London’s approaches to tackling climate change after the 21st century are multifaceted and relatively systematic. The aim of this research paper is to analyse London’s actions in response to climate change and to draw out what valuable lessons London has for the world in terms of its response to climate change. This paper provides an in depth analysis of London’s policies and actions on climate mitigation in the areas of “greenhouse gas emissions” and “energy infrastructure”, and climate adaptation actions in the areas of “city green belt and urban afforestation”, “UHI and thermal crisis management” and “water supply infrastructure and sustainable drainage”. It then examines the positive aspects of these actions to determine what London has to say about climate change to the rest of the world and other cities. This paper also discovers that to effectively mitigate and adapt to climate change, London has not only established carbon reduction targets, but also created a large academic research network, represented by the LCCP. At the same time, London has developed a scientific climate change adaptation planning framework (P2R2) that focuses on four key areas: Economic, environmental, health, and infrastructure sectors, and three types of risks: Flooding, heat, and water supply, and emphasizes the dynamics and flexibility of each adaptation strategy
{"title":"Research and Experience Reference on London’s Response to Climate Change in the Twenty-first Century","authors":"Renrui Wang, Fuyuan Wang","doi":"10.30564/jgr.v6i1.5419","DOIUrl":"https://doi.org/10.30564/jgr.v6i1.5419","url":null,"abstract":"London’s approaches to tackling climate change after the 21st century are multifaceted and relatively systematic. The aim of this research paper is to analyse London’s actions in response to climate change and to draw out what valuable lessons London has for the world in terms of its response to climate change. This paper provides an in depth analysis of London’s policies and actions on climate mitigation in the areas of “greenhouse gas emissions” and “energy infrastructure”, and climate adaptation actions in the areas of “city green belt and urban afforestation”, “UHI and thermal crisis management” and “water supply infrastructure and sustainable drainage”. It then examines the positive aspects of these actions to determine what London has to say about climate change to the rest of the world and other cities. This paper also discovers that to effectively mitigate and adapt to climate change, London has not only established carbon reduction targets, but also created a large academic research network, represented by the LCCP. At the same time, London has developed a scientific climate change adaptation planning framework (P2R2) that focuses on four key areas: Economic, environmental, health, and infrastructure sectors, and three types of risks: Flooding, heat, and water supply, and emphasizes the dynamics and flexibility of each adaptation strategy","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124747964","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}
From data published by the Hong Kong SAR (HKSAR) government in their two sole fisheries surveys of 2006 and 2016/2017, the authors produced regional maps using spatial interpolation to more accurately describe and estimate the geographic coverage of changes in fishing production in Hong Kong waters since the ground trawl ban of 2012 December 31st. These suggest the fishing industry has adapted to smaller craft, and that fishing production increased in several areas in the period after the ground trawl ban came into effect. In addition, the maps enable a smoother assessment to be made of the geospatial changes in fishing production which have occurred since the ground trawl ban and suggest a ‘workaround’ by fishermen. In particular, small fishing craft known as sampans are able to take advantage by being more suitable vessels for areas such as narrower or shallower bays. Marine plastics pollution is also a proxy indicator of these activities, as evidenced by discarded fishing gear that includes plastic nets, floats, and other fishing boat equipment.
{"title":"Fishing Production and Fishing Changes in Hong Kong after the Ground Trawl Ban of 31st December 2012: A Geospatial Evaluation","authors":"A. Coleby, E. Grist","doi":"10.30564/jgr.v6i1.5315","DOIUrl":"https://doi.org/10.30564/jgr.v6i1.5315","url":null,"abstract":"From data published by the Hong Kong SAR (HKSAR) government in their two sole fisheries surveys of 2006 and 2016/2017, the authors produced regional maps using spatial interpolation to more accurately describe and estimate the geographic coverage of changes in fishing production in Hong Kong waters since the ground trawl ban of 2012 December 31st. These suggest the fishing industry has adapted to smaller craft, and that fishing production increased in several areas in the period after the ground trawl ban came into effect. In addition, the maps enable a smoother assessment to be made of the geospatial changes in fishing production which have occurred since the ground trawl ban and suggest a ‘workaround’ by fishermen. In particular, small fishing craft known as sampans are able to take advantage by being more suitable vessels for areas such as narrower or shallower bays. Marine plastics pollution is also a proxy indicator of these activities, as evidenced by discarded fishing gear that includes plastic nets, floats, and other fishing boat equipment. ","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128715847","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}
The purpose of this work is to evaluate the potential of Global Positioning System (GPS) measurements for the monitoring of aeolian and coastal dynamics. The studied sites are the Moulouya estuary, Bouarfa’s area and Tigri Chott. The study shows that GPS is used to determine the dune kinematics and the Moulouya estuary in 3-D with an annual temporal resolution and a sub-centimeter accuracy. The GPS measurements carried out between 2013 and 2021 have shown spatial and temporal variations of the dune kinematics and Moulouya estuary. The results presented here show that the GPS measurements have the capability of continuously surveying the geomorphological entities’ kinematics with small and slow displacements and thus, they could complement conventional topometric techniques in a warning system.
