Pub Date : 2022-04-22DOI: 10.26525/jtfs2022.34.2.199
N. Nascimento, Fag Guilherme, K. Ressel, G. Ferreira, Ses Carneiro, G. Silva
{"title":"GALLERY FORESTS FLORA AND TREE STRUCTURE REINFORCE ATLANTIC FOREST OCCURRENCE IN BRAZILIAN CENTRAL PLATEAU","authors":"N. Nascimento, Fag Guilherme, K. Ressel, G. Ferreira, Ses Carneiro, G. Silva","doi":"10.26525/jtfs2022.34.2.199","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.2.199","url":null,"abstract":"","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46929545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-22DOI: 10.26525/jtfs2022.34.2.176
M. Saifuddin, N. Osman
{"title":"EVALUATION OF ROOT PROFILES AND ENGINEERING PROPERTIES OF PLANTS FOR SOIL REINFORCEMENT","authors":"M. Saifuddin, N. Osman","doi":"10.26525/jtfs2022.34.2.176","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.2.176","url":null,"abstract":"","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43371198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-22DOI: 10.26525/jtfs2022.34.2.187
H. Li, K.M. Nitanan
Fireflies in Kuala Selangor, Malaysia are threatened by habitat destruction, soil degradation and light pollution. The main objective of this study was to estimate the local tourists' willingness to pay a conservation fee at Kampung Kuantan Firefly Park. The best data collection method chosen in the midst of the Covid-19 pandemic was an online questionnaire survey. The study used a purposive sampling technique, as only those who visited Kampung Kuantan Firefly Park were eligible to complete the online survey. The willingness to pay questionnaire was developed using the Open-Ended Contingent Valuation Method. A total of 385 respondents were included for data analysis. The results of Tobit regression analysis indicated that age, education, gender and attitude had significant relationship with willingness to pay. Based on the willingness to pay estimate equation, the overall mean willingness to pay for the conservation fee was 9.44 RM per visit. The research findings will assist policymakers in taking the obligatory actions to protect and conserve precious natural resources and provide information to the natural park department in order to achieve a sustainable ecotourism plan for Kampung Kuantan Firefly Park in Kuala Selangor, Malaysia. [ FROM AUTHOR] Copyright of Journal of Tropical Forest Science is the property of Forest Research Institute of Malaysia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)
{"title":"LOCAL VISITORS’ WILLINGNESS TO PAY FOR CONSERVATION FEE AT KAMPUNG KUANTAN FIREFLY PARK, KUALA SELANGOR, MALAYSIA","authors":"H. Li, K.M. Nitanan","doi":"10.26525/jtfs2022.34.2.187","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.2.187","url":null,"abstract":"Fireflies in Kuala Selangor, Malaysia are threatened by habitat destruction, soil degradation and light pollution. The main objective of this study was to estimate the local tourists' willingness to pay a conservation fee at Kampung Kuantan Firefly Park. The best data collection method chosen in the midst of the Covid-19 pandemic was an online questionnaire survey. The study used a purposive sampling technique, as only those who visited Kampung Kuantan Firefly Park were eligible to complete the online survey. The willingness to pay questionnaire was developed using the Open-Ended Contingent Valuation Method. A total of 385 respondents were included for data analysis. The results of Tobit regression analysis indicated that age, education, gender and attitude had significant relationship with willingness to pay. Based on the willingness to pay estimate equation, the overall mean willingness to pay for the conservation fee was 9.44 RM per visit. The research findings will assist policymakers in taking the obligatory actions to protect and conserve precious natural resources and provide information to the natural park department in order to achieve a sustainable ecotourism plan for Kampung Kuantan Firefly Park in Kuala Selangor, Malaysia. [ FROM AUTHOR] Copyright of Journal of Tropical Forest Science is the property of Forest Research Institute of Malaysia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44906358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-22DOI: 10.26525/jtfs2022.34.2.149
P. Kumar, A. Chaturvedi, V. Vaishnav
