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The Result of Electrical Resistivity Investigation of Solid Waste Landfill Conducted at Nsukka Municipality Using Electrical Resistivity Measurments 利用电阻率测量对恩苏卡市固体废物填埋场进行电电阻率调查的结果
Pub Date : 2024-07-22 DOI: 10.9734/ajgr/2024/v7i3240
Nzemeka Christopher Olisah, N. Obiekezie
Solid waste landfill management has been a significant issue for Nigerian urban areas and other developing countries across the globe.Similar to most other cities, Nsukka also generates waste on a daily basis, much of which is dumped in poorly designed and positioned dumping sites. The majority of the disposal sites are found on roadsides, at marketplaces, on farms, and in residential neighborhoods, among other places. The road infrastructure and groundwater are under danger, and the beauty of the impacted communities are not spared. Undoubtedly, the unchecked citation of boreholes as the source of potable water in the majority of our rural and urban communities—given that the government doesn't seem to be providing water to the people—has become a significant challenge. An investigation using electrical resistivity method was conducted around a solid waste dumpsite at Nsukka in Nsukka L.G.A of Enugu State, Nigeria with an aim to investigate the level of groundwater contamination and the objectives to determine the subsurface geoelectric layers, depth to water table, lithology delineation and map out the contamination zones. The scope of this study provides an overview of some of the approaches used to assess the aquifer vulnerability and aquifer potential using Vertical Electrical Sounding (Schlumberger array) and 2D resistivity imaging (Wenner array) in different locations around Nsukka municipality dumpsite. Both methods were used for this study in order to provide a geophysical database for exploration of the study area’s groundwater resources and also they are less expensive and less time consuming. VES has proved to be effective in solving groundwater problems in most places in Nigeria (Ezeh and Ugwu, 2010; Ugwu and Ezeh, 2012; Nzemeka et al. [1,2]. Electrical Sounding (VES) and 2D resistivity imaging were carried out with a digital read out resistivity meter (ABEM SAS 1000) to acquire data in the area and were interpreted using the Schlumberger automatic INTERPEX analysis software and the RES2DINV software respectively, which generates model curves using initial layer parameters and display the variations of electrical resistivities respectively. A total of eight (8) sounding and six (6) 2D resistivity imagings were carried out in the area. A contaminant leachate plume was delineated in 2D resistivity sections as low resistivity zones while the VES shows the depth of aquifer. In 2D pseudosections where bluish colours with low resistivities (less than 20.80(Omega)m) with the depth ranging from 1.28m to 17.1m in the Line 1 and 2 are seen as contaminated zones. The rest of the lines are not contaminated because of their high resistivities (greater than 20.80(Omega)m). The result of the electrical resistivity survey also showed 4 - 5 layers geo-electric sections and an AA and AK type sounding curves. The VES result shows that VES 1A, 1B, 2A and 2B which are carried out on line 1 & 2 of the wenner lines showed signs of contamination with low re