{"title":"Using the GPS Station to Study Wind and Coastal Morpho-dynamics in North-eastern Morocco","authors":"Abdelkader Sbai, O. Mouadili","doi":"10.30564/jgr.v6i1.5270","DOIUrl":"https://doi.org/10.30564/jgr.v6i1.5270","url":null,"abstract":"The purpose of this work is to evaluate the potential of Global Positioning System (GPS) measurements for the monitoring of aeolian and coastal dynamics. The studied sites are the Moulouya estuary, Bouarfa’s area and Tigri Chott. The study shows that GPS is used to determine the dune kinematics and the Moulouya estuary in 3-D with an annual temporal resolution and a sub-centimeter accuracy. The GPS measurements carried out between 2013 and 2021 have shown spatial and temporal variations of the dune kinematics and Moulouya estuary. The results presented here show that the GPS measurements have the capability of continuously surveying the geomorphological entities’ kinematics with small and slow displacements and thus, they could complement conventional topometric techniques in a warning system.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128373705","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}
The inefficiency of the aviation industry and the persistent rise in aviation hazards have been linked to weather phenomena. As a result, researchers are looking for better solutions to the problem. The study examined the impact of thunderstorms on flight operations at Murtala Mohammed International Airport, Lagos. The data on thunderstorms and flight operations were sourced from Nigerian Meteorological Agency (NiMet) and Nigerian Airspace Management Agency (NAMA) respectively. In order to meet the research target, descriptive statistics (mean, standard deviation, and charts) and inferential statistics (Pearson’s Product Moment Correlation (PPMC) and Regression) were used. The significance level for all inferential analyses was set at 5% (0.05). The study revealed that 77.4% of thunderstorms occurred during the rainy season (April-October) while 22.6% occurred during the dry season (November-March). It also revealed some fluctuating movements of a thunderstorm in the study area. According to the findings, thunderstorms occur most frequently at the airport in June and less frequently in January and December. The study also discovered that thunderstorms at the airport are positively and significantly related to flight delays and cancellations, while the association between flight diversions and thunderstorm occurrence is positive but statistically insignificant. Furthermore, flight delays, flight diversions, and flight cancellations interact positively among themselves. The regression result of the study revealed that a 1% increase in thunderstorm occurrence leads to a 19.4% increase in flight delay, a 7.1% increase in flight cancellation, and a 4.3% increase in flight diversion. As a result, the study presented various regression models that may be utilized to make predictions. The study proposes consistent thunderstorm observation at the airport and steady forecasts using the regression models, based on the findings. However, it further recommends that pilots, air traffic controllers, and meteorologists be trained and retrained so that they can provide better and more efficient services.
