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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Forest and Environmental Science
Journal Basic Information
Journal DOI :
Institute of Forest Science, kangwon National University
Editor in Chief :
Volume & Issues
Volume 31, Issue 4 - Nov 2015
Volume 31, Issue 3 - Aug 2015
Volume 31, Issue 2 - May 2015
Volume 31, Issue 1 - Feb 2015
Selecting the target year
Farmers Preference and Perception towards Cropland Agroforestry in Bangladesh
Chakraborty, M. ; Haider, M.Z. ; Rahaman, M.M. ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 241~254
DOI : 10.7747/JFES.2015.31.4.241
This study attempts to examine farmers' preference and perception towards cropland agroforestry (CAF) and its economic benefits in Bangladesh. It surveys 84 farmers of two sub-districts named Manirampur and Bagherpara under Jessore district of Bangladesh to address the study objectives with the help of a questionnaire during the period of June to July 2013. We follow a multistage random sampling procedure for selecting respondents of the survey. A total of 27 plant species under 19 families are identified in the surveyed crop fields, among which 11 are tree species and 1 is shrub from 8 families and 15 species are agricultural crops from 11 families. According to the survey findings, most of the farmers prefer multipurpose tree species like Swietenia macrophylla (67 percent), Phoenix sylvestris (48 percent), Mangifera indica (48 percent) and Cocos nucifera (43 percent). We also find that Curcuma longa (92 percent), Oryza spp. (56 percent), Solanum melongena (43 percent) and Amorphophallus campanulatus (33 percent) are the available agriculture crops which are grown in association with trees in the study area. The surveyed farmers report that they practice CAF to get fuel wood, fodder, juice, fruit and food for family consumption and revenue earnings. About 76 percent of the surveyed farmers endorse the existence of a positive interaction between trees and agriculture crops, while the rest 24 percent endorse the existence of a negative interaction between trees and agriculture crops. This study finds that CAF farmers on an average earn US$ 1,410 per farm per year and the yearly average revenue difference between CAF and non-cropland agroforestry (NCAF) farmers is US$ 214. Overall, CAF needs to develop through scientific intervention in the study area to conserve the biodiversity and to enhance farmers' sustainable livelihood.
Height Growth Models for Pinus thunbergii in Jeju Island
Park, Gildong ; Lee, Daesung ; Seo, Yeongwan ; Choi, Jungkee ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 255~260
DOI : 10.7747/JFES.2015.31.4.255
Height growth models for Pinus thunbergii in Jeju Island were developed in this study using four widely used nonlinear growth models; Exponential, Modified Logistic, Chapman-Richards, and Weibull. All functions were found to be significant at the 1% level. Chapman-Richards model for height-DBH allometry and Weibull model for height-age allometry was chosen as the best model on the all validation. All the model curves showed the similar pattern. Additionally, there was no abnormal pattern when the previous studies were compared. Therefore, these models are highly expected to be used to estimate the tree height using DBH or age for Pinus thunbergii especially in Jeju Island.
Analysis of Habitat Characteristics of the Yellow-throated Marten Martes flavigula (Carnivora : Mustelidae) Using Geographic Information System (GIS)
Lim, Sang-Jin ; Min, Ji-Hong ; Park, Yung-Chul ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 261~266
DOI : 10.7747/JFES.2015.31.4.261
We investigated habitat characteristics of the yellow-throated marten Martes flavigula (Carnivora : Mustelidae) using geographic information system (GIS). GPS coordinates of the target mammal traces and seven habitat factors were used for the GIS analysis. The Odaesan National Park (ONP) is selected as a study area for GIS analysis of the habitat characteristics. According to the GIS analysis of whole area of ONP, main forest type was broadleaf trees which occupy 72% of forests. Trees of 4th to 6th age-calss account for 93% of the ONP forests. The mean elevation and slope of ONP was 901 m and
, respectively. According to the GIS analysis of M. flavigula habitats in ONP, most M. flavigula traces were found in borad-leaf forests and coniferous forests which are main forest types of ONP. In addition, the yellow-throated marten recorded a relatively high appearance rate of 7% in unstocked forests, which account for much less than 1% of the area of ONP. Most of the marten traces were found in forests with trees of 4th to 6th age-classes. The traces were found in the forest types in higher elevation (1,080.3 m) and lower slope (
) on average, compared with those of ONP. Appearance rate of the marten traces was 96% in range less than 600 m from the water. The traces were frequently found in areas far distantly beyond 1,400 m range from human residental areas and cultivated areas.
