Indonesian Journal of Forestry Research最新文献

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THE EFFECT OF CLIMATE ON THE RADIAL GROWTH OF SCOTS PINE (PINUS SYLVESTRIS L.) IN A COASTAL MIXED STAND IN KAPISUYU, BARTIN, TURKEY 气候对土耳其巴丁Kapisyu沿海混交林樟子松径向生长的影响
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-10-31 DOI: 10.20886/ijfr.2021.8.2.187-197
H. Özel, B. Yaman, T. Varol
{"title":"THE EFFECT OF CLIMATE ON THE RADIAL GROWTH OF SCOTS PINE (PINUS SYLVESTRIS L.) IN A COASTAL MIXED STAND IN KAPISUYU, BARTIN, TURKEY","authors":"H. Özel, B. Yaman, T. Varol","doi":"10.20886/ijfr.2021.8.2.187-197","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.187-197","url":null,"abstract":"Scots pine is geographically the most widespread pine species in the world, and it shows different growth responses to climate and environmental factors in diverse ecological sites. We studied both the stand dynamics and climate-growth relationships of Scots pine in isolated coastal stand (recently found) in the Western Black Sea Region of Turkey. The homogeneity index of this stand has varied between 1.92-3.56. In growth-ring analyses, after cross-dating of individual chronologies, COFECHA and ARSTAN software were used respectively for chronology quality control and standardization (detrend). In this way, a 58-year-long chronology (1959-2016) of Scots pine was constructed. In addition, DENDROCLIM software was used for investigating Scots pine’s radial growth-climate relationships. Mean sensitivity changed from 0.163 to 0.331, with a mean of 0.183. Mean correlation among trees and signal to noise ratio were 0.389 and 7.012 respectively. In terms of the effect of precipitation on the radial growth of Scots pine in this site, the correlation coefficients were 0.43 (p<0.05) for December of the previous year and 0.41 (p<0.05) for July of the current year. For all the other months, precipitation had a non-significant effect. As for the maximum and mean air temperature, the correlation coefficients were 0.36 (p<0.05) and 0.40 (p<0.05) for February, and 0.40 (p<0.05) and 0.42 (p<0.05) for March, respectively. However, on the radial growth, while the maximum temperature in August had a negative effect (r= -0.26; p<0.05), minimum temperatures in February, March and July had a positive effect (r= 0.39, 0.40 and 0.34 respectively; p<0.05). It means while higher rains in July and higher temperatures in the late winter-early spring have caused the wider growth rings, the narrower growth rings have been formed in the years with higher maximum temperatures in August in the isolated coastal site of Scots pine.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42472255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
COMMUNITY STRUCTURE AND REGENERATION STATUS OF TREE SPECIES IN KYONGNOSLA ALPINE SANCTUARY, EASTERN HIMALAYA, INDIA 印度东喜马拉雅京诺斯拉高山保护区树种群落结构及更新状况
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-10-31 DOI: 10.20886/ijfr.2021.8.2.241-257
S. Lahiri, S. Dash
{"title":"COMMUNITY STRUCTURE AND REGENERATION STATUS OF TREE SPECIES IN KYONGNOSLA ALPINE SANCTUARY, EASTERN HIMALAYA, INDIA","authors":"S. Lahiri, S. Dash","doi":"10.20886/ijfr.2021.8.2.241-257","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.241-257","url":null,"abstract":"Habitat destruction, over exploitation, monoculture are major reasons for loss of primary forests in Himalaya. Tree population, composition and diversity particularly in the temperate Himalaya play a key role in the maintenance of many ecosystem services and natural biogeochemical cycles. The present study explores composition and regeneration status of tree species in a temperate mixed forest in Kyongnosla Alpine Sanctuary, East Sikkim, India.  Two sites at an elevation range of 2800–3800 m were selected and 20 plots of 20 m × 20 m for trees, 80 plots of 5 m × 5 m for saplings, and 160 plots of 1 m × 1 m for seedlings were sampled to study the regeneration status. A total of 17 tree species belonging to 9 genera and 8 families were recorded of which Rhododendron was the most dominant genus with maximum number of species. All the phytosociological attributes, such as relative density, abundance and important value index were calculated. The average species richness of adult trees and saplings was 13.5± 0.7 and for seedlings it was 12.5 ± 0.07. The mean density of seedlings was 3609.77 ± 494.39 individuals/ ha, for saplings  1540 ± 113.13 individuals/ha and of mature trees  548.75 ± 8.83 individuals/ha. Total basal area cover ranged from 36.61 to 40.35 m2/ha for trees, from 1.54 to 1.71 m2/ha for saplings.  Fair regeneration was observed in 64.72% of total species; good regeneration observed in 17.64% species, 11.76 % species exhibited poor regeneration while 5.88% showed no regeneration.  Density-diameter distribution exhibited decrease in tree densities towards higher DBH classes. The study not only provides reliable information on the ecosystem’s health of the sanctuary but also will help in understanding the complexity of the ecosystem function and an approach to conservation of biota.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45691195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