固体废物填埋管理一直是尼日利亚城市地区和全球其他发展中国家面临的一个重要问题。与大多数其他城市一样,恩苏卡每天也会产生垃圾,其中大部分被倾倒在设计和位置不佳的垃圾倾倒场。大部分垃圾倾倒场位于路边、集市、农场和居民区等地。道路基础设施和地下水岌岌可危,受影响社区的美景也未能幸免。毋庸置疑,在我国大多数农村和城市社区,由于政府似乎并没有为人们提供饮用水,肆意引用井眼作为饮用水源已成为一项重大挑战。本研究采用电阻率法对尼日利亚埃努古州 Nsukka L.G.A 的 Nsukka 固体废弃物倾倒场周围进行了调查,目的是调查地下水污染程度,并确定地下地电层、地下水位深度、岩性划分和污染区地图。本研究概述了在恩苏卡市垃圾场周围不同地点使用垂直电探测(斯伦贝谢阵列)和二维电阻率成像(温纳阵列)评估含水层脆弱性和含水层潜力的一些方法。本研究采用这两种方法是为了提供一个地球物理数据库,用于勘探研究区域的地下水资源,而且这两种方法成本较低,耗时较短。事实证明,在尼日利亚大多数地方,VES 都能有效解决地下水问题(Ezeh 和 Ugwu,2010 年;Ugwu 和 Ezeh,2012 年;Nzemeka 等人,[1,2])。使用数字读出电阻率仪(ABEM SAS 1000)对该地区进行了电测深(VES)和二维电阻率成像,以获取数据,并分别使用斯伦贝谢自动 INTERPEX 分析软件和 RES2DINV 软件进行解释,该软件使用初始层参数生成模型曲线,并分别显示电阻率的变化。在该区域共进行了八(8)次探测和六(6)次二维电阻率成像。在二维电阻率剖面图中,污染物沥滤液羽流被划分为低电阻率区,而 VES 则显示了含水层的深度。在二维伪断面图中,1 号线和 2 号线呈蓝色,电阻率低(小于 20.80 (Omega)m),深度在 1.28 米至 17.1 米之间,被视为污染区。其余线路由于电阻率较高(大于 20.80 (Omega)m)而没有受到污染。电阻率勘测结果还显示了 4-5 层地电剖面以及 AA 和 AK 型探测曲线。电阻率勘测结果显示,在温纳线1号线和2号线上进行的电阻率勘测1A、1B、2A和2B显示出污染迹象,电阻率值低于20.80(Ω)米,与温纳线勘测结果相辅相成。污染尚未到达线路上含水层的位置。含水层的深度从 30.26 米到 155.43 米不等,而最大污染深度为 17.1 米。我们认为,沥滤液尚未渗入含水层,因为此类含水层被认为是自由的。因此,建议研究区周围的钻孔深度不应小于 30 米,以避免开采受污染的水。
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引用次数: 0
Sensitivity Analysis of the Physiographic Parameters of the Teesta River Basin by Hydrological Modelling 通过水文模型对蒂斯塔河流域地貌参数的敏感性分析
Pub Date : 2024-07-19 DOI: 10.9734/ajgr/2024/v7i3238
Noshin Anjum, Md. Motaleb Hossain
Estimating the discharge from a rainfall event is a challenging task because of a number of affecting elements. A multitude of physiographic factors are essential for both channel and surface flow. In a developing nation like Bangladesh, discharge measurement is critical for forecasting floods, managing land, measuring sediment, nutrients and promoting sustainable development. It is possible to measure the discharge and physiographic parameter using a hydrological model. Using a semi-distributed model Soil and water Assessment Tool (SWAT), the discharge of the Teesta River Basin, one of the most significant basins of Bangladesh, is simulated for the years 2003 to 2020. Sequential Uncertainty Fitting version2 (SUFI-2) technique within SWAT-CUP (SWAT Calibration Uncertainty Program) is used to accomplish model calibration and validation for daily time periods utilizing physiographic parameters. The simulation period of this study spans from 2003 to 2020, and the meteorological data utilized includes temperature, wind speed, relative humidity and rainfall. With  and , our calibration results for the time period 2003–2011 demonstrated a strong correlation between observed and simulated discharge. Reasonable values are obtained for the  and , which are 0.65 and 0.70 for the validation period 2012-2020. Sensitivity analysis is an integral part of model development and involves analytical examination of input parameters to aid in model validation and provide guidance for future research and sustainable development. Sensitivities of physiographic parameters have been analyzed using SUFI-2 algorithm in SWAT-CUP. It is done by global and one-at-a-time sensitivity procedures. For the Teesta river basin parameters coefficient curve number CN2.mgt, saturated hydraulic conductivity of the soil lair SOL_K ().sol and soil bulk density SOL_BD ().sol show most sensitivity for both of global and one-at-a-time sensitivity procedures. The findings contribute to predict the discharge in period of no observe data as well as to enhance the understanding and informing decision-making processes for sustainable water resource management.
