Journal of Environmental Science and Natural Resources最新文献_第8页

Effect of Shrimp Processing Waste Feed on the Growth Performance of Prawn (Macrobrachium rosenbergii) in Aquarium and Pond Condition 对虾加工废料对罗氏沼虾(Macrobrachium rosenbergii)在水族和池塘条件下生长性能的影响

Journal of Environmental Science and Natural Resources Pub Date : 2019-09-30 DOI: 10.3329/jesnr.v11i1-2.43365

F. Shikha, M. Hossain, A. Sharma

{"title":"Effect of Shrimp Processing Waste Feed on the Growth Performance of Prawn (Macrobrachium rosenbergii) in Aquarium and Pond Condition","authors":"F. Shikha, M. Hossain, A. Sharma","doi":"10.3329/jesnr.v11i1-2.43365","DOIUrl":"https://doi.org/10.3329/jesnr.v11i1-2.43365","url":null,"abstract":"The study was conducted to assess the effect of formulated feed on the growth performance of prawn both in aquarium and pond system during 25 September to 25 December 2013. The feeds/diets were, diet 1 (formulated feed), diet 2 (commercial feed), diet 3 (custard cake) and diet 4 (shuji-ata ball). Protein percent of the feeds were 34.51% in Diet-1, 32.67% in Diet-2, 25.41% in Diet-3 and 21.43% in Diet 4. Four experimental diets were assigned to four treatments viz. T1, T2, T3 and T4 both in aquarium and pond. The water quality parameters were monitored 15 days interval and the ranges were: temperature 26°C to 29.8°C (aquarium system) and 24.5°C to 29.9°C (pond system) ; pH 7.07 to 8.09 (aquarium system) and 7.87 to 8.45 (pond system); DO 7.07 to 8.09 (aquarium system) and 5.08 to 5.86 mg/L (pond system). The result of the present study showed that Prawn feed Diet 1 and Diet 2 resulted highest weight gain 2.42 and 2.39 g (aquarium system) and 3.63 and 3.5g (pond system), respectively. Based on the result of present study, it could be suggested that shrimp waste can be replaced in the diets of prawn (Macrobrachium rosenbergii) along with other ingredients. \u0000J. Environ. Sci. & Natural Resources, 11(1-2): 59-71 2018","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87837542","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

Change of Vegetation Cover at Rohingya Refugee Occupied Areas in Cox’s Bazar District of Bangladesh: Evidence from Remotely Sensed Data 孟加拉国考克斯巴扎尔地区罗兴亚难民占领地区植被覆盖的变化:来自遥感数据的证据

Journal of Environmental Science and Natural Resources Pub Date : 2019-09-30 DOI: 10.3329/jesnr.v11i1-2.43360

Muhammed Fazlur Rahman, Islam, T. Chowdhury

{"title":"Change of Vegetation Cover at Rohingya Refugee Occupied Areas in Cox’s Bazar District of Bangladesh: Evidence from Remotely Sensed Data","authors":"Muhammed Fazlur Rahman, Islam, T. Chowdhury","doi":"10.3329/jesnr.v11i1-2.43360","DOIUrl":"https://doi.org/10.3329/jesnr.v11i1-2.43360","url":null,"abstract":"Nearly one million Rohingya Refugees are living in Cox’s Bazar—a south-eastern district of Bangladesh; among them, more than half a million have fled Myanmar since August 2017. There are always some impacts of refugee settlements on the host environment. Hence, this study has made an initiative to investigate the changes of vegetation covers in four refugee occupied Unions of Teknaf and Ukhia Upazila. Analysing the remotely sensed Landsat imageries using Normalized Difference Vegetation Index method, the spatial extent of sparse vegetation, moderate vegetation, and dense vegetation before and after the occurrence of 2017 Influx have been quantified. The result reveals that nearly 21,000 acres of dense vegetation and more than 1700 acres of moderate vegetation have been reduced within the period of one year in-between 2017 and 2018. On the other hand, during the same period, the refugee sites have been expanded by almost 6000 acres. The main reasons for this drastic reduction of vegetation include the construction of refugee camps by felling the forest and consumption of firewood by refugees from the surrounding forest of their camps. Arrangement of alternative cooking fuel, relocation of refugees, reforestation, and accelerating the repatriation process may reduce the further degradation of vegetation. \u0000J. Environ. Sci. & Natural Resources, 11(1-2): 9-16 2018","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"635 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77027396","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: 12