IMPORTANCE OF SOCIAL CHARACTERISTIC OF COMMUNITY TO SUPPORT RESTORATION PROGRAM IN PROTECTION FOREST 社区社会特征对支持防护林恢复计划的重要性
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-10-31 DOI: 10.20886/ijfr.2021.8.2.173-186
C. Wulandari, P. Budiono, D. Iswandaru
{"title":"IMPORTANCE OF SOCIAL CHARACTERISTIC OF COMMUNITY TO SUPPORT RESTORATION PROGRAM IN PROTECTION FOREST","authors":"C. Wulandari, P. Budiono, D. Iswandaru","doi":"10.20886/ijfr.2021.8.2.173-186","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.173-186","url":null,"abstract":"A restoration program is needed by West Lampung District, because  80% of the protected forests in this district have been damaged. Bina Wana (BW) Community Forest Group (CFG) has been successful in carrying out restoration program of 465 ha of Bukit Rigis protected forest. It resulted in an 80% increase in its members' income and an increase by 2.58% of the forest cover. To maintain the success of a sustainable restoration program, high commitment from the community is needed. This research has been conducted in June-July 2019 at West Lampung District, Lampung Province, Indonesia. The objective of this research is to analyse the social variables that affect restoration in the protection forest. The dependent variable is income and independent variables consist of respondents’ characteristics as individuals and social characteristics of the community. Based on the multiple regression linear analysis from 75 respondents, it was found that the significant variables for the sustainability of the restoration of Bukit Rigis protected forest are as follow: age, sex, education, status in CFG, distance from home to CF areas, social aids and social capital (networks, norms and trust). Existence of the youth groups namely Himpunan Pemuda Peduli Hutan dan Lingkungan (HPPHL) and Melati Women Forest Farmer Group (WFFG) plays an  important role in implementing the restoration program. Establishment of HPPHL will ensure regeneration in maintaining the sustainability of restoration achievements. The role of WFFG is also important because their households’ income is supported by WFFG and enables the BW CFG members to be more concentrated in maintaining forest sustainability.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49132821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
EFFECT OF STEM DIAMETER, MEDIA TYPE AND LIGHT INTENSITY ON THE GROWTH OF MEDICINAL PLANT OF SCREW TREE/KAYU ULES (Helicteres isora Linn.) 茎粗、介质类型和光照强度对药用植物螺杆树/KAYU rules生长的影响
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-10-31 DOI: 10.20886/ijfr.2021.8.2.213-227
D. Pamungkas, A. Umroni, N. A. Prasetyo
{"title":"EFFECT OF STEM DIAMETER, MEDIA TYPE AND LIGHT INTENSITY ON THE GROWTH OF MEDICINAL PLANT OF SCREW TREE/KAYU ULES (Helicteres isora Linn.)","authors":"D. Pamungkas, A. Umroni, N. A. Prasetyo","doi":"10.20886/ijfr.2021.8.2.213-227","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.213-227","url":null,"abstract":"Screw tree (Helicteres isora) is a shrub species (Fam: Malvaceae) with 1.5–4 m in height and  with multi-main trunks up to 9–12. In Indonesia, kayu ules has been used as a traditional medicine, known as jamu, and has been commercialized. In order to cultivate this species, vegetative propagation is likely promising compared to the generative propagation since seed viability is low and cannot be stored for longterm. Nevertheless, there is a lack of information on which diameter classes, media types and light intensities would give the best result for vegetative propagation. This research aimed to obtain information on which diameter classes and media that were suitable for kayu ules stem cutting propagation and to what degree the light intensity would be best for the growth of the seedlings of kayu ules. Three diameter classes and four media types were employed in a  complete random design under the greenhouse environment.   