由于受到多种因素的影响,估算降雨事件的排水量是一项极具挑战性的任务。多种地貌因素对河道和地表水流都至关重要。在孟加拉国这样的发展中国家,测量排水量对于预报洪水、管理土地、测量泥沙和营养物质以及促进可持续发展至关重要。使用水文模型可以测量排水量和地貌参数。利用半分布式模型 "土壤和水评估工具(SWAT)",对孟加拉国最重要的流域之一 Teesta 河流域 2003 年至 2020 年的排水量进行了模拟。利用 SWAT-CUP(SWAT 校准不确定性程序)中的 Sequential Uncertainty Fitting version2(SUFI-2)技术,利用地貌参数完成了每日时段的模型校准和验证。本研究的模拟期为 2003 年至 2020 年,使用的气象数据包括温度、风速、相对湿度和降雨量。在 2003-2011 年期间,利用 和 ,我们的校准结果表明,观测到的排水量与模拟排水量之间具有很强的相关性。在 2012-2020 年的验证期,± 和± 的合理值分别为 0.65 和 0.70。灵敏度分析是模型开发不可或缺的一部分,包括对输入参数进行分析检查,以帮助模型验证,并为未来研究和可持续发展提供指导。使用 SWAT-CUP 中的 SUFI-2 算法分析了地貌参数的敏感性。分析方法包括全局敏感性分析和一次性敏感性分析。对于泰斯特河流域的参数系数曲线数 CN2.mgt、土壤饱和导水性 SOL_K ().sol 和土壤容重 SOL_BD ().sol 在全局和一次性敏感性程序中都显示出最大的敏感性。这些发现有助于预测无观测数据时期的排水量,也有助于加深对水资源可持续管理决策过程的理解并为其提供信息。
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引用次数: 0
Climatic Variations and Challenges to Socio-economic Development amongst Mbororo Communities in Mbum Plateau, North West Region of Cameroon 喀麦隆西北部姆布姆高原姆博罗罗社区的气候变异与社会经济发展挑战
Pub Date : 2024-05-23 DOI: 10.9734/ajgr/2024/v7i2231
Ngwani Awudu, Funwi Godlove Ngwa, Suiven John Paul, Yinkfu Randy, Ngeh Roland Nformi
This study sets out to investigate the challenges hindering Mbororo sources of livelihood in Mbum Plateau, North West Region of Cameroon. Explanatory research was used where it specify the nature and direction of the relationships between the studied variables. The study used mixed methods of qualitative and quantitative approaches. The study employed the primary and secondary data sources to bring out realistic results. Rainfall Seasonality Index (SI) and Standardized Precipitation Index (SPI) were employed to assess the vulnerability of the agro-hydrological system to climate variation. The major primary data sources used were field survey, interviews and questionnaires. A total of 200 questionnaires were distributed using stratified random and snow ball sampling techniques. The data obtained was complemented by secondary sources from published and unpublished materials. Data collected during the field survey were analyzed through two statistical techniques. The qualitative data obtained was analyzed through the content analysis whereas themes and codes were given to the different opinions and perceptions of the informants and their frequencies and percentages were being determined from there. Data were presented in tables, charts, maps, and graphs with some attempted interpretations. Data were analyzed using the chi-square and multiple regression models. The findings revealed that climate variability, dwindling pasture and low streams discharge are having negative effects on Mbororo communities. It was observed from satellite images that, land use over the years has been changing with reducing aerial extent and quality of pasture, reducing water points in Mbum Plateau. In order to adapt the decreasing cattle numbers on the side of the Mborroro, they have taken farming, diving, hawking arm rubbery, and schooling as new livelihoods sustenance. The study recommends a sustainable pastoral activity by encouraging the introduction of drought resistant cattle species, Bracharia and Guatemala grass to supplement the natural pasture. MINEPAI should regularly control herd size so as to ensure ecosystem balance and avoid overgrazing. Transhumance tracts and areas should be well demarcated to avoid frequent farmer-grazers’ conflicts and frequent cattle theft observed in the region.