The Within-tree Variation in Wood Density and Mechanical Properties and Their Relationship in Juniperus polycarpos
Kiaei, Majid ; Bakhshi, Reza ; Saffari, Mohsen ; Golkari, Sadegh ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 267~271
DOI : 10.7747/JFES.2015.31.4.267
The variations of wood density and mechanical properties of Juniperus polycarpos trees were studied in a natural forest in Iran. Sample disks were taken from each tree to examine wood density and mechanical properties (MOE and MOR) from pith to bark at breast height, 50%, and 75% of total tree height. The analysis of variance (ANOVA) indicated that radial position and height significantly affected all wood properties. The wood density, MOE and MOR were decreased along horizontal position from the pith to the bark and vertical direction from base upwards. Regression analysis showed that modulus of elasticity (MOE) and modulus of rupture (MOR) had a positive correlation with wood density.
Component Characteristics of Xanthoceras sorbifolium Seeds for Bioenergy Plant Utilization
Lee, Hyunseok ; Yi, Jaeseon ; An, Chanhoon ; Kim, Minsu ; Lee, Jeonghoon ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 272~279
DOI : 10.7747/JFES.2015.31.4.272
Xanthoceras sorbifolium is considered as bio-energy crops owing to the high oil content from kernel. This study was performed to analyze calorific value, crude ash content, ultimate ratio, crude lipid and fatty acid composition among seed sources. Calorific values ranged from
in seeds and kernels showed the highest value. Calorific values and crude ash contents were observed as significant difference among plantations and/or individuals (p>0.05). Kernel from SD-F plantation showed the highest calorific value and lower crude ash content. C content comprised 63.4%, the highest levels was detected from SD-F (64.8%). Crude lipid content in kernel observed as 54.5 g
from SD-F. In contrast it was determined the lowest value from LN-JARS as 46.5 g
. The fatty acid composition of kernel was determined to those of oleic acid (31.3%) and linoleic acid (38.1%) from SD-F and LN-JARS. These results will be offered to useful information for breeding materials selection.
Soil Properties in Two Forest Sites in Cox's Bazar, Bangladesh
Akhtaruzzaman, Md. ; Osman, K.T. ; Sirajul Haque, S.M. ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 280~287
DOI : 10.7747/JFES.2015.31.4.280
Soil samples were collected from three depths (0-10 cm, 10-40 cm and 40-80 cm) of two forest sites including one plantation dominated by teak with some other minor species and another degraded natural forest in Cox's Bazar, Bangladesh to compare their soil properties. Some vegetation parameters were also studied. For this study
quadrats were used for the tree and undergrowth parameters, respectively. Soil samples were also collected from these quadrats. Between the two forest types, the highest levels of organic carbon, total nitrogen, available phosphorus, exchangeable bases and cation exchange capacity (CEC) were found in soils of the plantation. The soils were acidic in nature and exchangeable Al concentrations were low. Teak dominated forest plantation had higher soil fertility index (SFI) than the degraded natural forest site. Steps for reforestation and appropriate protection are needed to improve the situation.
Study of Urban Land Cover Changes Relative to Demographic and Residential Form Changes: A Case Study of Wonju City, Korea
Han, Gab-Soo ; Kim, Mintai ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 288~296
DOI : 10.7747/JFES.2015.31.4.288
In many very high density cities in Asia in which there is limited area to expand, growth is forced upward as well as outward. Densely packed detached houses and low-rise buildings are replaced by lower density high-rises, leaving open spaces between high-rise buildings. Through this process, areas that formerly did not have much green space gain valuable green spaces, and new ecological corridors and patches are created. In this study, the demographic and housing-type changes of Wonju City were delineated using land use maps, aerial images, census data, and other administrative data. Green area changes were calculated using land cover data derived from multi-year Landsat TM satellite imagery. The values were then compared against demographic and housing-type changes for each administrative unit. The overall results showed a decrease of forested area in the city and an increase of developed area. Urban sprawl was clearly visible in many of the suburban areas. However, as expected, we also detected areas in which greenness did not decrease when the population greatly increased. These areas were characterized by residential building complexes of ten or more stories. If an equal number of housing units had been built as detached houses, these areas would not have kept as much green space. Our research result showed that high-density and high-rise residential structures can offer an alternative means to protect or create urban green spaces in high-density urban environments.
