Journal: Environment and Natural Resources Journal
609
Issued Date
2008
Resource Type
Language
eng
ISSN
2408-2384 (online)
1686-5456 (print)
1686-5456 (print)
Rights
Mahidol University
Rights Holder(s)
Faculty of Environment and Resource Studies Mahidol University
Journal Volumes
EnNRJ Volume 6
(2008)
EnNRJ Volume 7
(2009)
EnNRJ Volume 8
(2010)
EnNRJ Volume 9
(2011)
EnNRJ Volume 10
(2012)
Title
Environment and Natural Resources Journal
Alternative Title(s)
Environ. Nat. Resource. J.
Other Contributor(s)
Abstract
The Environment and Natural Resources Journal (Environ. Nat. Resour. J.) is a peer-reviewed and freely available online journal, published in six issues per year by the Faculty of Environment and Resource Studies, Mahidol University, Thailand. The journal publishes the original research articles in all areas of environmental science and natural resource management with emphasis on Asia and Southeast Asia. All articles are considered for publication in this journal with the understanding that they must not be previously published in another journal or simultaneously submitted for publication elsewhere. The journal follows the double-blind peer review process to maintain the quality in the published articles. The submitted manuscripts are evaluated by at least two independent reviewers in the relevant fields and must be approved by the editorial board before being accepted for publication.
Description
Indexed in international databases as follows: "Scopus [CiteScore: 0.05(June 2018)]", "Clarivate Analytics [BIOSIS Preview, Biological Abstracts, Zoological records]", "EBSCOhost", "Directory of Open Access Journals [DOAJ]" "ASEAN Citation Index [Indexed in national database "Thai-Journal Citation Index Centre [TCI]" Thai-Impact Factor 2016= 0.567ACI]"
4 issues a year
4 issues a year
Collections
90 results
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Now showing 1 - 10 of 90
Publication Open Access The estimation of Carbon storages in various growth stages of sugarcane in Si Sat Chanalai District, Sukhothai Province, Thailand(2009-12) Wachirawan Watcharapirak; Sura Pattanakiat; Charlie Navanugraha; Mahidol University. Faculty of Environment and Natural Resource StudiesThe objectives of this research was to estimate carbon storage in sugarcane plantation in Si satchanalai district, Sukhothai province in one crop yield. The various growth stages of sugarcane were studied at aboveground and belowground. In addition, carbon storage in soil was studied in upper soil horizon. The carbon storage of the sugarcane plantation was analyzed both in plant and soil. The carbon storage in plant was estimated from biomass and organic carbon percentage in each part of the plant (leaves, stems roots and ground cover). The estimation of carbon content in each part of the plant was done by oven drying at 85°C until it was at constant weight. The percentage of organic carbon in plants was estimated by Titration method. Soil carbon contents were estimated at the upper soil horizon by Walkley and Black method.The results showed that the carbon storage in the tillering stage was 4,214.09 kg/rai, the carbon contents of sugarcane trees was 357.56 kg/rai, ground surface was 40.43 kg/rai and in upper soil horizon was 3,816.10 kg/rai. In the stalk elongation stage the results showed that the carbon storage in one crop yield was 7,648.37 kg/rai, the carbon contents in sugarcane trees was 702.38 kg/rai, ground surface was 50.43 kg/rai and in upper soil horizon was 6,895.55 kg/rai. In the maturity & ripening stage, the results showed that the carbon storage in one crop yield was 8,653.46 kg/rai, the carbon contents in sugarcane trees was 1,737.92 kg/rai, ground surface was 86.30 kg/rai and in upper soil horizon was 7,193.24 kg/rai. However, it was found that the carbon storage content of a sugarcane plantation in one crop yield consists of the carbon storage in sugarcanes and the organic carbon deposit in the soil was increased when the sugarcane trees grew.Publication Open Access Quantitative analysis of HFCs, PFCs, and SF6 emission from Thailand industries(2010-04) Varittha Sriruang; Nathsuda Pumijumnong; Winai Nutmagul; Mahidol University. Faculty of Environment and Natural Resource StudiesThis study is a documented research work that determines the emission quantities of HFCs, PFCs, and SF6 in Thailand. The information included in this study is comprised of secondary data that have been collected from relevant government agency sources and the results of a field survey. The field survey provides information about the production process, the production output, and the emission factors for each specific production process, extracted from the Revised 2006 IPCC Guidelines for National GHG Inventories, Volume 3. The effect of the use of HFC-134a in the manufacturing and servicing of household refrigerators and automobile air-conditionings was calculated during 2001-2006 and the results indicated that the direct emission of HFCs based on