本研究旨在调查喀麦隆西北部姆布姆高原姆博罗罗生计来源所面临的挑战。研究采用了解释性研究方法,明确了研究变量之间关系的性质和方向。研究采用了定性和定量的混合方法。研究采用了第一手和第二手数据来源,以得出符合实际的结果。降雨季节性指数(SI)和标准化降水指数(SPI)被用来评估农业-水文系统对气候变异的脆弱性。使用的主要原始数据来源是实地调查、访谈和问卷调查。采用分层随机抽样和雪球抽样技术共发放了 200 份调查问卷。从已出版和未出版材料中获得的二手资料对所获得的数据进行了补充。实地调查期间收集的数据通过两种统计技术进行了分析。定性数据通过内容分析进行分析,对信息提供者的不同意见和看法赋予主题和代码,并由此确定其频率和百分比。数据以表格、图表、地图和图形的形式呈现,并尝试进行一些解释。数据分析采用了卡方和多元回归模型。研究结果表明,气候多变、牧场减少和溪流排水量低正在对姆博罗罗社区产生负面影响。卫星图像显示,多年来,土地使用一直在发生变化,牧场的空中范围和质量都在下降,姆布姆高原的供水点也在减少。为了适应姆博罗罗人牛群数量减少的情况,他们开始从事耕作、潜水、贩卖橡胶臂和上学等新的谋生手段。研究建议,通过鼓励引进抗旱牛种、布拉查里亚和危地马拉草来补充天然牧场,从而实现可持续的放牧活动。农业部应定期控制牛群规模,以确保生态系统平衡,避免过度放牧。应妥善划定放牧区,以避免农民与放牧者之间经常发生冲突以及该地区经常出现偷牛事件。
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引用次数: 0
Urban Growth Dynamics of National Capital Region of India Using Geospatial Technology 利用地理空间技术研究印度国家首都地区的城市增长动态
Pub Date : 2024-05-19 DOI: 10.9734/ajgr/2024/v7i2230
Nikhil Tiwari, Parag Jyoti Kashyap
The urban growth refers to the movement of people from rural areas to urban areas, where there is a higher level of human population, economic activity, infrastructure, and significant expansion of land use. Urban growth is closely related to urbanization. In the National Capital Region (NCR), unplanned growth is one of the main problems. These obstacles limit the prospects for economic expansion. So, the study area of this research is the NCR of India. The study is based on the growth of urban areas from 1901 to 2011. The data is taken from the Census of India, Registrar General, and Census Commissioner, New Delhi. It has counted the total towns and population in Delhi, NCR, since 1901 and 2011. The District Census Handbook has been used for the collection of urban population and total population data for that district. Google Earth Pro has been used for the kml format of towns. ArcGIS 10.7 software has been used for mapping purposes. The number of towns has increased from 1901 to 2011. There have been found 182 towns in 2011. The towns also show positive and negative growth from 1901 to 2011. The maximum growth of towns was found after the liberalization period. The maximum growth of towns has been found in the Uttar Pradesh sub region. And most of the towns have transformed into urban regions.
