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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 100, Issue 4 - Dec 2011
Volume 100, Issue 3 - Sep 2011
Volume 100, Issue 2 - Jun 2011
Volume 100, Issue 1 - Mar 2011
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Development of Diameter Growth and Mortality Prediction Models of Pinus Koraiensis Based on Periodic Annual Increment
Kim, Seon-Young ; Seol, Ar-A ; Chung, Joo-Sang ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 1~7
The objective of this study was to improve the performance of the existing individual-tree/distantindependent stand growth model in predicting the growth of Pinus koraiensis forest stands. The parameters of diameter growth and mortality prediction models were estimated using periodic annual increment (PAI) of permanent plots and the performance of the models were compared with that of the existing ones using mean anuual increment (MAI). The diameter growth model includes crown ratio, potential diameter growth and modifier to compute for competitions of trees of a stand. In deriving the mortality prediction model, the parameters were estimated based on PAI which was also estimated as the function of MAI due to the lacking of permanent plot data. The results of this study showed that the newly-estimated functions based on PAI provide more realistic patterns in diameter growth of individual trees. The new approach using PAI in mortality model seems to overcome the over-estimate problem by the MAI-based model in estimating mortality of stand trees.
Changes of Photosynthesis, Leaf and Fruit Characteristics of Actinidia arguta and Hybrid Kiwi (A. arguta
A. deliciosa) According to Crown Layer
Park, Young-Ki ; Han, Jin-Gyu ; Hwang, Suk-In ; Kim, Sea-Hyun ; Kang, Moon-Su ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 8~13
This study was carried out to investigate the change of photosynthesis, leaf and fruit according to crown layers in Actinidia arguta and hybrid kiwi. Photosynthesis rate (PPFD
) were 5.82, 7.11,
at lower, middle, and upper position, respectively in 3 layer cultivation type. The length and area of leaves collected from lower position have lager value than upper position. The fruit quality of A. arguta and hybrid kiwifruit increased with increasing crown height. A linear correlation (
= 0.72, 0.89 and 0.98) was shown between fruit weight (Boeun 4, Injea 16 and HM3) and the height of crown layer(layer 1, 2, and 3). From the results, we can suppose that the tree of the upper position of crown layer in the cultivation of A. arguta and hybrid kiwifruit produce high quality fruit due to its high photosynthesis ability.
Enhancement of Anticancer Activity of Acer mono Aqueous Extracts by Nano-Encapsulation Process
Kim, Ji-Seon ; Jeong, Myoung-Hoon ; Choi, Woon-Yong ; Seo, Yong-Chang ; Cho, Jeong-Sub ; Lee, Hyeon-Yong ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 14~24
Anticancer activity of Acer mono aqueous extracts was enhanced by nano-encapsulation process of gelatin. The cytotoxicity on human normal lung cell (HEL299) of the extracts from WE (water extract at 100) showed 23.51%, lower than that from NE (nano-encapsulatioin of water extract of Acer mono) in adding the maximum concentration of 1.0 mg/mL. NE showed more potent scavenging effect as 73.15% than the WE. On SOD-like test, the NE showed highest activity as 32.33% at 1.0 mg/mL concentration. Human stomach adenocarcinoma, liver adenocarcinoma, breast adenocarcinoma and lung adenocarcinoma cell growth were inhibited up to about 59-73%, in adding 1.0 mg/mL of NE. NE was 15% higher than conventional water extraction. Among several cancer cell lines (stomach adenocarcinoma, liver adenocarcinoma), the growth of digestive related cancer cells were most effectively inhibited as about 71-73%. The size of nano particles was in the ranges of 100-200 nm, which can effectively the penetrate into the cells, it was observed by real time confocal microscope. It tells that the aqueous extracts of Acer mono bark could be definitely enhanced by nano-encapsulation process.