{"title":"RELATIONSHIP BETWEEN ENDOGENOUS AUXIN (INDOLE- 3-ACETIC ACID) AND ADVENTITIOUS ROOTING IN DALBERGIA SPECIES OF DIFFERENT ROOTING ABILITY","authors":"P. Kumar, A. Chaturvedi, V. Vaishnav","doi":"10.26525/jtfs2022.34.2.149","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.2.149","url":null,"abstract":"","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":"64 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41295662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-26DOI: 10.26525/jtfs2022.34.1.63
LG Aribal, Jason A. Parlucha, JN Gelaga, R. Aguinsatan
The study examines the gross morphology of giant bamboo (Dendrocalamus asper) relative to varying elevation, temperature, and relative humidity in five forest areas of Bukidnon province in the Philippines. Results revealed that variations in leaf sizes and the number of nodes and internodes among elevation ranges were not significant. However, the culm length of giant bamboo was significantly higher in the mid-elevation range (644–892 m asl) and lower elevation range (344–447 m asl) compared to culms in higher elevations. In addition, differences in culm diameter and culm thickness were significant showing larger diameter and thicker culms in the mid-elevation range (644–892 m asl) as compared to the higher (1117–1124 m asl) and lower (344–347 m asl) elevation range. The level of phosphorus and nitrogen was the highest in the mid and lower elevation range while potassium level was abundant in the highest elevations. Correlation analysis showed a negative relationship between culm lengths to elevation and relative humidity while mid and top section diameters were negatively correlated to temperature until 892 m asl. Leaf area and leaf width were strongly influenced by phosphorus level. The canonical correspondence analysis showed culm lengths were affected by relative humidity and elevation while the number of nodes and internodes, top and mid-section culm thickness, average diameter and basal section diameters were affected by temperature. Non-metric multidimensional scaling revealed that variation in bamboo morphology occured at the lowest and highest elevation while overall similarity was observed at 600–900 m asl elevation, suggesting an optimal growth for giant bamboo might be within the range.
这项研究考察了菲律宾武吉农省五个林区巨竹（Dendrocalamus asper）在不同海拔、温度和相对湿度下的毛形态。结果表明，不同海拔范围的叶片大小、节数和节间数变化不显著。然而，与高海拔地区的竹竿相比，中海拔地区（644–892 m asl）和低海拔地区（344–447 m asr）的巨竹竹竿长度显著较高。此外，与较高（1117–1124 m asl）和较低（344–347 m asl。磷和氮含量在中、低海拔地区最高，钾含量在高海拔地区丰富。相关分析表明，直到海拔892米，茎秆长度与海拔和相对湿度呈负相关，而中上段直径与温度呈负相关。叶片面积和宽度受磷水平的影响很大。典型对应分析表明，茎长受相对湿度和海拔高度的影响，节数和节间数、顶端和中段茎厚、平均直径和基部直径受温度的影响。非度量多维尺度分析表明，竹子形态的变化发生在最低和最高海拔处，而在海拔600–900米处观察到总体相似性，这表明巨竹的最佳生长可能在该范围内。
{"title":"INFLUENCE OF ABIOTIC FACTORS ON GROWTH AND DEVELOPMENT OF GIANT BAMBOO (DENDROCALAMUS ASPER) IN BUKIDNON, PHILIPPINES","authors":"LG Aribal, Jason A. Parlucha, JN Gelaga, R. Aguinsatan","doi":"10.26525/jtfs2022.34.1.63","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.1.63","url":null,"abstract":"The study examines the gross morphology of giant bamboo (Dendrocalamus asper) relative to varying elevation, temperature, and relative humidity in five forest areas of Bukidnon province in the Philippines. Results revealed that variations in leaf sizes and the number of nodes and internodes among elevation ranges were not significant. However, the culm length of giant bamboo was significantly higher in the mid-elevation range (644–892 m asl) and lower elevation range (344–447 m asl) compared to culms in higher elevations. In addition, differences in culm diameter and culm thickness were significant showing larger diameter and thicker culms in the mid-elevation range (644–892 m asl) as compared to the higher (1117–1124 m asl) and lower (344–347 m asl) elevation range. The level of phosphorus and nitrogen was the highest in the mid and lower elevation range while potassium level was abundant in the highest elevations. Correlation analysis showed a negative relationship between culm lengths to elevation and relative humidity while mid and top section diameters were negatively correlated to temperature until 892 m asl. Leaf area and leaf width were strongly influenced by phosphorus level. The canonical correspondence analysis showed culm lengths were affected by relative humidity and elevation while the number of nodes and internodes, top and mid-section culm thickness, average diameter and basal section diameters were affected by temperature. Non-metric multidimensional scaling revealed that variation in bamboo morphology occured at the lowest and highest elevation while overall similarity was observed at 600–900 m asl elevation, suggesting an optimal growth for giant bamboo might be within the range.","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48306642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-26DOI: 10.26525/jtfs2022.34.1.103