航空业的低效率和航空灾害的持续增加与天气现象有关。因此，研究人员正在寻找更好的解决方案。该研究调查了雷暴对拉各斯穆尔塔拉穆罕默德国际机场航班运行的影响。雷暴和飞行的数据分别来自尼日利亚气象局(NiMet)和尼日利亚空域管理局(NAMA)。为了达到研究目标，使用了描述性统计(均值、标准差、图表)和推理统计(Pearson’s Product Moment Correlation, PPMC)和回归统计(Regression)。所有推论分析的显著性水平设为5%(0.05)。研究表明，77.4%的雷暴发生在雨季(4 - 10月)，22.6%发生在旱季(11 - 3月)。它还揭示了研究区域雷暴的一些波动运动。根据调查结果，雷暴在6月份出现的频率最高，而在1月和12月出现的频率较低。研究还发现，机场雷暴与航班延误和取消呈正相关，而航班备降与雷暴发生呈正相关，但统计上不显著。此外，航班延误、航班备降和航班取消三者之间存在积极的相互作用。本研究的回归结果显示，雷暴发生次数每增加1%，航班延误增加19.4%，航班取消增加7.1%，航班备降增加4.3%。因此，本研究提出了各种可用于预测的回归模型。研究建议在机场进行持续的雷暴观测，并在此基础上使用回归模型进行稳定的预报。然而，它进一步建议对飞行员、空中交通管制员和气象学家进行培训和再培训，以便他们能够提供更好、更有效的服务。
{"title":"Assessment of the Impacts of Thunderstorm on Flight Operations at Murtala Mohammed International Airport, Ikeja, Lagos State, Nigeria","authors":"I. C. Onwuadiochi, O. S. Egede, A. C. Udeogu","doi":"10.30564/jgr.v6i1.5057","DOIUrl":"https://doi.org/10.30564/jgr.v6i1.5057","url":null,"abstract":"The inefficiency of the aviation industry and the persistent rise in aviation hazards have been linked to weather phenomena. As a result, researchers are looking for better solutions to the problem. The study examined the impact of thunderstorms on flight operations at Murtala Mohammed International Airport, Lagos. The data on thunderstorms and flight operations were sourced from Nigerian Meteorological Agency (NiMet) and Nigerian Airspace Management Agency (NAMA) respectively. In order to meet the research target, descriptive statistics (mean, standard deviation, and charts) and inferential statistics (Pearson’s Product Moment Correlation (PPMC) and Regression) were used. The significance level for all inferential analyses was set at 5% (0.05). The study revealed that 77.4% of thunderstorms occurred during the rainy season (April-October) while 22.6% occurred during the dry season (November-March). It also revealed some fluctuating movements of a thunderstorm in the study area. According to the findings, thunderstorms occur most frequently at the airport in June and less frequently in January and December. The study also discovered that thunderstorms at the airport are positively and significantly related to flight delays and cancellations, while the association between flight diversions and thunderstorm occurrence is positive but statistically insignificant. Furthermore, flight delays, flight diversions, and flight cancellations interact positively among themselves. The regression result of the study revealed that a 1% increase in thunderstorm occurrence leads to a 19.4% increase in flight delay, a 7.1% increase in flight cancellation, and a 4.3% increase in flight diversion. As a result, the study presented various regression models that may be utilized to make predictions. The study proposes consistent thunderstorm observation at the airport and steady forecasts using the regression models, based on the findings. However, it further recommends that pilots, air traffic controllers, and meteorologists be trained and retrained so that they can provide better and more efficient services.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116759159","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}
The peri-urban area is a transitional zone between the city and its hinterlands characterized by mixed land use and intensive flows of resources, people, goods, and services from and to the city center. These zones are generally misguided and haphazardly developed without a proper planning framework. The peri-urban area at present will be the urban area in the future; therefore, it needs planning intervention in its initial stage of growth. Katahari, a peri-urban area of Biratnagar metropolitan city, is developing a spontaneous lack of land use plans. Recently, the Government of Nepal has encouraged the local government to implement land use plans in the provided framework, policy, and guidelines. This study, in this context, attempts to analyze and identify land use issues and potential zones for Katahari rural municipality that also supports planning urban development in the future. The study is based on primary and secondary data and information supported by maps and figures. It is concluded that Katahari has been developed as a multi-function center adjoining the Biratnagar metropolitan city, and future expansion of the city will cover a wide range of rural municipalities. The postal highway that passes through it has attracted a wide range of urban functions. Agriculture, residential, commercial, and industrial are the main land use category at present and needs development control through providing land use zoning and related planning instruments through the increasing role of the stakeholder and the government agencies in the decision-making processes and implementation of spatial development frameworks to regulate peri-urban development in the area which will guide the future planning for liability, economic viability, social inclusion, and environmental sustainability in the area. Spill-over development activities of Biratnagar, have increased the number of economic activities, population growth, and mixed-use development.