A Study on Development Standard Calculation Program of Forest Road Drainage Facilities
Choi, Yeon-Ho ; Lee, Joon-Woo ; Kim, Myeong-Jun ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 25~33
The purpose of this study is to develop a standard calculation program of forest road drainage facilities that may help forest road designers to design forest road drainage facilities more conveniently and precisely. Especially, the characteristics of this program is that the forest road designers may calculate the amount of outflow in the basin using rainfall intensity data conveniently, without the data designers should acquire through site measurements when they carry out indoor preliminary measurements before they go out for outdoor measurements. In this manner, excessive design may be restrained by offering minimum standard calculation for drainage structures. And also this study was designed to facilitate proper layout of drainage structures by calculating outflow discharge of each basin where forest roads will be installed. Especially, this study will contribute to leveling-up of forest design techniques as the researcher has prepared the reports on whole process of drain pipe installation and provided them in the form of computer file or printout, which show a rational design process, and make it possible to modify in case of an error.
Structure and Understory Species Diversity of Pinus parviflora - Tsuga sieboldii Forest in Ulleung Island
Cho, Yong-Chan ; Hong, Jin-Ki ; Cho, Hyun-Je ; Bae, Kwan-Ho ; Kim, Jun-Soo ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 34~41
Vegetation structure, composition and diversity were quantified for 10 samples (10 m
10 m) representing woody vegetation and for 30 samples (1 m
3 m) representing understory vegetation in Pinus parviflora and Tsuga sieboldii forest of Taeharyeong, Ulleung-gun (Gyeongsangbuk-do). P. parviflora was limitedly advanced to sapling layer from seedling stage, and based on Mantel tests, composition of canopy layer was not established in ground woody vegetation. Non-metric multidimensional scaling revealed influence of biotic and abiotic factors in species composition of woody and understory vegetation. In the result of multiple regression model, abundance of P. parviflora (density and breast height area) and percent cover of woody debris were significant predict variables for understory diversity. These results suggest that relatively large disturbance is required for regeneration of P. parviflora and T. sieboldii forest, and control of expansion of monocultural understory species that monopolize resources such as Carex blepharicarpa and Maianthemum dilatatum, is necessary for maintenance of diversity.
Correlation of Above- and Below-ground Biomass Between Natural and Planted Stands of Pinus densiflora for. erecta of One Age-class in Gangwon Province
Na, Sung-Joon ; Kim, Chang-Soo ; Woo, Kwan-Soo ; Kim, Hye-Jin ; Lee, Do-Hyung ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 42~51
This study was conducted to analyze correlation of above- and below-ground biomass and to drive regression equation suitable for estimating standing tree biomass between natural and planted stands of Pinus densiflora for. erecta of one age-class in Gangwon province, Republic of Korea. Total 40 trees, 10 from the naturally regenerated and 10 from the planted stands in each of two studied sites, were uprooted to measure height, diameter at root color (DRC), and the dry weights of stem, branches, and needles. The length, weight, and volume of the main and horizontal roots were also measured. Most of the above-ground traits except height were highly correlated with most of the other above-ground traits and the below-ground traits except the length of roots (p < 0.05). Especially, the DRC, which is measured easily on the standing tree, was highly correlated with most of the traits in all studied stands (p < 0.01). Thus, the DRC would be the most desirable trait to estimate not only above-ground biomass but also below-ground biomass. However, height was not a good variable to estimate standing tree biomass of Pinus densiflora for. erecta of one age-class in Gangwon province because it was not correlated with most of other traits. Regression equations derived from the current study could be used effectively as a basic data for estimating above-ground and below-ground biomass using DRC.