城市增长指的是人口从农村地区向城市地区的迁移,在城市地区,人口、经济活动、基础设施和土地利用都有了更高的水平。城市增长与城市化密切相关。在国家首都地区(NCR),无计划的增长是主要问题之一。这些障碍限制了经济扩张的前景。因此,本研究的研究区域是印度的国家首都区。研究基于 1901 年至 2011 年城市地区的增长情况。数据来自印度人口普查、注册总署和新德里人口普查专员。它统计了新德里地区自 1901 年至 2011 年的城镇和人口总数。地区人口普查手册用于收集该地区的城市人口和总人口数据。城镇的 kml 格式使用了 Google Earth Pro。ArcGIS 10.7 软件用于制图。从 1901 年到 2011 年,城镇数量有所增加。2011 年有 182 个城镇。从 1901 年到 2011 年,城镇数量也出现了正增长和负增长。城镇的最大增长出现在自由化时期之后。北方邦分区的城镇增长最多。大多数城镇已转变为城市地区。
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引用次数: 0
GIS-Based Analytical Hierarchy Process Modelling and Mapping of Erosion Vulnerability in the Coastal Areas of Rivers State, Nigeria 基于地理信息系统的层次分析法建模和尼日利亚河流州沿海地区侵蚀脆弱性绘图
Pub Date : 2024-04-24 DOI: 10.9734/ajgr/2024/v7i2228
.. Igbokwe, J.I, .. Obasohan, J.N, .. Igbokwe, E.C
The problem of coastal erosion in rivers State Nigeria is a significant issue that has far-reaching consequences for the environment and local communities. Despite the efforts of previous research there remains a lack of comprehensive understanding of the factors contributing to erosion vulnerability and their relative importance, hindering effective decision-making and management practices aimed at mitigating the effects of coastal erosion in Rivers State. Therefore, this study aimed at a GIS-based analytical hierarchy process modeling and mapping of coastal erosion vulnerability in Rivers State, Nigeria. The objectives are to establish and classify the geophysical factors according to the levels of coastal erosion risk, calculate the reliability index of the classified geophysical factors, determine the coastal vulnerable areas across Rivers State using analytical hierarchical process and to produce a coastal vulnerability index map defining the extent of erosion vulnerability in Rivers State. The methodology comprises of the acquisition of primary and secondary data, image pre-processing, image classification, DEM processing, classification and standardization of factors, development of pairwise comparism, and weighted linear combination analysis. The study revealed three distinct coastal erosion vulnerability zones: high, moderate, and low vulnerability. The high vulnerability zone encompassed a total expanse of 545.29 square kilometers, constituting 6.38% of the study area. In contrast, the moderate and low vulnerability zones covered 1941.33 square kilometers and 6052.51 square kilometers, respectively, making up 22.73% and 70.89% of the total area. Bonny (139.28 sq km) was ranked as the most vulnerable due to its role as an oil and gas hub. Degema (111.28 sq km) ranked second and requires urgent erosion control. Okrika and Andoni (71.73 sq km and 62.20 sq km) were third and fourth respectively. It is recommended that an advocate for the systematic approach to coastal vulnerability zoning be introduced in the study. The categorization of areas into high, moderate, and low vulnerability zones provides a standardized framework for assessing coastal regions' susceptibility to erosion. This approach can be applied to other regions to facilitate consistent vulnerability assessments.
尼日利亚河流州的海岸侵蚀问题是一个对环境和当地社区具有深远影响的重大问题。尽管以前的研究做出了努力,但对造成侵蚀脆弱性的因素及其相对重要性仍然缺乏全面的了解,这阻碍了旨在减轻河流州海岸侵蚀影响的有效决策和管理实践。因此,本研究旨在对尼日利亚里弗斯州的海岸侵蚀脆弱性进行基于地理信息系统的分层分析法建模和绘图。研究的目标是根据海岸侵蚀风险的程度对地球物理因素进行确定和分类,计算分类后的地球物理因素的可靠性指数,利用分析层次过程确定整个河流州的海岸易受侵蚀地区,并绘制海岸易受侵蚀指数图,确定河流州海岸易受侵蚀的程度。研究方法包括获取第一手和第二手数据、图像预处理、图像分类、DEM 处理、因子分类和标准化、配对比较和加权线性组合分析。研究发现了三个不同的海岸侵蚀脆弱区:高脆弱区、中脆弱区和低脆弱区。高脆弱区总面积为 545.29 平方公里,占研究区域的 6.38%。而中度和低度易受侵蚀区的面积分别为 1941.33 平方公里和 6052.51 平方公里,分别占总面积的 22.73% 和 70.89%。邦尼(139.28 平方公里)因其石油和天然气中心的作用而被列为最脆弱地区。德格马(111.28 平方公里)排名第二,急需控制侵蚀。Okrika 和 Andoni(分别为 71.73 平方公里和 62.20 平方公里)分列第三和第四位。建议在研究中引入沿海脆弱性分区的系统方法。将地区划分为高、中、低脆弱性区为评估沿海地区易受侵蚀程度提供了一个标准框架。这种方法可用于其他地区,以促进脆弱性评估的一致性。