Biodegradability and Risk Assessment of Biomass-based Polymeric Materials
Han, Song Yi ; Park, Chan Woo ; Jang, Jae Hyuk ; Lee, Seung Hwan ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 297~302
DOI : 10.7747/JFES.2015.31.4.297
With the intention to solve environmental problems caused by synthetic plastics from petroleum resources, biodegradable polyurethane foams and thermosetting moldings were prepared from biomass, such as wood and wheat bran by liquefaction method. Biodegradability of these biomass-based polymeric materials was investigated. In activated sludge, polyurethane foams from liquefied wheat bran and thermosetting molding from phenolated wood were decomposed approximately 14% and 29% for 20 days, respectively. One of the wood fungi, Coriolus versicolor was able to grow without supplemental nutrition, only with distilled water and polyurethane foam as a nutrition source. Risk assessments were also conducted and results showed that estrogenicity, mutagenicity, and carcinogenicity were not observed in the extractives of biomass- based polymeric materials.
Performance of Acacia senegal (L.) Wild Seedlings Growth under some Tree Manures and NPK Fertilizers in Nursery Site
Daldoum, Daldoum Mohamed A. ; Hammad, Ghassan Habib ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 303~311
DOI : 10.7747/JFES.2015.31.4.303
This study aimed to assess the effects of tree manures in comparison with NPK fertilizer on growth of Acacia senegal seedlings. It was conducted in the nursery of the Faculty of Forestry, University of Khartoum, Shambat (Lat.:
39' 387" N and Long.:
30' 871" E), during August 2008 and January 2009. The growing media were prepared by mixing ground foliage of trees with sandy soil (weight/volume) as follows, Albizia lebbeck (AL): 25 g, 50 g and 75 g; Azadirachta indica (AZ): 25 g, 50 g and 75 g; Khaya senegalensis (KH): 25 g, 50 g and 75 g; NPK fertilizer: 30 g per seedling. Albizia lebbeck and Azadirachta indica manures and NPK fertilizer have stimulated the Acacia senegal seed germination percentage in comparison with the control, with respective values of 89, 82.7, 81 and 71%. Khaya senegalensis manure has suppressed the Acacia senegal seed germination percentage with a value of only 49%. Effects of treatments on the seedlings growth parameters varied in the following percentages, in comparison to the control, shoot height: AZ 62.9%, AL 46%, KH 9.9% and NPK 27.8%; root length: AZ 25.8%, AL 31.5%, KH 30.6% and NPK 4.4%; diameter: AZ 75.2%, AL 37.1%, KH 34.3% and NPK 20%; Shoot biomass: AZ 319%, AL 195.2%, KH 57.1% and NPK 42.9%; root biomass: AZ 288.9%, AL 116.7%, KH 55.6% and NPK 16.7%%;. Thus, the effectiveness of the used substrates on the growth performance of Acacia senegal seedlings occurred in the following descending order: Azadirachta indica> Albizia lebbeck>Khaya senegalensis>NPK fertilizer. These results assert clearly the ameliorative and fertilizing characteristics of tree manures that can be reliably used for raising seedlings stocks in the nurseries.
Effect of Sodium Chloride (NaCl) on the Mycelial Growth and Ascospore Germination of Rhizina undulata, the Root Rot Fungus of Coniferous Trees
Lee, Sun Keun ; Lee, Dong Hyeon ; Lee, Kyoung-Tae ; Park, Yong Bae ; Seo, Sang-Tae ; Lee, Jong Kyu ;
Journal of Forest and Environmental Science , volume 31, issue 4, 2015, Pages 312~316
DOI : 10.7747/JFES.2015.31.4.312
Rhizina undulata, the causal agent of Rhizina root rot, is a soil-borne fungus occurring on coniferous trees. The destruction of coastal forests caused by R. undulata infection has been mainly associated with bonfires at camping sites. However, Rhizina root rot was observed in the western coastal forests without fire. It was hypothesized that Rhizina root rot in this area might be closely related to the soil salinity, which can facilitate the growth and survival of R. undulata. So, the variation in sodium chloride (NaCl) resistance among isolates of Rhizina undulata was compared using liquid media containing different concentrations of NaCl ranging from 0 mM to 300 mM. Our results showed that, albeit of no growth at a higher concentration of NaCl (300 mM), most of R. undulata isolates were capable of germinating and grew at up to 100 mM, indicating that NaCl resistance varies among R. undulata isolates. It was further found that isolates from coastal areas seemed to be more tolerant to NaCl than those further away the coast. We demonstrated that R. undulata could be possible to survive in coastal areas, but was lower NaCl tolerance than other fungi.