Fsp Ng, I. Zubir, Z. Zurfatiha, Dsk Sharma, A. Latiff, Z. Hazrina, A. Shahira, H. Shah- Redza
The Malay Archipelago, also known as Malesia, is customarily divided into nine ecogeographical regions. In any comparison between these regions, Borneo usually stands out with the highest number of species, but if the number of species is divided by land area to obtain a regional species intensity index, the Malay Peninsula stands out prominently, not only for plants but also for mammals, reptiles, amphibians and fish. This striking pattern across the taxonomic spectrum suggests that the forces driving speciation have been more intense in the Malay Peninsula than in other regions of the Archipelago. The Malay Peninsula also stands out in comparison with countries in continental South- East Asia. Possible contributory factors to the intensity of speciation may be the height and structure of dipterocarp forests, the rate of tree turnover and the phenomenon of mass flowering.
{"title":"SPECIATION IN THE MALAY PENINSULA IN RELATION TO DIPTEROCARP FOREST HEIGHT, STRUCTURE, TURNOVER, AND REPRODUCTIVE BIOLOGY","authors":"Fsp Ng, I. Zubir, Z. Zurfatiha, Dsk Sharma, A. Latiff, Z. Hazrina, A. Shahira, H. Shah- Redza","doi":"10.26525/jtfs2022.34.1.103","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.1.103","url":null,"abstract":"The Malay Archipelago, also known as Malesia, is customarily divided into nine ecogeographical regions. In any comparison between these regions, Borneo usually stands out with the highest number of species, but if the number of species is divided by land area to obtain a regional species intensity index, the Malay Peninsula stands out prominently, not only for plants but also for mammals, reptiles, amphibians and fish. This striking pattern across the taxonomic spectrum suggests that the forces driving speciation have been more intense in the Malay Peninsula than in other regions of the Archipelago. The Malay Peninsula also stands out in comparison with countries in continental South- East Asia. Possible contributory factors to the intensity of speciation may be the height and structure of dipterocarp forests, the rate of tree turnover and the phenomenon of mass flowering.","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48433000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-26DOI: 10.26525/jtfs2022.34.1.48
T. Wijewickrama, I. Karunaratne, S. Wijesundara, S. Madawala
Some native plants expand their populations rapidly in their home ranges, altering their structure and composition. Bambusa bambos, a native bamboo species, shows a rapid population expansion in tropical moist evergreen forests in the intermediate climatic zone, Sri Lanka. The present study was conducted to evaluate its impacts on the regeneration potential of other native forest species. The seedling emergence, survival and mortality were observed for a period of one year using quadrats laid along 18 transects marked from the forest edge towards the forest interior in forest patches with and without bamboo (+Bb and –Bb, respectively). The results revealed a higher abundance, richness and diversity of seedlings in +Bb than in -Bb, with lianas and herbs contributing more to these differences. However, tree seedlings showed higher turnover rates (recruitment and mortality) in -Bb, indicating their preference for undisturbed habitats. Tree and shrub seedlings survived better in -Bb forests while liana and herbaceous seedlings displaying the opposite. The results indicate that B. bambos spread showed an ability to alter the regeneration potential of native forests probably resulting bamboo-driven changes to micro-environmental conditions in the forest floor.