Longitudinal Pattern of Large Wood Distribution in Mountain Streams
Seo, Jung-Il ; Chun, Kun-Woo ; Kim, Min-Sik ; Yeom, Kyu-Jin ; Lee, Jin-Ho ; Kimura, Masanobu ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 52~61
Whereas recent researches have elucidated the positive ecological roles of large wood (LW) in fishbearing channels, LW is also recognized as a negative factor of log-laden debris flows and floods in densely populated areas. However in Republic of Korea, no study has investigated longitudinal variations of LW distribution and dynamic along the stream corridor. Hence to elucidate 1) physical factors controlling longitudinal distribution of LW and 2) their effect on variation in LW load amount, we surveyed the amount of LW with respect to channel morphology in a mountain stream, originated from Mt. Ki-ryong in Inje, Gangwondo. Model selection in the Generalized Linear Model procedure revealed that number of boulder (greater than or equal to 1.0 m in diameter), bankfull channel width and their interaction were the best predictors explaining LW load volume per unit channel segment area (unit LW load). In general, boulders scattered within small mountain streams influence LW retention as flow obstructions. However, in this study, we found that the effect of the boulders vary with the channel width; that is, whereas the unit LW load in the segment with narrow channel width increased continuously with increasing boulder number, it in the segment with wide channel width did not depend on the boulder number. This should be because that, in two channels having different widths, the rates of channel widths reduced by boulders are different although boulder numbers are same. Our findings on LW load varying with physical factors (i.e., interaction of boulder number and channel width) along the stream corridor suggest understanding for longitudinal continuum of hydrogeomorphic and ecologic characteristics in stream environments, and these should be carefully applied into the erosion control works for systematic watershed management and subsequent disaster prevention.
Height-DBH Growth Models of Major Tree Species in Chungcheong Province
Seo, Yeon-Ok ; Lee, Young-Jin ; Rho, Dai-Kyun ; Kim, Sung-Ho ; Choi, Jung-Kee ; Lee, Woo-Kyun ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 62~69
Six commonly used non-linear growth functions were fitted to individual tree height-dbh data of eight major tree species measured by the
National Forest Inventory in Chungcheong province. A total of 2,681 trees were collected from permanent sample plots across Chungcheong province. The available data for each species were randomly splitted into two sets: the majority (90%) was used to estimate model parameters and the remaining data (10%) were reserved to validate the models. The performance of the models was compared and evaluated by
, RMSE, mean difference (MD), absolute mean difference (AMD) and mean difference(MD) for diameter classes. The combined data (100%) were used for final model fitting. The results showed that these six sigmoidal models were able to capture the height-diameter relationships and fit the data equally well, but produced different asymptote estimates. Sigmoidal growth models such as Chapman-Richards, Weibull functions provided the most satisfactory height predictions. The effect of model performance on stem volume estimation was also investigated. Tree volumes of different species were computed by the Forest Resources Evaluation and Prediction Program using observed range of diameter and the predicted tree total height from the six models. For trees with diameter less than 30 cm, the six height-dbh models produced very similar results for all species, while more differentiation among the models was observed for large-sized trees.
Stochastic Simulation Model of Fire Occurrence in the Republic of Korea
Lee, Byung-Doo ; Lee, Yo-Han ; Lee, Myung-Bo ; Albers, Heidi J. ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 70~78
In this study, we develop a fire stochastic simulation model by season based on the historical fire data in Korea. The model is utilized to generate sequences of fire events that are consistent with Korean fire history. We employ a three-stage approach. First, a random draw from a Bernoulli distribution is used to determine if any fire occurs for each day of a simulated fire season. Second, if a fire does occur, a random draw from a geometric multiplicity distribution determines their number. Last, ignition times for each fire are randomly drawn from a Poisson distribution. This specific distributional forms are chosen after analysis of Korean historical fire data. Maximum Likelihood Estimation (MLE) is used to estimate the primary parameters of the stochastic models. Fire sequences generated with the model appear to follow historical patterns with respect to diurnal distribution and total number of fires per year. We expect that the results of this study will assist a fire manager for planning fire suppression policies and suppression resource allocations.