Three months old good quality vegetatively-propagated seedlings were transplanted under two light intensities (under transparent canopy and shading net). The result showed that  considering the factor of diameter classes and media in kayu ules stem cutting propagation, it had improved the survival of the stem cutting. Diameter class I was best grown in media type 3 with 46.67 ± 12.2 % of survival rate, diameter class II was best grown in media type 2 with 38.67 ± 11.6 % of survival rate, whereas diameter class III was best grown in media type 4 with 52 ± 6.9 % of survival rate. The transplanted seedlings also grew significantly better under transparent canopy with higher light intensity. The distinctive features of screw tree under shading net were wider leaf area, higher specific leaf area and relative water content but it was lower in above ground dry biomass compared to the kayu ules under transparent canopy.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46537148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
BIOACTIVITY ANALYSIS OF Annona glabra L. SEED EXTRACTS FOR WOOD PROTECTION AGAINST TERMITES (Cryptotermes cynocephalus Light. AND Coptotermes curvignathus Holmgren.) 光光番荔枝种子提取物对木材防白蚁的生物活性分析。和白蚁(Coptotermes curvignathus Holmgren)
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-10-31 DOI: 10.20886/ijfr.2021.8.2.127-134
T. Priadi, Nurul Chotimah, A. Ismanto
{"title":"BIOACTIVITY ANALYSIS OF Annona glabra L. SEED EXTRACTS FOR WOOD PROTECTION AGAINST TERMITES (Cryptotermes cynocephalus Light. AND Coptotermes curvignathus Holmgren.)","authors":"T. Priadi, Nurul Chotimah, A. Ismanto","doi":"10.20886/ijfr.2021.8.2.127-134","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.127-134","url":null,"abstract":"Pond apple (Annona glabra L.) belongs to the family of Annonaceae. The seed of A. glabra contains bioactive substance that is toxic to some organisms, however the effectiveness to control wood degrading termites has not yet been scientifically reported.  This research analyzes the efficacy of A. glabra seed extract to wood degrading termites. Seed extraction was conducted using n-hexane and ethyl acetate. The paper disc test showed that the extract of A. glabra is toxic to Cryptotermes cynocephalus (dry-wood termites) and Coptotermes curvignathus (subterranean termites). The higher extract concentration (up to 63%) resulted in a higher termite mortality (up to 100%) and lower weight loss of paper sample (less than 1%).  Ethyl acetate extract of A. glabra seeds has a better toxicity effect than n-hexane extract against dry wood termites and subterranean termites.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41577394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FIXATION PROCESS OF LAMINATED BAMBOO COMPRESSION FROM CURVED CROSS-SECTION SLATS 弯曲截面板条层压竹材的固定过程
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-10-31 DOI: 10.20886/ijfr.2021.8.2.159-171
T. Darmawan, A. Bahanawan, D. S. Adi, W. Dwianto, N. Nugroho
{"title":"FIXATION PROCESS OF LAMINATED BAMBOO COMPRESSION FROM CURVED CROSS-SECTION SLATS","authors":"T. Darmawan, A. Bahanawan, D. S. Adi, W. Dwianto, N. Nugroho","doi":"10.20886/ijfr.2021.8.2.159-171","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.159-171","url":null,"abstract":"Removing the outer part of bamboo for manufacturing flat bamboo lamination has disadvantage on the density of the product. The purpose of this experiment was to investigate the fixation of compressed bamboo from curved cross-section slats. The compression of bamboo slats using densification technique was aimed for uniform density. Furthermore, steam treatments were conducted to fix the deformation. The compressed bamboo slats revealed that the density of the samples at the bottom parts increased from 0.40–0.56 g/cm3 to 0.89–1.05 g/cm3 after pressing with a compression level between 46.98–63.97%, while the samples in the middle parts increased from 0.70–0.83 g/cm3 to 1.02–1.18 g/cm3 with the compression level of 32.92–41.50%. These results were slightly higher than that of the upper parts, which was between 0.91–0.98 g/cm3. The recovery of set decreased and the weight loss increased with  increasing  temperature and steam treatment time. Fixation of compressive deformation could be achieved at 160°C within 60 minutes. The bottom parts of samples experienced a slightly greater weight loss compared to the middle parts, i.e. 8.38% and 7.49%, respectively. The anatomical structure of bamboo tended to deform during densification process. Furthermore, the steam treatments affected  the colour of densified bamboo which became darker. From this experiment, it can be concluded that the manufacture of laminated bamboo from bamboo slats can be uniformed in strength by equalizing the density at the bottom and middle with the upper parts through the densification technique. However, further research should be conducted to know the delamination and shear strength of the bamboo lamination.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44572356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