{"title":"IMPACTS OF BAMBUSA BAMBOS SPREAD ON SEEDLING RECRUITMENT, MORTALITY AND REGENERATION POTENTIAL OF NATIVE SPECIES IN TROPICAL MOIST EVERGREEN FORESTS OF SRI LANKA","authors":"T. Wijewickrama, I. Karunaratne, S. Wijesundara, S. Madawala","doi":"10.26525/jtfs2022.34.1.48","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.1.48","url":null,"abstract":"Some native plants expand their populations rapidly in their home ranges, altering their structure and composition. Bambusa bambos, a native bamboo species, shows a rapid population expansion in tropical moist evergreen forests in the intermediate climatic zone, Sri Lanka. The present study was conducted to evaluate its impacts on the regeneration potential of other native forest species. The seedling emergence, survival and mortality were observed for a period of one year using quadrats laid along 18 transects marked from the forest edge towards the forest interior in forest patches with and without bamboo (+Bb and –Bb, respectively). The results revealed a higher abundance, richness and diversity of seedlings in +Bb than in -Bb, with lianas and herbs contributing more to these differences. However, tree seedlings showed higher turnover rates (recruitment and mortality) in -Bb, indicating their preference for undisturbed habitats. Tree and shrub seedlings survived better in -Bb forests while liana and herbaceous seedlings displaying the opposite. The results indicate that B. bambos spread showed an ability to alter the regeneration potential of native forests probably resulting bamboo-driven changes to micro-environmental conditions in the forest floor.","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41829362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-26DOI: 10.26525/jtfs2022.34.1.74
E. Basri, K. Yuniarti, Saefudin
The study aimed to investigate the effect of thermal compression on the properties of 8-year-old waru gunung wood. Wood specimens with the dimension of 25 mm100 mm150 mm in thickness, width and length, respectively were heated at 180 ˚C and 200 ˚C for 4 h. During the heating process, the specimens were subsequently compressed at 2.452 N mm−2 for 40 mins at each temperature. Changes in the wood chemical structure were examined using the pyrolysis-gas chromatography-mass spectrometry, the wood physical properties were tested according to ASTM D143-94, the wood surface hardness was tested using a Universal Testing Machine and the wood discoloration was examined using the CIELab method. The changes in crystallinity degree was examined using x-ray diffraction and cell structure were collected as supporting data. Results showed that the thermal compression at 180 ˚C and 200 ˚C caused severe degradation on the specimen carbohydrate but less for lignin. The sum effect of thermal compression on the specimens also consecutively increased the density by 34.24% and 41.87% and surface hardness by 52.78% and 63.09% and decreased the swelling thickness by 38.54% and 47.03% and the equilibrium moisture content by 36.53% and 38.59% at 180 ˚C and 200 ˚C, respectively. Thermally compressed specimens also had darker colours, glossier surfaces and smoother texture compared to non-thermally compressed specimens.