CO2 and carbon equivalent was 59,280,394 and 16,300,616 MT Carbon, respectively. Similarly, the effect of the use of SF6 in the manufacture was calculated during 2001-2006 and the results indicated that the direct emission of SF6 based on CO2 and carbon equivalent was 29,473 and 8,038 MT Carbon, respectively. The direct emission was calculated from the amount of HFCs, PFCs, and SF6 that had leaked or had purged directly into the atmosphere. It was found that the direct emissions from manufacturing and servicing refrigerator had increased and the different emissions depend on the amount of GHG that was converted which was compared to the amount of equivalent CO2.Publication Open Access Lime and Lignite Fly Ash as cement replacement in hazardous waste solidification process: Case study of spent fluorescent lamp(2009-12) Petcharat Jekjuntuk; Chumporn Yuwaree; Gritsanaruk Theeraraj; Rungjarat Hutacharoen; Jirapun Chotiratanarak; Mahidol University. Faculty of Environment and Natural Resource StudiesThe main objective of this research is aimed at the usage of lignite fly ash (power plant) and lime as cement replacement in hazardous - waste solidification process of spent fluorescent lamp. The study found that the increasing of waste ratio in solidification process has the trend to increase density and mercury leaching concentration. Different binder ratios and waste ratios produced different strength effects on the solidified sample. Mercury leaching concentration decreased with increasing curing times, whereas the density and the strength trend to decrease after 14 days. In consideration the properties of solidified sample and cost of solidifying material, a ratio of cement to lime to fly ash of 0:30:70 was found to be the most optimum ratio for solidifying spent fluorescent lamps (at a ratio of spent fluorescent lamp to binder of 2:1), with curing time more than 7-days. Accordingly, it is reasonable to assume lime and lignite fly ash are considerably better for use as a cement replacement alternative for spent fluorescent lamp solidification.Publication Open Access The potential of the industrial sector in implementing ISO 14001: 2004 in Vientiane, Lao P.D.R.(2009-12) Somlith Lithsana; Sayam Aroonsrimorakot; Kraichat Tantrakarnapa; Mahidol University. Faculty of Environment and Natural Resource Studies; Mahidol University. Faculty of Public HealthThis research aims to study the potential of the industrial sector and factors affecting the implementation of ISO 14001:2004. The total number of representative samples which were selected through simple random sampling from 329 locations in the capital Vientiane. Most samples included senior executives, general managers or division heads. The data were drawn from the questionnaire survey, of which 320 or 97.27 percent were completed and returned. According to the study 9 indicators which are used to determine the factory’s potential level. There are 5 indicators at the medium level that executive’s demands for the ISO 14001:2004 system; technology for pollution control; budget allocation for environmental management; environmental problems prevention; and maintenance of machinery. Understanding ISO 14001:2004 ; potential of employees; environmental planning; and trainings for staff on ISO 14001:2004 are at a low level. It was found that the factors affecting the ISO 14001:2004 implementation were education level, other certificates and factory fuel utilization, which are related to factory potential level at the statistically significant 0.05. Key words: factory potential / ISO 14001:2004 / Vientiane Lao P.D.R.Publication Open Access The analysis of ecotourism as dynamics in common property management: A case study of Plai Phong Pang Thai-Style House Conservation Club, Tambon Plai Phong Pang, Amphoe Amphawa, Samutsongkhram Province(2010-04) Usa Uamson; Kulvadee Kansuntisukmongkol; Mahidol University. Faculty of Environment and Natural Resource StudiesThis study aims to analyze the patterns of management of common property and tourism by Plai Phong Pang’s Thai-style house conservation club. The analysis applies the conceptual framework of dynamic common property management (Oakerson, 1992) and the eco-tourism principle (Gail Nash, 1997, referred in Yos Santasombatr and others, 2004) to explain change and tourism resource management patterns as a community based common property. This research applies qualitative research methods by conducting a descriptive analysis according to Oakerson (1992). The factors under study are resource patterns, utilization rules of each resource, internal and external factors affecting the decision-making structure, relationship patterns among community members, and the results of common property management. Finally, the researcher expects to see a changing pattern and adaptation in common property management in the Plai Phong Pang community. The researcher collected data through the methods of non-participant observation, in-depth interviews, and