{"title":"Peri-urban Development: Discussion with Land Use Zoning, Statutory Provision, and Issues inside Katahari Rural Municipality, Nepal","authors":"Kedar Dahal","doi":"10.30564/jgr.v6i1.5113","DOIUrl":"https://doi.org/10.30564/jgr.v6i1.5113","url":null,"abstract":"The peri-urban area is a transitional zone between the city and its hinterlands characterized by mixed land use and intensive flows of resources, people, goods, and services from and to the city center. These zones are generally misguided and haphazardly developed without a proper planning framework. The peri-urban area at present will be the urban area in the future; therefore, it needs planning intervention in its initial stage of growth. Katahari, a peri-urban area of Biratnagar metropolitan city, is developing a spontaneous lack of land use plans. Recently, the Government of Nepal has encouraged the local government to implement land use plans in the provided framework, policy, and guidelines. This study, in this context, attempts to analyze and identify land use issues and potential zones for Katahari rural municipality that also supports planning urban development in the future. The study is based on primary and secondary data and information supported by maps and figures. It is concluded that Katahari has been developed as a multi-function center adjoining the Biratnagar metropolitan city, and future expansion of the city will cover a wide range of rural municipalities. The postal highway that passes through it has attracted a wide range of urban functions. Agriculture, residential, commercial, and industrial are the main land use category at present and needs development control through providing land use zoning and related planning instruments through the increasing role of the stakeholder and the government agencies in the decision-making processes and implementation of spatial development frameworks to regulate peri-urban development in the area which will guide the future planning for liability, economic viability, social inclusion, and environmental sustainability in the area. Spill-over development activities of Biratnagar, have increased the number of economic activities, population growth, and mixed-use development.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126094871","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}
China’s urbanization development has entered the “second half”, which is at a critical stage of transition from the middle stages to the mature stage. The metropolitan area formed by the mega-city radiating the development of surrounding cities and counties is an important spatial carrier of urbanization. The rural characteristic industry is the main path to promote regional economic development and urban-rural integration in the metropolitan area. Exploring the development characteristics of rural characteristic industries in the metropolitan area has important theoretical and practical signifi cance for promoting the eff ective connection between urban-rural integration and rural revitalization of the metropolitan area and improving the development quality of the metropolitan area. Take the Xi’an metropolitan area as an example and adopt kernel density analysis and other methods to reveal the spatial diff erentiation rules of rural characteristic industries. On this basis, the three-dimensional development strategy of “industry-spatial-institutional” for the development of the rural characteristic industry is proposed, to provide theoretical reference for the development of rural characteristic industry in metropolitan areas.
{"title":"Types, Distribution Characteristics, and Development Strategies of Rural Characteristic Industry in Xi’an Metropolitan Area","authors":"Xiaomeng Fu, Pei Zhang, Z. Zhang","doi":"10.30564/jgr.v5i4.5074","DOIUrl":"https://doi.org/10.30564/jgr.v5i4.5074","url":null,"abstract":"China’s urbanization development has entered the “second half”, which is at a critical stage of transition from the middle stages to the mature stage. The metropolitan area formed by the mega-city radiating the development of surrounding cities and counties is an important spatial carrier of urbanization. The rural characteristic industry is the main path to promote regional economic development and urban-rural integration in the metropolitan area. Exploring the development characteristics of rural characteristic industries in the metropolitan area has important theoretical and practical signifi cance for promoting the eff ective connection between urban-rural integration and rural revitalization of the metropolitan area and improving the development quality of the metropolitan area. Take the Xi’an metropolitan area as an example and adopt kernel density analysis and other methods to reveal the spatial diff erentiation rules of rural characteristic industries. On this basis, the three-dimensional development strategy of “industry-spatial-institutional” for the development of the rural characteristic industry is proposed, to provide theoretical reference for the development of rural characteristic industry in metropolitan areas. ","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130838962","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}
João Guilherme da Costa Braga França, Isabela Kopperschmidt de Oliveira, L. Oliveira
The recent events and constant global changes show the importance of rethinking city planning. In this context, the 15-Minute City concept got important as it brings people closer to activities and services, through short trips by active modes, being the key to a sustainable city. Based on this concept, this paper analysed the spatial accessibility of residents of Belo Horizonte (Brazil) to two establishments essential to the quality of life: bakeries and supermarkets. The analyses were made through the influence areas, spatial clusters, and the Local Indicators of Spatial Association. The results showed that bakeries are more accessible than supermarkets, which are not accessible to the entire population, especially in low-density and low-income regions. In addition, areas with potential for new projects were identified by the relationship between existing facilities (supermarkets or bakeries) and population density/income. Finally, the results highlight the challenges for developing sustainable cities considering the 15-Minute City concept throughout the territory of Belo Horizonte.