本研究旨在探讨热压缩对8年生华奴木材性能的影响。将厚度为25 mm100 mm、宽度为150 mm、长度为150 mm的木材试样分别在180℃和200℃下加热4 h。加热过程中，试样在每种温度下分别以2.452 N mm−2压缩40 min。采用热解-气相色谱-质谱法检测木材化学结构的变化，按照ASTM D143-94测试木材的物理性能，采用万能试验机测试木材表面硬度，采用CIELab方法检测木材变色。用x射线衍射法检测了结晶度的变化，并收集了细胞结构作为支持数据。结果表明，180℃和200℃的热压缩对碳水化合物的降解较为严重，而对木质素的降解较少。在180˚C和200˚C温度下，热压缩对试样的综合效应使试样的密度分别提高34.24%和41.87%，表面硬度分别提高52.78%和63.09%，膨胀厚度分别降低38.54%和47.03%，平衡含水率分别降低36.53%和38.59%。与非热压缩标本相比，热压缩标本颜色更深，表面更光滑，纹理更光滑。
{"title":"THERMAL COMPRESSION EFFECT ON SEVERAL PROPERTIES OF 8-YEAR-OLD WARU GUNUNG (HIBISCUS MACROPHYLLLUS) WOOD","authors":"E. Basri, K. Yuniarti, Saefudin","doi":"10.26525/jtfs2022.34.1.74","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.1.74","url":null,"abstract":"The study aimed to investigate the effect of thermal compression on the properties of 8-year-old waru gunung wood. Wood specimens with the dimension of 25 mm100 mm150 mm in thickness, width and length, respectively were heated at 180 ˚C and 200 ˚C for 4 h. During the heating process, the specimens were subsequently compressed at 2.452 N mm−2 for 40 mins at each temperature. Changes in the wood chemical structure were examined using the pyrolysis-gas chromatography-mass spectrometry, the wood physical properties were tested according to ASTM D143-94, the wood surface hardness was tested using a Universal Testing Machine and the wood discoloration was examined using the CIELab method. The changes in crystallinity degree was examined using x-ray diffraction and cell structure were collected as supporting data. Results showed that the thermal compression at 180 ˚C and 200 ˚C caused severe degradation on the specimen carbohydrate but less for lignin. The sum effect of thermal compression on the specimens also consecutively increased the density by 34.24% and 41.87% and surface hardness by 52.78% and 63.09% and decreased the swelling thickness by 38.54% and 47.03% and the equilibrium moisture content by 36.53% and 38.59% at 180 ˚C and 200 ˚C, respectively. Thermally compressed specimens also had darker colours, glossier surfaces and smoother texture compared to non-thermally compressed specimens.","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46252909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-26DOI: 10.26525/jtfs2022.34.1.24
A. Menon, RG Vishnu-Menon
Management of forest fire is one of the top priority activities of forest departments, both in tropics and temperate regions. Extensive amount and intensive efforts are deployed to combat fire. The results of a case study on forest fire prone mapping conducted at Periyar tiger reserve in Western Ghats of Kerala, India, was highlighted, and based on the study, the implementation of fire management strategies were discussed. The fire risk map was validated with the forest fire inventory points of Forest Survey of India. Forest fire is a frequent occurrence in tropical forests, especially in moist deciduous and dry deciduous regions. Though forest fire management is one of the major activities of forest departments, the forest fire mitigation is not 100% successful. The magnitude of forest fire, its frequency, potential location, etc., can be assessed using Geoinformatics techniques, by giving different weightage status to fire controlling factors. A case study was conducted on these lines and control measures were highlighted using different management strategies. The implementation of the desired action plan for sustainable development and conservation of forests can be successful only by getting the full support and confidence of the stakeholders. The stakeholder support for environmental management aspects is possible only by convincing them that they are directly or indirectly getting the benefits by the proposed action. Usually, most of the environmental management activities may lead to nontangible benefits, which is apparently non-visible, hence getting stakeholder support may not be an easy task. Various marketing strategies needs to be used to convince the beneficiaries to implement good conservation practices for the betterment of the local inhabitants.