focus group discussions. This study found that there are three changing phases of tourism resource management as a community common property; during the 1st phase (1999 - 2002) tourism activity had been introduced to the community but was not highly prevalent at that moment. During the 2nd Phase (2002 -2006) tourism in the area was very high. There were a higher number of tourists and those who utilized common properties during this period. And for the final phase, the 3rd phase (2006 until now), more investors in resort building came to Plai Phong Pang and the nearby sub-districts in Amphawa. The analysis according to the four factors of Oakerson (1992) found that (1) tourism resources were open for free utilization and the rate of utilization seems to be higher. (2) the rule of common property utilization in the district is not clearly functioning through negotiation and the community information process. Additionally, the rule of the marine transportation department is also functioning to control the environmental impacts from motor boats. (3) Sub-district members are living together in agricultural society. All of them are living as kin. However the individual living style is starting to gain more influence in the area. (4) When the results of tourism resource management as a common property in Plain Phong Pang sub-district was compared with the principle of eco-tourism according to Gail Nash (1997), it was found that recently the tourism management of the local conservation club has shifted away from eco-tourism concept due to a lack of awareness and avoidance of the following factors: environmental impacts, saving funds for preservation, distribution of benefits among community members and the nearby communities, and a proper management according to the natural surroundings based on sustainable resource management.Publication Open Access Geographic information system for risk area assessment on natural gas pipeline construction in Nakhon Nayok Province(2010-04) Ponson Chernkwansri; Sura Pattanakiat; Charlie Navanugraha; Mahidol University. Faculty of Environment and Natural Resource StudiesThe objective of this study is to identify potential risk areas caused by the pipeline construction project in Nakhon Nayok province. The potential surface analysis was employed for the manipulation process using critical factors including soil drainage, clay minerals, soil texture, slope, relative humidity, air quality index, distances from bodies of water, roads, and the pipeline. The evaluation of weighting and rating scores has been proposed by experts using 2 main methods, including scaling and hierarchical methods. The risk areas have been divided into high, moderate and low levels. The outputs of these two methods are compared. It was found that the risk areas identified by the scaling method consist of high risk areas of 316.69 square kilometers (14.77%), moderate risk area of 1,523.05 square kilometers (71.04%), and low risk areas of 304.12 square kilometers (14.19%). Meanwhile, the risk areas evaluated by the hierarchical method consist of high risk areas of 219.47 square kilometers (10.24%), moderate risk areas of 1,839.05 square kilometers (85.78%), and low risk areas of 85.34 square kilometers (3.9%). The comparison of those two methods using the Kappa index has shown the value of 0.66. Thus, those two methods were only in the relation of 66 %. The assessment on land utilization within the high risk areas was analyzed based on the output of the scaling method with larger high risk areas. The land use patterns found in the high risk area include the following areas agriculture of 200.50 square kilometers (63.31%), urban of 74.71square kilometers (23.59%), forest of 5.35 square kilometers (1.69%), water bodies 20.71 square kilometers (6.54%), and others 15.42 square kilometers (4.87%). The purpose of this study was to apply the Geographic Information System for to identify potential risk areas. Geographic Information System (GIS) are a set of computer tools for collecting, storing, transforming and displaying spatial data from the real world.Publication Open Access Sound absorption capacity of Oil Palm Frond Fiberboard with different finishing(2010-04) Tanasri Sihabut; Nikhom Laemsak; Mahidol University. Faculty of Environment and Natural Resource StudiesThis research studied primarily the sound absorption of oil palm frond fiberboard with different finishing, i.e. rough, screen and perforated surfaces. All boards confirmed that the higher the frequencies, the better the sound absorption coefficients. Although the density of the samples with rough surface was the lowest, their sound absorption capacity was the highest at every measured octave band frequencies. Perforated samples showed the better sound absorption coefficients than the ones with screen surface. When comparing their sound absorption coefficients with those of the sound absorbing materials in commercial use, oil palm frond fiberboards generally showed