STAKEHOLDERS' MAPPING AND STRATEGY FOR RESTORING PEATLAND FOREST IN WEST TANJUNG JABUNG JAMBI, INDONESIA 印度尼西亚西部tanjung jabung jambi泥炭地森林恢复的利益相关者测绘和战略
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-04-30 DOI: 10.20886/IJFR.2021.8.1.37-57
Ignatius Adi Nugroho, Darwo Darwo, Dhany Yuniarti
{"title":"STAKEHOLDERS' MAPPING AND STRATEGY FOR RESTORING PEATLAND FOREST IN WEST TANJUNG JABUNG JAMBI, INDONESIA","authors":"Ignatius Adi Nugroho, Darwo Darwo, Dhany Yuniarti","doi":"10.20886/IJFR.2021.8.1.37-57","DOIUrl":"https://doi.org/10.20886/IJFR.2021.8.1.37-57","url":null,"abstract":"Peatland forests became the centre of discussions in Indonesia because 33% of 2.4 million hectares burned in 2014. This research aims to describe the stakeholders' position and their logic in choosing a strategy for peatland forest areas. The result shows that nine stakeholders were actively involved in peatland forest restoration in West Tanjung Jabung Regency. Based on categorization, the analysis points out that all stakeholders had occupied key players' position. Further analysis using a ladder of participation criteria found two models of participation, i.e. citizen power and tokenism. However, the value of citizen power is higher than tokenism that is 56% and 44%, respectively. It means that stakeholders should develop partnership and other models in citizen power criteria to reach their targets. It also means that trust is an essential variable in the relationship among stakeholders and should be developed in peatland forest restoration. The consequence of this research is that stakeholders can improve two strategies, i.e. collaborative forest management and community-based forest management.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48094188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
PROBIOTIC CANDIDATE PROTEOLYTIC Bacillus sp. COLLECTED FROM MANGROVE OF MARGASARI, LAMPUNG 产自LAMPUNG MARGASARI MANGROVE的PROBIOTIC CANDIDATE蛋白酶解芽孢杆菌
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-04-30 DOI: 10.20886/IJFR.2021.8.1.73-82
S. Sumardi, Komang Rima, S. Farisi, E. Widiastuti
{"title":"PROBIOTIC CANDIDATE PROTEOLYTIC Bacillus sp. COLLECTED FROM MANGROVE OF MARGASARI, LAMPUNG","authors":"S. Sumardi, Komang Rima, S. Farisi, E. Widiastuti","doi":"10.20886/IJFR.2021.8.1.73-82","DOIUrl":"https://doi.org/10.20886/IJFR.2021.8.1.73-82","url":null,"abstract":"Intensive shrimp culture has encountered many problems, such as declining water quality through disease caused by pathogenic microbes, which affected mortality. This study aimed to determine any potential probiotic from Bacillus sp. collected from mangrove in East Lampung, which could be used to improve the cultured shrimps' proteolytic and probiotic activity. This is a descriptive research with sampling and data collection of bacteria from many samples of mangrove. Result shows 128 isolates Bacillus from which then it has arrived at five potential probiotic Bacillus sp. The study five Bacillus sp. has been isolated with potential properties for probiotic (KPP212, IP121, UJ131, UJ132, SB141). Each isolate has characteristics with proteolytic property, growth in a wide range of pH 4–10 and osmotic stress (0–6% NaCl), non-pathogenic, ability for glucose fermentation, non-motile, and has negative catalase activity. The five potential Bacillus sp. can be used as probiotics for shrimp farming.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":"8 1","pages":"73-82"},"PeriodicalIF":0.4,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49387070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
WORK MEASUREMENT STUDY ON MOTOR-MANUAL PINE TAPPING OPERATION: THE APPLICATION OF THE CONCEPT OF LEAN MANUFACTURING AND ALLOWANCES 汽车采松作业计量研究&精益生产与津贴概念的应用
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-04-30 DOI: 10.20886/IJFR.2021.8.1.111-125
E. Y. Yovi, Diah Prasetiana, Natasha Aquilla Nirmalasari
