useful for forest managers in the near future.
A Study on the Baseline Carbon Stock for Major Species in Korea for Conducting Carbon Offset Projects based on Forest Management
Kim, Young-Hwan ; Jeon, Eo-Jin ; Shin, Man-Yong ; Chung, Il-Bin ; Lee, Sang-Tae ; Seo, Kyung-Won ; Pho, Jung-Kee ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 439~445
DOI : 10.14578/jkfs.2014.103.3.439
In this study, we developed a dynamic stand yield model to estimate the baseline carbon stock, which is essentially required for a forest carbon offset project based on forest management. For developing the yield model, the data was acquired from the databases of the
National Forest Inventory. The model was validated by comparing its estimations with field measurements that were conducted from 4 study sites (14 plots with thinning treatments) located in Hong-chun, Hoeng-sung, Yang-yang Daechi and Yang-yang Jungja. The difference between the estimations and the field measurements was less than 5%. Using the dynamic stand yield model, we estimated the changes in stand yield volume and carbon stocks for each species according to the baseline scenarios. As the results, we found that baseline carbon stock was the highest at Quercus acutissima stand (83.01tC/ha), while the lowest at Pinus rigida stand (32.17tC/ha) and Pinus densiflora stand of central region (39.09tC/ha). Hence, a project provider could get more carbon emission credits from an improved forest management project when considering the project with Pinus rigida stand or Pinus densiflora stand (central region). The baseline carbon stock and the dynamic stand yield model developed from this study would be useful for designing carbon offset projects based on improved forest management.
Estimation of Growing Stock and Carbon Stock based on Components of Forest Type Map: The case of Kangwon Province
Kim, So Won ; Son, Yeong Mo ; Kim, Eun Sook ; Park, Hyun ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 446~452
DOI : 10.14578/jkfs.2014.103.3.446
This research aimed to provide a method to estimate growing stock and carbon stock using the characteristics of forest type map such as the age-class, DBH class and crown density class. We transformed the growing stock data of national forest inventory (mainly Kangwon-do province) onto those of time when the forest type map was established. We developed a simulation model for the growing stock using the transformed data and the characteristics of forest type map by the quantification method I. By comparing partial correlation coefficient, we found that quantification of growing stock was largely affected by age-class followed by crown density class, forest type and DBH class. The growing stock, was estimated as minimum in the broadleaved forest with age-class II, DBH class 'Small', and crown density class 'Low' as
, whereas showed maximum value in the coniferous forest with age-class VI, DBH class 'Large', and crown density class 'High' as
. The growing stock for coniferous, broadleaved, and mixed forest were estimated as
, respectively. When we compared the carbon stock by forest type, the carbon stock by age class based on growing stock was maximum when DBH class was 'Large' and crown density class was 'High' regardless of forest type. This estimation of growing stock by using characteristic of forest type can be used to estimate the changes in growing stock and carbon stock resulting from deforestation or natural disaster. In addition, we hope it provide a useful advice when forest officials and policy makers have to make decisions in regard to forest management.
Valuing Estimation of forest healing function of Jangseong Healing Forest
Kim, Jin-Seon ; Kim, Eui-Gyeong ; Kim, Dong-Hyun ; Shin, Hye-Jin ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 453~461
DOI : 10.14578/jkfs.2014.103.3.453
As interest in 'Forest therapy' continues to increase, local governments as well as Korea Forest Service (KFS) are actively promoting a project to create 'healing forests' nationwide. In this situation, it is necessary to examine whether such a policy is suitable. Therefore, the main purpose of this study is to estimate the use value of Jangseong healing forest which is the most-visited place among the national healing forests. To achieve this aim, a survey of randomly selected 400 visitors was conducted in Jangseong healing forest. 391 surveys were used for analysis, excluding 9 untruthful answers. And 1.5 bounded dichotomous choice contingent valuation method (CVM) was used to estimate the economic value of Jangseong healing forest. As a result, the average willingness to pay (
) for the use fee of Jangseong healing forest was 35,010 won per visitor per day. And the annual use value of Jangseong healing forest was estimated to be worth almost 7.5 billion won.