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引用次数: 0
Drivers of Carbon Emissions in Kenya: The Perspective of Technology 肯尼亚碳排放的驱动因素:技术视角
Pub Date : 2024-04-06 DOI: 10.9734/ajgr/2024/v7i2226
naftaly mose, Michael Fumey, Edwin Kipchirchir
The empirical studies have portrayed from a different perspective that technology, foreign direct investment (FDI), and economic growth have diverse outcomes on carbon dioxide (CO2) emissions. African economies specifically Kenya are currently threatened with more CO2 emissions for which proper strategies need to be adopted to reduce and mitigate this situation. To address this issue, the Autoregressive Distributed Lag (ARDL) technique was utilized, differentiating between the long-term and short-term effects of drivers of CO2. Granger causality was applied to analyze the causality between the series. The study uses time series data for Kenya from 1990 to 2022. The short-run and long-run results indicate a negative relationship between technology and carbon emissions. Specifically, an increase in technology reduces carbon emissions while an increase in economic growth and FDI inflow increases carbon emissions. The study has identified the negative nexus between technology and carbon emissions in Kenya. This means that technological innovation can increase labour productivity and utilization of resources, thereby reducing carbon emissions. Therefore, Kenya should increase research and utilization of low and efficient carbon technologies to decouple economic growth from environmental pollution. Based on the result, various strategies have been proposed, including using different clean technologies to produce renewable fuels. FDI that complies with environmental regulations, and the use of advanced green and clean technologies can help mitigate the negative impact of technological progress on the environment. Additionally, technological progress, particularly in information and communication technology, will reduce greenhouse gas emissions and improve environmental quality.
实证研究从不同角度描绘了技术、外国直接投资(FDI)和经济增长对二氧化碳(CO2)排放的不同影响。非洲经济体,特别是肯尼亚,目前正面临着二氧化碳排放量增加的威胁,因此需要采取适当的战略来减少和缓解这种状况。为解决这一问题,我们采用了自回归分布滞后(ARDL)技术,区分二氧化碳驱动因素的长期和短期影响。格兰杰因果关系被用来分析序列之间的因果关系。研究使用了肯尼亚 1990 年至 2022 年的时间序列数据。短期和长期结果表明,技术与碳排放之间存在负相关关系。具体而言,技术的提高会减少碳排放,而经济增长和外国直接投资流入的增加会增加碳排放。这项研究确定了肯尼亚技术与碳排放之间的负相关关系。这意味着技术创新可以提高劳动生产率和资源利用率,从而减少碳排放。因此,肯尼亚应加强对低碳高效技术的研究和利用,使经济增长与环境污染脱钩。在此基础上,提出了各种战略,包括利用不同的清洁技术生产可再生燃料。符合环境法规的外国直接投资以及使用先进的绿色和清洁技术有助于减轻技术进步对环境的负面影响。此外,技术进步,特别是信息和通信技术的进步,将减少温室气体排放,改善环境质量。
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引用次数: 0
Noise Pollution Status in South-South Nigeria 尼日利亚南部地区的噪声污染状况
Pub Date : 2024-02-05 DOI: 10.9734/ajgr/2024/v7i1218
Ohaeri, E. C., Obafemi A. A.
Noise pollution has gotten more significant as cities have grown more densely populated. This study aimed to assess the noise pollution level in the capital cities of Awa-Ibom, Bayelsa Calabar and Rivers State, South-South, Nigeria. Noise level measurement was conducted using Noise Level Meter (NM102). Noise level measurement for all sampling locations were conducted on working days (Monday through Friday) between February 2022 and January 2023.  Results showed that noise concentration in Port Harcourt ranged between 31 and 103 db(A), 31 and 103 db(A) in Calabar, 32.1-90.1 in Uyo and 30.1-83 db(A) in Yenagoa. The noise levels in Rivers, Calabar and Uyo exceeded the WHO limit of 90 db(A). This has great consequence on the comfort and health of persons residing close to areas with high noise generation. Measure to reduce noise pollution should be put in place in these cities.