Scarcity of Safe Drinking Water in the South-West Coastal Bangladesh 孟加拉国西南沿海安全饮用水短缺

Journal of Environmental Science and Natural Resources Pub Date : 2019-09-30 DOI: 10.3329/jesnr.v11i1-2.43361

Ma Rahman, M. Islam

{"title":"Scarcity of Safe Drinking Water in the South-West Coastal Bangladesh","authors":"Ma Rahman, M. Islam","doi":"10.3329/jesnr.v11i1-2.43361","DOIUrl":"https://doi.org/10.3329/jesnr.v11i1-2.43361","url":null,"abstract":"This study incorporates a detail exploration of drinking water scarcity in the south-western coastal area of Bangladesh. The objectives were to recognize the constraints of potable water supply in the coastal area and to identify the water-scarce area of a coastal community of Bangladesh. Both primary and secondary data have been used to carry out the study. A total of 349 households were selected by using appropriate statistical procedure. ArcGIS has been used for pertinent mapping and calculating the served and unserved (inadequate supply) area of the nearest community water source e.g. pond sand filters or tube-wells. This study found that the root causes i.e. saline water intrusion, reduction of upstream flow, sea level rise, disasters, polder, arsenic contamination, shrimp cultivation in brackish water, excessive use of underground water and lack of appropriate aquifer were highly influential for the disturbance of potable water supply in the coastal area. In addition, it has been showed that about two-third of the settlement areas as well as households fell into the water scarce zone. \u0000J. Environ. Sci. & Natural Resources, 11(1-2): 17-25 2018","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84651392","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: 15

Forms and Placement of Nitrogen Fertilizers Influence Nitrogen Use Efficiency and Yield of BRRI Dhan49 under Continuous Flooded Condition 连续淹水条件下，氮肥形态和施放对BRRI Dhan49氮肥利用效率和产量的影响

Journal of Environmental Science and Natural Resources Pub Date : 2019-09-30 DOI: 10.3329/jesnr.v11i1-2.43366

Islam, M. Akhter, A. Huda, M. Hashem, M. Asad

{"title":"Forms and Placement of Nitrogen Fertilizers Influence Nitrogen Use Efficiency and Yield of BRRI Dhan49 under Continuous Flooded Condition","authors":"Islam, M. Akhter, A. Huda, M. Hashem, M. Asad","doi":"10.3329/jesnr.v11i1-2.43366","DOIUrl":"https://doi.org/10.3329/jesnr.v11i1-2.43366","url":null,"abstract":"An experiment was conducted at the Soil Science Field Laboratory of Bangladesh Agricultural University, Mymensingh during Aman season of 2016 to evaluate the effects of deep placement of N fertilizers in the form of USG and NPK briquettes in comparison with PU on nitrogen use efficiency and yield of BRRI dhan49. The soil was silt loam in texture having pH 6.27, organic matter content 1.95% and total N 0.136%. The experiment was laid out in a RCBD with eight treatments and three replications. The PU was applied in three equal splits. The USG and NPK briquettes were deep placed at 10 DAT and the briquettes were placed at 8-10 cm depth between four hills at alternate rows. The maximum grain yield of 5981 kg ha-1 was recorded in T3 which was statistically similar with T2 and T6. The highest straw yield of 6381 kg ha-1 was observed in T3. The lowest grain yield (3265 kg ha-1) and straw yield (4280 kg ha-1) was recorded in T3. The deep placement of USG and NPK briquettes enhanced both the recovery of applied N and N use efficiency in comparison with broadcast application of prilled urea. \u0000J. Environ. Sci. & Natural Resources, 11(1-2): 53-58 2018","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"192 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88123194","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

Forest Cover Change Analysis Using Remote Sensing Techniques in Madhupur Sal Forest of Bangladesh 基于遥感技术的孟加拉国Madhupur Sal森林覆盖变化分析