An Econometric Analysis of Mitigating Urban Heat Island Effect with Urban Forest
Kim, Dong-Hyeon ; Kim, Eui-Gyeong ; Yang, Jun-Seok ; Kim, Hyeon-Geun ; Shin, Hae-Jin ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 79~87
This study was conducted to identify the relationship between urban heat island effect and forest, analyzing electricity consumption model and temperature change model. Electricity consumption model was adopted to clarify a role of forests in alleviating the heat island effect at the national scale, while temperature change model was adopted to clarify a role of forests in mitigating urban heat island effect on metropolis with using econometric analysis. The analysis results from both models clearly show a negative correlation between the urban forests within living areas and heat island effect. In particular, when urban forests within living area per person increases by
, the average municipal electricity consumption decreases by 0.02MWh and the summer daytime temperature for metropolitan cities decreases by
Physiological Responses of Roadside Trees by Regional Groups and Species in Daejeon City
Kim, Dong-Il ; Park, Gwan-Soo ; Kim, Gil-Nam ; Lee, Hang-Goo ; Park, Beom-Hwan ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 88~94
This study was conducted to provide on a basic information for maintenance of roadside trees and identify the links between environmental pollution and tree damages (Ginkgo biloba, Platanus occidentalis) in Daejeon City by analyzing photosynthetic characteristics, water use efficiency, chlorophyll fluorescence and chlorophyll contents by the regions and plants. The investigations were conducted at Chungnam national university(CNU) considered as the least air-polluted area compared to other study sites, Daedeok science town(DS) which a new road with little traffic recently was built around, Daehwa industry complex(DIC) and Daejeon station(DS) which an old road with heavy is located around. The photosynthetic capacity of the two species were highest in CNU and lowest in the DS. However the water use efficiency was highest on the contrary to the photosynthetic capacity in DS. Chlorophyll fluorescence and chlorophyll contents were highest in CNU and lowest in DS as the photosynthetic capacity. On all of the test, Ginkgo biloba shows the more favorable physiological responses than Platanus occidentalis.
Distribution Types of the Relict Conifer Community and the Approach for the Ecological Management in Ulleung-Island
Cho, Hyun-Je ; Lee, Jung-Hyo ; Choo, Yeon-Sik ; Hong, Sung-Cheon ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 95~104
Distribution types of native conifers (Juniperus chinensis, Pinus parviflora, Tusga sieboldii and Taxus cuspidata var. latifolia) were studied by phytosociological investigation and ZM method in Ulleung Island, South Korea. Two main types were divided maritime vegetation (Juniperus chinensis forest) and mountain vegetation (Taxus cuspidata var. latifolia forest and Pinus parviflora-Tusga sieboldii forest). The former was divided into sea cliff distribution (J-SC) and sea ridge distribution (J-SR) type. The latter was classified 7 distribution types; Taxus cuspidata var. latifolia forest was rock distribution (Ta-R) and mountain slope distribution (Ta-MS) type, and Pinus parviflora-Tusga sieboldii forest was rock distribution (P T-R), upper and ridge distribution (P T-UR, 3 units sub-types:1sub, 2sub, 3sub), and Mountain slope distribution (P T-MS) type. It was considered that J-SC, Ta- R, and P T-R were maintained by topographic climax, but J-SR, Ta-MS, P T-UR and P T-MS were the process of vegetation succession. Distribution types of topographic climax are entrusted to process of vegetation succession. Types in the process of vegetation succession will be needed tending of forest to promote saplings growth and seedlings germination. Especially in order to restore Tsuga sieboldii forest should be afforest and make forest gap because It is mid shade tolerant tree and purity percentage of its seed is 1~2%. It was considered that the composition of group mixture forest constituted Pinus parviflora, Tsuga sieboldii, Taxus cuspidata, Camellia japonica, Machilus thunbergii and Acer okamotoanum, etc. will be able to restore native vegetation, after take the form of forest gap by strong thinning and pruning of Pinus thunbergii forest.