随着城市人口越来越密集,噪声污染也越来越严重。本研究旨在评估尼日利亚南部阿瓦伊博姆、巴耶尔萨卡拉巴尔和河流州首府城市的噪声污染水平。噪音水平测量使用噪音水平仪(NM102)进行。2022 年 2 月至 2023 年 1 月期间,在工作日(周一至周五)对所有采样地点进行了噪声级测量。 结果显示,哈科特港的噪音浓度在 31 至 103 db(A)之间,卡拉巴尔在 31 至 103 db(A)之间,乌约在 32.1 至 90.1 之间,耶纳戈阿在 30.1 至 83 db(A)之间。里弗斯、卡拉巴尔和乌约的噪音水平都超过了世界卫生组织规定的 90 分贝(A)上限。这对居住在高噪音地区附近的居民的舒适度和健康产生了极大的影响。应在这些城市采取减少噪音污染的措施。
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引用次数: 0
Noise Pollution Status in South-South Nigeria 尼日利亚南部地区的噪声污染状况
Pub Date : 2024-02-05 DOI: 10.9734/ajgr/2024/v7i1218
Ohaeri, E. C., Obafemi A. A.
Noise pollution has gotten more significant as cities have grown more densely populated. This study aimed to assess the noise pollution level in the capital cities of Awa-Ibom, Bayelsa Calabar and Rivers State, South-South, Nigeria. Noise level measurement was conducted using Noise Level Meter (NM102). Noise level measurement for all sampling locations were conducted on working days (Monday through Friday) between February 2022 and January 2023.  Results showed that noise concentration in Port Harcourt ranged between 31 and 103 db(A), 31 and 103 db(A) in Calabar, 32.1-90.1 in Uyo and 30.1-83 db(A) in Yenagoa. The noise levels in Rivers, Calabar and Uyo exceeded the WHO limit of 90 db(A). This has great consequence on the comfort and health of persons residing close to areas with high noise generation. Measure to reduce noise pollution should be put in place in these cities.
随着城市人口越来越密集,噪声污染也越来越严重。本研究旨在评估尼日利亚南部阿瓦伊博姆、巴耶尔萨卡拉巴尔和河流州首府城市的噪声污染水平。噪音水平测量使用噪音水平仪(NM102)进行。2022 年 2 月至 2023 年 1 月期间,在工作日(周一至周五)对所有采样地点进行了噪声级测量。 结果显示,哈科特港的噪音浓度在 31 至 103 db(A)之间,卡拉巴尔在 31 至 103 db(A)之间,乌约在 32.1 至 90.1 之间,耶纳戈阿在 30.1 至 83 db(A)之间。里弗斯、卡拉巴尔和乌约的噪音水平都超过了世界卫生组织规定的 90 分贝(A)上限。这对居住在高噪音地区附近的居民的舒适度和健康产生了极大的影响。应在这些城市采取减少噪音污染的措施。
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引用次数: 0
Disaster Management Cycle 灾害管理周期
Pub Date : 2024-02-03 DOI: 10.9734/ajgr/2024/v7i1217
Renu Bali
Last decade has been a decade (2000-2019) of some of the major disaster occurrences. Majority of these disasters were climate based. Between 2000-2019 there were 7348 major recorded disaster events worldwide as compared to 4212 between 1980-1999 These disasters claimed 12mn lives and affected more than 4.03 billion people (2000 – 2019). Asia suffered the highest number of disaster events due to size of the continents, its physiography and high density of population. In terms of affected countries globally, India with 321 events was third highest in terms of economic losses and loss of lives [1]. Widespread occurrences of disasters and heavy destruction in terms of loss of life and property and damage to ecosystems has highlighted the issue of understanding and managing the disasters effectively whether they are natural or caused by human neglect and interventions. Disaster management and overall development of a region should go simultaneously, in fact, development should include disaster management processes.  Occurrence of disasters disrupt the process of development by causing damage to the developmental efforts which have taken long time to achieve. It often pushes the countries back by several decades. Thus, efficient management of disasters before their occurrence, rather than responding to them after the occurrence has, in recent times, received increased attention both within India and abroad.