Journal of Environmental Science and Natural Resources Pub Date : 2018-11-29 DOI: 10.3329/jesnr.v10i2.39015

M. A. Salam, M. Pramanik

{"title":"Forest Cover Change Analysis Using Remote Sensing Techniques in Madhupur Sal Forest of Bangladesh","authors":"M. A. Salam, M. Pramanik","doi":"10.3329/jesnr.v10i2.39015","DOIUrl":"https://doi.org/10.3329/jesnr.v10i2.39015","url":null,"abstract":"Deforestation, degradation, damages, transformation and over exploitation of forests are the common problem in different parts of the world. Timely monitoring and assessment of forest resources may help to address and identify the above mentioned problems and thus proper guidance may be given the forest resources manager for rational planning and management of forests. Apart from the conventional methods of forest monitoring, remote sensing with its unique capability of synoptic viewing, real time and repetitive nature offers a potential tool for monitoring and evaluation of forest resources and hence remote sensing technology has been successfully used in various studies like forest inventory, monitoring of forest cover changes and forest damage assessment. In the present research forest cover change analysis in ‘Madhupur Sal Forest’ located in central part of Bangladesh has been investigated using satellite remote sensing data and spatial analysis. Transformation of ‘Sal forest’ to other landuse has been studied using the Landsat MSS (Multi Spectral Scanner) data of 1973 and Landsat 8 OLI (Operational Land Imager) data of 2015. Driving forces behind the transformation of ‘Sal forest’ has also been investigated through GPS (Global Positioning System) based ground verification and interview with the people living in the locality.J. Environ. Sci. & Natural Resources, 10(2): 73-78 2017","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75264799","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: 3

Impact of Land Tenure System on Socio-Economic Characteristics in Selected Areas of Mymensingh 土地权属制度对迈门辛格部分地区社会经济特征的影响

Journal of Environmental Science and Natural Resources Pub Date : 2018-11-29 DOI: 10.3329/jesnr.v10i2.39026

Z. Haque, T. Jinan

{"title":"Impact of Land Tenure System on Socio-Economic Characteristics in Selected Areas of Mymensingh","authors":"Z. Haque, T. Jinan","doi":"10.3329/jesnr.v10i2.39026","DOIUrl":"https://doi.org/10.3329/jesnr.v10i2.39026","url":null,"abstract":"The present study aims at investigating into the existing land tenure system of Dorirampur, Jhairpar and Goisa para at Traishal Upazila of Mymensingh District. Keeping in view the objectives 70 samples were randomly selected. Survey method was followed to collect required data. Sampled farmers belonged to six tenurial groups. Out of 70 respondents 34, 22, 16, 7, 10 and 11 percent of total were owner operators, part operators, part tenants, part operator-cum-part tenants, tenants and absentee landowners respectively during the study year. In the study, out of 70 respondents 67 percent were owner operator, 33 percent of them were tenant operators. The selected farmers in the study area practiced three types of share cropping system: i) fifty-fifty share cropping, ii) forty-sixty share cropping and iii) fixed amount of paddy payment. The average annual income were found to be Tk. 97096, 128267, 5215, 76340, 35871 and 113563 respectively for owner operator, part operators, part tenants, part operator-cum-part tenants, tenants and absentee landowner. Analysis of annual income reveals a positive relationship between tenure category and that of annual income during the study area.J. Environ. Sci. & Natural Resources, 10(2): 133-142 2017","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86327631","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: 3

Impacts of Beel Sanctuary Management Project on Fish Production and Socio -Economic Competence: a Study in the HaltiBeelTanki Fish Sanctuary 鳗鱼保护区管理项目对鱼类生产和社会经济能力的影响——以HaltiBeelTanki鱼类保护区为例

Journal of Environmental Science and Natural Resources Pub Date : 2018-11-29 DOI: 10.3329/jesnr.v10i2.39013