a better sound absorption capacity.Publication Open Access Climatic Factors Influencing Dengue Hemorrhagic Fever in Kolaka District, Indonesia(2018) Ramadhan Tosepu; Kraichat Tantrakarnapa; Suwalee Worakhunpiset; Kanchana NakhapakornDengue hemorrhagic fever in Indonesia is one of the serious health problems and requires understanding the occurrence of this disease. Climate Factors have a role that needs attention in the prevention of DHF disease. Understanding of disease patterns will benefit the health surveillance system and provide a way to tackle this problem. The records of dengue fever cases and climate data for the years 2010-2015 were obtained from the Health Office Kolaka District, southeast Sulawesi province and Meteorology, Climatology and Geophysics Agency in Southeast Sulawesi province, respectively. Data for the period 2010 to 2014 were used for model development through multiple linear regressions. The prediction model was used to forecast dengue cases in 2015 and the predicted results were compared with reported dengue cases in Kolaka in the past and forecasting period. Rainfall, humidity, temperature average, minimum temperature, and maximum temperature are significantly correlated with monthly cases of dengue fever. Predicted results showed a good performance where the model was able to predict 3 out of 5 epidemic outbreak events that occurred in January-March 2015 and November-December 2015. The sensitivity of detecting the outbreaks was estimated to be 60%, the specificity was 100%, positive and negative predictive value were estimated to be 100% and 77.8%, respectively. Climate has a major influence on the occurrence of dengue hemorrhagic fever infection in Kolaka district. Although the predictive model has some limitations in predicting the number of cases of monthly dengue fever, it can estimate the possibility of an outbreak three months in advance with a fairly high accuracy. The predictive model can be used to explain the incident rate of DHF of approximately 71%.Publication Open Access Simultaneous Detection of Feces-specific Bacteriophages of Bacteroides fragilis with a Duplex PCR Assay(2017) Natcha Chyerochana; Benjarath Pupacdi Javed; Pornjira Somnark; Skorn Mongkolsuk; Kwanrawee SirikanchanaBacteriophages of the Bacteroides fragilis strains HSP40 and RYC2056 are used as indicators of human-specific and general (non-host specific) fecal pollution in water bodies. However, conventional anaerobic cultivation methods require 1-2 days of incubation. To overcome this limitation, in this study, we developed a DNA-based method to simultaneously detect representative bacteriophages (B40-8 and B56-3) that infect B. fragilis strains HSP40 and RYC2056, respectively. Both phages yielded a 224-bp amplicon with the primer pair BT5414/BT5415, and an additional 152-bp PCR product was observed for B40-8 with the primer pair BT5579/BT5580. The detection limits for B40-8 and B56-3 were 10-5 and 10-4 ng of pure DNA, and 1 and 50 ng of DNA template when 5 and 5,000 PFU/mL were spiked into distilled water, respectively. The assay exhibited a higher sensitivity for sewage samples, with < 0.1 and 15 PFU/mL of phages infecting HSP40 and RYC2056, respectively. The assay did not produce false positive results for the Bacteroides phages PG76, HB13, and GA17 or for the enterococcal phages AIM06 and SR14. The assay also detected RYC2056 phages that were isolated from sewage samples and the phage B40-8 when it was spiked into raw sewage. Thus, the newly developed PCR assay demonstrated potential for the environmental monitoring of Bacteroides bacteriophages, decreasing the analysis time to a few hours.Publication Open Access Fast and Efficient Removal of Hexavalent Chromium from Water by Iron Oxide Particles(2018) Duangta Kitkaew; Athit Phetrak; Sumate Ampawong; Rachaneekorn Mingkhwan; Doungkamon Phihusut; Kamolnetr Okanurak; Chongrak PolprasertIron oxide particles (IOPs) were synthesized by chemical co-precipitation technique and further used as an adsorbent in removing hexavalent chromium (Cr(VI)) from aqueous solutions during batch adsorption. The IOP adsorbent had specific surface area of 65 m2/g, total pore volume of 0.25 cm3/g and mostly contained a mesoporous structure. The analysis of scanning and transmission electron microscopy indicated that the adsorbent contained a substantial amount of iron oxide of about 66%, which was well distributed throughout the adsorbent. The IOP adsorbent showed a rapid and efficient Cr(VI) removal that followed Langmuir adsorption isotherm model with maximum adsorption capacity of 2.39 mg-Cr(VI)/g-IOP, demonstrating a monolayer formation on the adsorptive sites of IOP. The kinetic adsorption of Cr(VI) on the IOP followed the pseudo-second-order model, suggesting chemisorption. Thus, the IOP adsorbent provides a potentially effective technology in eliminating of Cr(VI) from water since it can remove appreciable amounts of Cr(VI) with a relatively short contact time of 30 min.