Outlook of Wood Products Markets with Supply and Demand Model
Lee, Sang-Min ; Kim, Kyeong-Duk ; Song, Seong-Hwan ; Bark, Ji-Eun ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 462~472
DOI : 10.14578/jkfs.2014.103.3.462
This study is aimed at developing a supply-demand model of wood products, and outlook for mid-term and long-term supply and demand for each products. The main wood products include sawnwood, plywood, particle board, fiberboard (MDF), and pulp. The partial equilibrium model is composed of supply function, import demand function, demand function, price relation function. With given parameters the outlook for year 2050 says that sawnwood, plywood, and fiberboard for domestic productions and imports are decreased. This may result from the increase of log prices from the inside and outside of the country because of the propensity for environment protection and the resource nationalism. On the other hand the supply of particle board and pulp will increase because they are made from wasted wood and chips.
A Study on the Effects of Soundscapes on Forest Landscape Preference
Min, Su-Hui ; Lee, Chun-Yong ; Joo, Woo-Yeong ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 473~482
DOI : 10.14578/jkfs.2014.103.3.473
The objective of this study was to understand the effects of soundscapes on forest landscape preference in the Baekdudaegan protected area. The study sites were selected in Jeombongsan and Sobaek National park selected within the Baekdudaegan. The landscape preference surveys were conducted by using landscape adjectives classified with Nature, Sound, Attractiveness, and Aesthetics. The comparative analyses examined the difference of preferences between only visual landscapes and visual landscapes with soundscapes. The research found out that soundscapes were associated with landscape characteristics, and positively correlated with the improvement in landscape preference. Thus, the research can infer that forest landscape assessment consider visual attributes as well as soundscape cues.
Relationship between NVOCs Concentration and Korean Red Pine (Pinus densiflora S. et Z.) Forest Environment in Spring Season
Kim, GeonWoo ; Kwon, ChiWon ; Yeom, DongGeol ; Joung, Dawou ; Choi, Yoon Ho ; Park, Bum-Jin ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 483~489
DOI : 10.14578/jkfs.2014.103.3.483
This study aimed at a scientific examination of the relationship between NVOCs concentration and the physical environment of red pine forest in spring season. Atmospheric NVOC samples in red pine forest was collected through five trials conducted from March to May 2013, using Tanax-Ta-charged disposable tubes and mini-pumps. At each trial, measurements were taken at three different points in daytime (sunrise, southing and sunset). For maximum accuracy, two tubes were used for each measurement at the same location, and the mean value was used for analysis. Compound analysis on the NVOC samples was done using the HS-SPME method and GC-MS. Analysis of the relationship between NVOC and the physical forest environment found higher concentrations of most substances, including
-pinene, with higher temperature, dew point, and lower concentrations with higher wind velocity. The findings of this study offer scientific evidence which can inform the creation of 'healing forests' and 'recreational forests' as well as forest environment in general, helping to promote public health and recreational activities.
Analysis of Standard Income Regarding the Cultivation of Non-Timber Forest Products - Focused on major nuts and fruits -
Kang, Hag Mo ; Chang, Cheol Su ; Choi, Soo Im ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 490~502
DOI : 10.14578/jkfs.2014.103.3.490
This study investigates the cultivation processes of major nuts and fruits such as Ginkgo biloba L., Vitis coignetiae, Actinidia arguta Planch, Rubus coreanus Miq., and Rubus crataegifolius and analyzes standard income in order to provide foundational data necessary to make reasonable policies related with the criteria of compensating the loss of forest products or diagnosis of forestry management. According to the research results, the types of cultivation by items can be largely divided into open field culture and mountainous culture. Regarding the average annual income per unit area (3.3) by items, the open field culture of Ginkgo biloba L. was 1,060 Won, mountainous culture of Ginkgo biloba L. was 618 Won, open field culture of Vitis coignetiae was 5,891 Won, mountainous culture of Actinidia arguta Planch was 8,113 Won, open field culture of Rubus coreanus Miq. was 14,701 Won, and open field culture of Rubus crataegifolius was 17,482 Won or so; thus, the average annual income of Rubus coreanus Miq. and Rubus crataegifolius was very higher than that of the other items. In particular, because the production of Rubus crataegifolius starts two years after the planting and they rely on family labor mainly for the cultivation, the expenses for employment and labor were analyzed to be low. In addition, the analysis shows that at most of the nuts and fruits cultivation, initial investment costs for facilities or seedlings occupy a great part as about 30% averagely out of the management cost, so it is thought that the government should provide proper support to vitalize the cultivation.