{"title":"WORK MEASUREMENT STUDY ON MOTOR-MANUAL PINE TAPPING OPERATION: THE APPLICATION OF THE CONCEPT OF LEAN MANUFACTURING AND ALLOWANCES","authors":"E. Y. Yovi, Diah Prasetiana, Natasha Aquilla Nirmalasari","doi":"10.20886/IJFR.2021.8.1.111-125","DOIUrl":"https://doi.org/10.20886/IJFR.2021.8.1.111-125","url":null,"abstract":"Derivated products of  pine resin have been recognised as competitive commodities in global trade, increasing the need to use resources more efficiently.  A hand-held tapping machine with small hoe-shape cutters called “mujitek” has been widely applied in Indonesia among efforts to answer this challenge. In this study, a series of  observed (actual) work time data were measured and analysed, adopting lean manufacturing to calculate the basic and standard time of  the work and estimate the work produced on the tapping operation. Work elements were identified based on their contribution to change or transform the product and were categorised as value-added, non-value-added, and special allowance.  Quantitative data on the work productivity in the tapping operation can be used as one fundamental data in determining a work plan to establish a continuous improvement process. The variable fatigue allowances taken into account in this study were standing posture, abnormal posture, muscular energy, atmospheric conditions, and noise.  This study shows that non-value-added work elements (repairing machines, chatting, and smoking) cause inefficiency in tapping operation.  Analysis of  added-value work elements proved that this hand-held tapping machine offers a higher (1.7 times) work productivity than conventional hand-held tapping tools. However, since humans have limitations in the physical, physiological, and mental dimensions that limit their ability to carry out work at a certain level, the discovered work productivity level should also be validated with other thresholds, e.g., physical workload and risk perception.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":"8 1","pages":"111-125"},"PeriodicalIF":0.4,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47026533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
THE INFLUENCE OF STAND DENSITY AND SPECIES DIVERSITY INTO TIMBER PRODUCTION AND CARBON STOCK IN COMMUNITY FOREST 林分密度和物种多样性对群落森林木材产量和碳储量的影响
IF 0.4
Indonesian Journal of Forestry Research Pub Date : 2021-04-30 DOI: 10.20886/IJFR.2021.8.1.13-22
P. Wirabuana, R. Setiahadi, R. Sadono, M. Lukito, D. S. Martono
{"title":"THE INFLUENCE OF STAND DENSITY AND SPECIES DIVERSITY INTO TIMBER PRODUCTION AND CARBON STOCK IN COMMUNITY FOREST","authors":"P. Wirabuana, R. Setiahadi, R. Sadono, M. Lukito, D. S. Martono","doi":"10.20886/IJFR.2021.8.1.13-22","DOIUrl":"https://doi.org/10.20886/IJFR.2021.8.1.13-22","url":null,"abstract":"THE INFLUENCE OF STAND DENSITY AND SPECIES DIVERSITY INTO TIMBER PRODUCTION AND CARBON STOCK IN COMMUNITY FOREST. Stand density and species diversity are two indicators that are highly related to forest productivity. However, the effect of those variables on the productivity of community forest is rarely documented. This study evaluates the influence of stand density and species diversity on timber production and carbon stock in the community forest. The study area was located in Madiun District. A field survey was conducted in four different community forest sites, i.e. Morang, Kuwiran, Randualas, and Kare. The sampling technique was by quadrat method using a sample plot size of 25 m x 25 m. The number of sample plots used in this study was 64 units, which were evenly distributed in every site. Comparison of stand attributes among sites was examined by Kruskal-Wallis test and followed by Kruskal-Nemenyi test on the effects of stand density and species diversity on timber production and carbon stock were assessed separately for each parameter using the generalized least square regression test. The process of statistical analysis was applied using a significance level of 5%. Results show a significant difference in stand volume, aboveground biomass, and carbon stock among sites (P<0.05). This study also recorded a meaningful effect of stand density and species diversity on timber production and carbon stock of community forest, wherein stand density provided a higher effect (R2 = 0.68; P<0.05) than species diversity (R2 = 0.26; P<0.05).","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":"8 1","pages":"13-22"},"PeriodicalIF":0.4,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45236621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
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