{"title":"MANAGEMENT STRATEGIES FOR PREVENTION OF FOREST FIRE AND ENVIRONMENTAL DEGRADATION IN TROPICS WITH SPECIAL REFERENCE TO WESTERN GHATS OF KERALA REGION, INDIA","authors":"A. Menon, RG Vishnu-Menon","doi":"10.26525/jtfs2022.34.1.24","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.1.24","url":null,"abstract":"Management of forest fire is one of the top priority activities of forest departments, both in tropics and temperate regions. Extensive amount and intensive efforts are deployed to combat fire. The results of a case study on forest fire prone mapping conducted at Periyar tiger reserve in Western Ghats of Kerala, India, was highlighted, and based on the study, the implementation of fire management strategies were discussed. The fire risk map was validated with the forest fire inventory points of Forest Survey of India. Forest fire is a frequent occurrence in tropical forests, especially in moist deciduous and dry deciduous regions. Though forest fire management is one of the major activities of forest departments, the forest fire mitigation is not 100% successful. The magnitude of forest fire, its frequency, potential location, etc., can be assessed using Geoinformatics techniques, by giving different weightage status to fire controlling factors. A case study was conducted on these lines and control measures were highlighted using different management strategies. The implementation of the desired action plan for sustainable development and conservation of forests can be successful only by getting the full support and confidence of the stakeholders. The stakeholder support for environmental management aspects is possible only by convincing them that they are directly or indirectly getting the benefits by the proposed action. Usually, most of the environmental management activities may lead to nontangible benefits, which is apparently non-visible, hence getting stakeholder support may not be an easy task. Various marketing strategies needs to be used to convince the beneficiaries to implement good conservation practices for the betterment of the local inhabitants.","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41395396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-26DOI: 10.26525/jtfs2022.34.1.92
S. Sunarti, A. Nirsatmanto, J. Brawner, T. Setyaji, D. Kartikaningtyas, BR Handayani, Surip, F. Hidayati
Breeding of Acacia mangium in Indonesia was initially focused on selection for improving growth and stem form. Changes in wood density which resulted from selection for improved growth was impacted by adverse correlation between the both traits. This study aimed to quantify genetic gain in the diameter and wood density from two A. mangium breeding generations and to use this information in developing breeding strategy to improve both traits simultaneously. Materials were obtained from 4.5-year-old trees in a progeny trial consisting of families from first (F-1) and second (F-2) generations along with infused families (F-0) as control. Genetic gain was calculated as the percent increase in diameter and wood density from F-1 and F-2 over the control. Diameter and wood density from F-1 and F-2 were higher than F-0. Genetic gains for diameter increased from 3.7% in F-1 to 7.0% in F-2. Conversely, gain for wood density decreased from 1.9% in F-1 to 0.3% in F-2. Correlations between diameter and wood density varied from weak to moderate along the stem sections. The results imply a combined approach incorporating selection for diameter and wood density in mixed-breeding generations will provide simultaneous improvement in both traits.
{"title":"EFFECT OF GENETIC GAIN IN DIAMETER AND WOOD DENSITY ON ADVANCED GENERATION BREEDING STRATEGY OF ACACIA MANGIUM IN INDONESIA","authors":"S. Sunarti, A. Nirsatmanto, J. Brawner, T. Setyaji, D. Kartikaningtyas, BR Handayani, Surip, F. Hidayati","doi":"10.26525/jtfs2022.34.1.92","DOIUrl":"https://doi.org/10.26525/jtfs2022.34.1.92","url":null,"abstract":"Breeding of Acacia mangium in Indonesia was initially focused on selection for improving growth and stem form. Changes in wood density which resulted from selection for improved growth was impacted by adverse correlation between the both traits. This study aimed to quantify genetic gain in the diameter and wood density from two A. mangium breeding generations and to use this information in developing breeding strategy to improve both traits simultaneously. Materials were obtained from 4.5-year-old trees in a progeny trial consisting of families from first (F-1) and second (F-2) generations along with infused families (F-0) as control. Genetic gain was calculated as the percent increase in diameter and wood density from F-1 and F-2 over the control. Diameter and wood density from F-1 and F-2 were higher than F-0. Genetic gains for diameter increased from 3.7% in F-1 to 7.0% in F-2. Conversely, gain for wood density decreased from 1.9% in F-1 to 0.3% in F-2. Correlations between diameter and wood density varied from weak to moderate along the stem sections. The results imply a combined approach incorporating selection for diameter and wood density in mixed-breeding generations will provide simultaneous improvement in both traits.","PeriodicalId":17389,"journal":{"name":"Journal of Tropical Forest Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49430728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：