过去十年(2000-2019 年)是一些重大灾害发生的十年。这些灾害大多与气候有关。2000-2019 年间,全球共发生了 7348 起重大灾害事件,而 1980-1999 年间则发生了 4212 起。这些灾害夺走了 1200 万人的生命,影响了 40.3 亿多人(2000-2019 年)。由于各大洲的面积、地形和人口密度,亚洲遭受的灾害事件数量最多。在全球受灾国家中,印度发生了 321 起灾害事件,在经济损失和生命损失方面位居第三[1]。灾害的广泛发生以及在生命和财产损失和生态系统破坏方面造成的严重破坏,凸显了有效了解和管理灾害的问题,无论这些灾害是自然发生的还是人为忽视和干预造成的。灾害管理与一个地区的整体发展应同步进行,事实上,发展应包括灾害管理过程。 灾害的发生会扰乱发展进程,对经过长期努力才取得的发展成果造成破坏。这往往会使国家倒退几十年。因此,在灾害发生之前对其进行有效管理,而不是在灾害发生之后对其做出反应,近来在印度国内和国外都受到了越来越多的关注。
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引用次数: 0
Disaster Management Cycle 灾害管理周期
Pub Date : 2024-02-03 DOI: 10.9734/ajgr/2024/v7i1217
Renu Bali
Last decade has been a decade (2000-2019) of some of the major disaster occurrences. Majority of these disasters were climate based. Between 2000-2019 there were 7348 major recorded disaster events worldwide as compared to 4212 between 1980-1999 These disasters claimed 12mn lives and affected more than 4.03 billion people (2000 – 2019). Asia suffered the highest number of disaster events due to size of the continents, its physiography and high density of population. In terms of affected countries globally, India with 321 events was third highest in terms of economic losses and loss of lives [1]. Widespread occurrences of disasters and heavy destruction in terms of loss of life and property and damage to ecosystems has highlighted the issue of understanding and managing the disasters effectively whether they are natural or caused by human neglect and interventions. Disaster management and overall development of a region should go simultaneously, in fact, development should include disaster management processes.  Occurrence of disasters disrupt the process of development by causing damage to the developmental efforts which have taken long time to achieve. It often pushes the countries back by several decades. Thus, efficient management of disasters before their occurrence, rather than responding to them after the occurrence has, in recent times, received increased attention both within India and abroad.
过去十年(2000-2019 年)是一些重大灾害发生的十年。这些灾害大多与气候有关。2000-2019 年间,全球共发生了 7348 起重大灾害事件,而 1980-1999 年间则发生了 4212 起。这些灾害夺走了 1200 万人的生命,影响了 40.3 亿多人(2000-2019 年)。由于各大洲的面积、地形和人口密度,亚洲遭受的灾害事件数量最多。在全球受灾国家中,印度发生了 321 起灾害事件,在经济损失和生命损失方面位居第三[1]。灾害的广泛发生以及在生命和财产损失和生态系统破坏方面造成的严重破坏,凸显了有效了解和管理灾害的问题,无论这些灾害是自然发生的还是人为忽视和干预造成的。灾害管理与一个地区的整体发展应同步进行,事实上,发展应包括灾害管理过程。 灾害的发生会扰乱发展进程,对经过长期努力才取得的发展成果造成破坏。这往往会使国家倒退几十年。因此,在灾害发生之前对其进行有效管理,而不是在灾害发生之后对其做出反应,近来在印度国内和国外都受到了越来越多的关注。
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引用次数: 0
期刊
Asian Journal of Geographical Research
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