Effects of Forest-Walking Exercise on Functional Fitness and Gait Pattern in the Elderly
Choi, Jong-Hwan ; Shin, Chang-Seob ; Yeoun, Poung-Sik ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 503~509
DOI : 10.14578/jkfs.2014.103.3.503
The purpose of this study was to investigate the effect of Forest-walking exercise on gait pattern in the elderly. The subjects (n=37) were assigned to 2 groups: Forest-walking exercise (FWE) group (n=19,
years old) and In-door treadmill-walking exercise (ITWE) group (n=18,
years old). The subjects participated in FWE program or ITWE program (3 times/week, 80 min/day) for 12 weeks. The subjects were tested on functional fitness (strength, endurance, agility/balance, BMI) and gait pattern (cadence, velocity, and stability) at the beginning and the end of the 12-weeks program. For data analysis, mean and standard deviation scores were calculated, and independent t-test and repeated two-way ANOVA were used. The results of this study were as follow: First, FWE group was significantly more improved than ITWE group on functional fitness(lower-body muscular strength, lower-body flexibility, mobility, cardiorespiratory endurance) after 12-weeks exercise program. But both groups showed equally improvements on functional fitness (upper-body muscular strength, upper-body flexibility, BMI). Second, FWE group was significantly more improved than ITWE group on cadence, gait velocity, and gait stability after 12-weeks exercise program. Therefore, this study may suggest that Forest-walking exercise based on sensory-motor functional integration improves efficiently functional fitness and gait pattern in the elderly, and further becomes an effective exercise method that makes more dynamic life, and prevents from falling.
Selection of the Rubbing Trees by Wild Boar (Sus scrofa) and its Ecological Role in a Mixed Forest, Korea
Lee, Seong-Min ; Lee, Woo-Shin ;
Journal of Korean Forest Society, volume 103, issue 3, 2014, Pages 510~518
DOI : 10.14578/jkfs.2014.103.3.510
Conflicts between humans and wild boars (Sus scrofa) have increased because of causing crop damage and appearing in downtown. Management to reduce population size has mostly been implemented on pests, but knowledges about ecological values are very rare. Rubbing trees by wild boar was investigated to figure out characteristics and for management ecologically from July to October 2013 in a mixed forest, Geochang, Gyeongnam Province, Korea. Pinus rigida was most frequently founded, and rubbing trees, both conifers and deciduous, were mainly located in 200~600 m above sea level. DBH was no significant difference between rubbing and control trees. The use intensity of conifers was higher than that of deciduous. The coverage of foliage layers and the number of woody plants within a radius of 2.5 m of trees (rubbing and control) were also investigated and compared to determine ecological characteristics. There were 1,332 individuals founded from 25 families. In the coverage of foliage layers, the understory and midstory showed statistically significant, but not in the subover and overstory. The number of Shrubs and saplings are higher in rubbing trees than those of control, but no difference in stems. Total individuals, the number of species, species diversity index(H') within a radius 2.5 m is considerably higher in rubbing trees with high intensity than those of low intensity and control. Our results show that wild boar mainly selected and used conifers more frequently as rubbing trees. Wild boar also modified the physical environments around rubbing trees. Consequently, the positive effects such as species diversity is increase. Thus the conservation policies is required after the intensive population reduction every 3-4 years for forest ecological management rather than annual sustainable hunting.