M. Latif, M. Latif

{"title":"Impacts of Beel Sanctuary Management Project on Fish Production and Socio -Economic Competence: a Study in the HaltiBeelTanki Fish Sanctuary","authors":"M. Latif, M. Latif","doi":"10.3329/jesnr.v10i2.39013","DOIUrl":"https://doi.org/10.3329/jesnr.v10i2.39013","url":null,"abstract":"The research was conducted to find out the impacts of Beel sanctuary management on fish production of the HaltiBeelTanki fish sanctuary and socio-economic competence of adjacent fishermen, Natore, Bangladesh through random sampling with questionnaire survey and secondary data. The main objectives of the research were- to find out the present status of fish production of the Beel and to know the socio-economic condition of the surrounding fishermen. A total of 68 fishermen were selected and interviewed. In the studied Beel the annual fish production was 8.8 MT in 2012 where Beel sanctuary management increased the production up to 15.2 MT in 2013. The average fish production increased 2.6 MT per year. Fish species such as Ayre, Calbaosh, Pabda, Sharputi etc. were absent before the project (before 2012) but at present available at a rate of 20g, 1000g, 300g, and 1200g per day respectively. The study revealed that about 77% of the fishermen preferred nuclear family where only 23% joint family. It was found that about 63% fishermen were illiterate and there was no H.S.C pass fisherman. The average income of the selected fishermen was 8125 taka/month and about 58% fishers were able to save money 501-1000 taka/month after the project.J. Environ. Sci. & Natural Resources, 10(2): 55-63 2017","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85870322","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

Impacts of Low Flows on Heavy Metal concentrations in Turag River Bangladesh 低流量对孟加拉图拉格河重金属浓度的影响

Journal of Environmental Science and Natural Resources Pub Date : 2018-11-29 DOI: 10.3329/jesnr.v10i2.39032

Mahfuzur Rahman, Syed Hafizur Rahman, M. Chowdhury, Z. Fardous

引用次数: 3

Antibacterial Activity of Bohera (Terminaliabellirica) Extract against Dental Carries Causing Bacteria Streptococcus mutans 茯苓提取物对口腔致病菌变形链球菌的抑菌活性研究

Journal of Environmental Science and Natural Resources Pub Date : 2018-11-29 DOI: 10.3329/JESNR.V10I2.39024

Mrb Mizan, Kamrunnahar, M. Azad

引用次数: 1

Physicochemical Analysis of Mymensingh Municipality Sewage Water and Old Brahmaputra River water 迈门辛格市污水和老布拉马普特拉河水的理化分析

Journal of Environmental Science and Natural Resources Pub Date : 2018-11-29 DOI: 10.3329/JESNR.V10I2.39019

M. Uddin, S. Talukder, Hossen, Mt Hossain

{"title":"Physicochemical Analysis of Mymensingh Municipality Sewage Water and Old Brahmaputra River water","authors":"M. Uddin, S. Talukder, Hossen, Mt Hossain","doi":"10.3329/JESNR.V10I2.39019","DOIUrl":"https://doi.org/10.3329/JESNR.V10I2.39019","url":null,"abstract":"The study was conducted to investigate the physicochemical properties of the Old Brahmaputra River and Sewage water in Mymensingh Municipality. To perform the study fifty samples were collected from five different stations from the river and surrounding sewage discharge points. The samples were analyzed to determine pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), Lead (Pb) and Cadmium (Cd). The mean value of pH was 7.1 and 6.8 for river and sewage water samples, respectively. Mean EC value was 183 μS/cm and 589.18 μS/cm for river and sewage samples, respectively signifies that EC of all samples were within the acceptable range. 66.32 ppm and 260.36 ppm were the mean TDS value for river and sewage samples, respectively indicates no harm to aquatic lives and irrigation water use. Mean DO and BOD values for river water samples were 4.21 mg/L and 6.02 mg/L, respectively. 3.08 mg/L and 9.98 mg/L were the mean DO and BOD values for sewage water samples, respectively implies that river water is usable for irrigation but sewage water is unfit for it. Mean Pb concentration for river and sewage water samples was 0.428 ppm and 0.467 ppm, respectively.J. Environ. Sci. & Natural Resources, 10(2): 105-108 2017","PeriodicalId":15768,"journal":{"name":"Journal of Environmental Science and Natural Resources","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80350090","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