{"title":"Spatial Accessibility of Bakeries and Supermarkets in Belo Horizonte, Brazil","authors":"João Guilherme da Costa Braga França, Isabela Kopperschmidt de Oliveira, L. Oliveira","doi":"10.30564/jgr.v5i4.5106","DOIUrl":"https://doi.org/10.30564/jgr.v5i4.5106","url":null,"abstract":"The recent events and constant global changes show the importance of rethinking city planning. In this context, the 15-Minute City concept got important as it brings people closer to activities and services, through short trips by active modes, being the key to a sustainable city. Based on this concept, this paper analysed the spatial accessibility of residents of Belo Horizonte (Brazil) to two establishments essential to the quality of life: bakeries and supermarkets. The analyses were made through the influence areas, spatial clusters, and the Local Indicators of Spatial Association. The results showed that bakeries are more accessible than supermarkets, which are not accessible to the entire population, especially in low-density and low-income regions. In addition, areas with potential for new projects were identified by the relationship between existing facilities (supermarkets or bakeries) and population density/income. Finally, the results highlight the challenges for developing sustainable cities considering the 15-Minute City concept throughout the territory of Belo Horizonte.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134195301","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}
The massive scale of new-generation rural-urban migrants in China has attracted extensive scholarly attention in recent years. While previous studies on China’s rural migrant workers focus on migrants’ individual settlement intentions, migrant’s family migration decision-making and the intergenerational differences between the old-generation migrants and new-generation migrants are underexplored. Based on the data of 2017 China Migrants Dynamic Survey, this paper adopts a multilevel logistic regression approach to explore family and destination factors influencing family migration decision of China’s new generation rural migrant workers. The empirical results reveal that both the migrants’ family and destination attributes significantly influence their family migration decision. The demographic and socioeconomic characteristics of family have been pivotal factors underlying family migration decision of China’s new generation rural-urban migrants, while 16.9% of the chances is explained by between-destination differences. Self-employed migrants with housing properties in host cities, long migration duration and high-income level are more likely to migrate with their family members. Yet, the possibility of family migration is found to be significantly and negatively correlated with the age, education level, number of children and inter-provincial mobility of the new generation migrant workers. In addition, new generation rural-urban migrants’ family migration is more likely to be found in cities with service-oriented industry structure, better environmental quality, and higher hukou barriers which is possibly related to more job opportunities. These research findings not only complement the existing literature on China’s new generation rural-urban migrants, but also have important policy implications for reforming hukou system and enhancing social integration of rural-to-urban migrant population.
{"title":"What Influences Family Migration Decision of China’s New Generation Rural-urban Migrants? A Multilevel Logistic Regression Analysis","authors":"Meiling Hou, Xiaoyan Zhou, Ronghao Jiang","doi":"10.30564/jgr.v5i4.4996","DOIUrl":"https://doi.org/10.30564/jgr.v5i4.4996","url":null,"abstract":"The massive scale of new-generation rural-urban migrants in China has attracted extensive scholarly attention in recent years. While previous studies on China’s rural migrant workers focus on migrants’ individual settlement intentions, migrant’s family migration decision-making and the intergenerational differences between the old-generation migrants and new-generation migrants are underexplored. Based on the data of 2017 China Migrants Dynamic Survey, this paper adopts a multilevel logistic regression approach to explore family and destination factors influencing family migration decision of China’s new generation rural migrant workers. The empirical results reveal that both the migrants’ family and destination attributes significantly influence their family migration decision. The demographic and socioeconomic characteristics of family have been pivotal factors underlying family migration decision of China’s new generation rural-urban migrants, while 16.9% of the chances is explained by between-destination differences. Self-employed migrants with housing properties in host cities, long migration duration and high-income level are more likely to migrate with their family members. Yet, the possibility of family migration is found to be significantly and negatively correlated with the age, education level, number of children and inter-provincial mobility of the new generation migrant workers. In addition, new generation rural-urban migrants’ family migration is more likely to be found in cities with service-oriented industry structure, better environmental quality, and higher hukou barriers which is possibly related to more job opportunities. These research findings not only complement the existing literature on China’s new generation rural-urban migrants, but also have important policy implications for reforming hukou system and enhancing social integration of rural-to-urban migrant population.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114157916","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}
Egai Ayibawari O., E. Akpofure, Digha Opaminola Nicholas
The article is the investigation of heavy metals pollution on surface waterin Ikoli River and Epie creek in Yenagoa, metropolis, Bayelsa State. Pb,Cd, Ni, Cr, Fe, Zn was determined and evaluated using GeographicalInformation System. Zinc concentration was below the permissible limitof 3 mg/L in all the locations sampled. Iron is 77.78% below the limit ofWHO 2011 of 0.3 mg/L while other heavy metals examined in Ikoli Riverand Epie creek are highly polluted. The pollution index for contaminationindex shows 11.11% sample are high and 88.89% are low while theevaluation of heavy metal index and the pollution index load of the heavymetals contain 22.11% of the sample are low and 77.78% are high whichimply the Ikoli River and Epie creek is polluted. Multivariate treatment ofthe result revealed a good correlation between the PCA and HCA, whichshowed activities of natural processes and man influenced environmentalsources of the heavy metals which were mainly products of automobilesexhaust, water tank leakages as well as dumping of radioactive wastes andburning. The study investigated successfully the potential use of GIS withthe help of multiple criteria decision analysis to predict and characterizeareas of high pollution, medium, and low pollution in the study area.