Influences of the Construction of the Torrent Control Structure using Customized Tetrapods on the Stream Water Quality at Valley
Park, Jae-Hyeon ; Ma, Ho-Seop ; Kim, Ki-Heung ; Youn, Ho-Joong ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 105~111
The purpose of this study was to find out the effect of a torrent control structure using customized tetrapods on the forest water quality conservation and management. The study was conducted in the Honggye valley located in Sanchung-gun, Gyungsangnam-do, and stream water quality was compared before and after construction of torrent control structure. After construction of the torrent control structure using customized tetrapods, pH of stream water didn't get out of the range of River water quality standard class I. After construction of the torrent control structure using customized tetrapods, Dissolved Oxygen concentration didn't change, and Electrical Conductivity measurements agreed well within the range of normal clean stream water quality. After construction of the torrent control structure using customized tetrapods, average of total amount of anion was 3.07/2.30~3.60 mg/L, being slightly greater than before construction. Stream water quality after construction of the torrent control structure was similar to before construction. Therefore, it was find out that the torrent control structure didn't affect stream water quality.
A Study on the Functional Feeding Groups and Community Stability of Benthic Macroinvertebrate in Forest Fire Area
Sim, Kwang-Sub ; Kim, Myoung-Eun ; Lim, Joo-Hoon ; Seo, Eul-Won ; Lee, Jong-Eun ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 112~117
This study was conducted for searching the functional feeding groups, and community stability of the macroinvertebrate on forest fire area of Uljin-gun. The samples were collected from 2 sites of control area and 2 sites of experimental area during 2007 to 2009. The identified species were 89 belonged to 47 families, 16 order, 6 class, and 4 phylum in control area. And 84 belonged to 43 families, 16 order, 6 class, and 4 phylum were identified in experimental area. As a result of changes in species and individuals of E.P.T. taxa investigated in experimental area by year, Ephemeroptera was 21 species, 2,434.6 inds./
, Plecoptera was 3 species, 199.8 inds./
, and Trichoptera 14 species, 540.2 inds./
in 2007. And in 2009, Ephemeroptera was 9 species, 296 inds./
, Trichoptera was 4 species, 44.4 inds./
, and Plecoptera was none, showing that species and individuals belonging to E.P.T. taxa decrease rapidly every year. Community analysis by year, in 2008 when the water system started to be influenced by the fire directly, it showed a trend that H' and RI decreased in the experimental area. Functional feeding group by year, it showed a trend that species and individuals of GC type which is a functional group picking up and eating FPOM (fine particulate organic matter) from deposits in the bottom of water or benthic areas and performs an important function of material circulation in ecosystem decrease every year. Community stability by year, an environment of water system in forest fire area started to be somewhat destroyed, from 2008, it is shown that both species in I area which have great ability of resistance and recovery and species in III area which live in relatively stable water system decreased a little.
Vegetation Types and Diversity Patterns of Pinus densiflora Forests in South Korea
Cho, Hyun-Je ; Lee, Chang-Bae ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 118~123
Pine (Pinus densiflora) forests of 315 sites were classified by applying the phytosociological method, TWINSPAN and DCA (detrended correspondence analysis). The floristic composition and diversity patterns of the vegetation types analyzed and documented. The vegetation types were classified 8 groups including 4 groups of Quercus mongolica type and 4 groups of Quercus serrata-Smilax china type. Taxonomically, Compositae was the most diverse family (21 genus, 45 species) and followed in order of Liliaceae (18 genus, 34 species), Rosaceae (17 genus, 34 species), and Leguminosae (15 genus, 25 species). The patterns of species richness, diveristy and evenness were significantly different among the vegetation types. In altitudinal pattern of species diversity, species richness monotonically decreased but species evenness increased with increasing altitude.
A Study on Forecasting Visit Demands of Korea National Park Using Seasonal ARIMA Model
Sim, Kyu-Won ; Kwon, Heon-Gyo ;
Journal of Korean Forest Society, volume 100, issue 1, 2011, Pages 124~130
This study was conducted to find out appropriate model and forecast visit demand of korea national parks using seasonal ARIMA model. Data of monthly visitors uses of 18 korea national parks from January, 2003 to December, 2010 was used to analyze. The result showed that ARIMA(1,0,0)
model was selected as a appropriate model to forecast visit demand of korea national parks and the result of post evaluation used by index of mean absolute percentage error was accurate. Therefore, the result of this study will enhance reliability and validity of forecasting technique and contribute to management strategy of korea national park.