{"title":"Comparative Assessment of Heavy Metals Pollution in Surface Water in Ikoli River and Epie Creek in Yenagoa Metropolis Using Geographical Information System","authors":"Egai Ayibawari O., E. Akpofure, Digha Opaminola Nicholas","doi":"10.30564/jgr.v5i3.4696","DOIUrl":"https://doi.org/10.30564/jgr.v5i3.4696","url":null,"abstract":"The article is the investigation of heavy metals pollution on surface waterin Ikoli River and Epie creek in Yenagoa, metropolis, Bayelsa State. Pb,Cd, Ni, Cr, Fe, Zn was determined and evaluated using GeographicalInformation System. Zinc concentration was below the permissible limitof 3 mg/L in all the locations sampled. Iron is 77.78% below the limit ofWHO 2011 of 0.3 mg/L while other heavy metals examined in Ikoli Riverand Epie creek are highly polluted. The pollution index for contaminationindex shows 11.11% sample are high and 88.89% are low while theevaluation of heavy metal index and the pollution index load of the heavymetals contain 22.11% of the sample are low and 77.78% are high whichimply the Ikoli River and Epie creek is polluted. Multivariate treatment ofthe result revealed a good correlation between the PCA and HCA, whichshowed activities of natural processes and man influenced environmentalsources of the heavy metals which were mainly products of automobilesexhaust, water tank leakages as well as dumping of radioactive wastes andburning. The study investigated successfully the potential use of GIS withthe help of multiple criteria decision analysis to predict and characterizeareas of high pollution, medium, and low pollution in the study area.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115583040","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}
IV David F. Richards, Adam M. Milewski, B. Gregory
Changes in sea level along the coastal southeastern United States (U.S.) influence the dynamic coastal response. In particular, the Southeast Coastal Network (SECN) of the National Park Service (NPS) has exhibited evidence of fluctuations in sea level which caused coastal erosion. Airborne LiDAR acquired from NOAA for Fort Matanzas National Monument, Fort Pulaski National Monument, Charles Pinckney National Historic Site, and Cape Lookout National Seashore were analyzed to identify changes in both elevation and the spatial volume of unconsolidated sedimentary material in the coastal southeast over time. Areas that exhibited an increase (deposited material) or decrease (eroded material) in elevation were mapped across the study area from 2006 to 2018. Results indicate a quasi-cyclic process where unconsolidated sediment distribution and the morphodynamic equilibrium changes with time. The coastal zones are steadily oscillating between the process of erosion and deposition affecting the coastal geomorphological dynamic. The use of LiDAR for evaluating coastal sustainability and resiliency due to this environmental phenomenon is clear.
{"title":"The Use of Airborne LiDAR in Assessing Coastal Erosion in the Southeastern USA","authors":"IV David F. Richards, Adam M. Milewski, B. Gregory","doi":"10.30564/jgr.v5i3.4762","DOIUrl":"https://doi.org/10.30564/jgr.v5i3.4762","url":null,"abstract":"Changes in sea level along the coastal southeastern United States (U.S.) influence the dynamic coastal response. In particular, the Southeast Coastal Network (SECN) of the National Park Service (NPS) has exhibited evidence of fluctuations in sea level which caused coastal erosion. Airborne LiDAR acquired from NOAA for Fort Matanzas National Monument, Fort Pulaski National Monument, Charles Pinckney National Historic Site, and Cape Lookout National Seashore were analyzed to identify changes in both elevation and the spatial volume of unconsolidated sedimentary material in the coastal southeast over time. Areas that exhibited an increase (deposited material) or decrease (eroded material) in elevation were mapped across the study area from 2006 to 2018. Results indicate a quasi-cyclic process where unconsolidated sediment distribution and the morphodynamic equilibrium changes with time. The coastal zones are steadily oscillating between the process of erosion and deposition affecting the coastal geomorphological dynamic. The use of LiDAR for evaluating coastal sustainability and resiliency due to this environmental phenomenon is clear.","PeriodicalId":165093,"journal":{"name":"Journal of Geographical Research","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765344","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}
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