Bulletin of Geography-Physical Geography Series最新文献_第2页

Assessment of vegetation cover dynamics in the agro-ecological Zones of Nigeria 尼日利亚农业生态区植被覆盖动态评估

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-05-31 DOI: 10.12775/bgeo-2022-0002

O. Adeaga, O. Lawal, O. Adedeji, Olutosin Akinbaloye

{"title":"Assessment of vegetation cover dynamics in the agro-ecological Zones of Nigeria","authors":"O. Adeaga, O. Lawal, O. Adedeji, Olutosin Akinbaloye","doi":"10.12775/bgeo-2022-0002","DOIUrl":"https://doi.org/10.12775/bgeo-2022-0002","url":null,"abstract":"The drastic vegetation loss of about 22% in 12 years across agro-ecological zones (AEZs) in Nigeria, which can be attributed to the impact of climate and anthropogenic activities on vegetation dynamics within the context of socio-economics, calls for concern. In this study, remotely sensed data from the European Space Agency Land Use/Land Cover dataset, TAMSAT rainfall data, and MODIS NDVI dataset were used to examine changes in vegetation dynamics and monitor vegetation health in the AEZs based on the Normalised Difference Vegetation Index (NDVI). The study showed that vegetation cover has been decreasing tremendously at an alarming rate in most of the zones, while different drivers (change agents) have been responsible for the losses. The analysis shows that, between 2003 and 2018, the forestland cover gained 9,768.88 km2 and lost 40,891.6 km2, with a total net decrease of 31,122.73 km2. Contribution to the net change in forestland is usually converted to wetland, urban, cropland and grassland, across the varied ecosystem. The need for up to-date and accurate land-cover information is key to developing an appropriate mitigation strategy within the context of socio-economic sustainability across AEZs in Nigeria.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87443214","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

Integrating geospatial techniques and field survey to assess the changing nature of meander movements and meander geometry of Raidak-I River in the Himalayan foothills, West Bengal 结合地理空间技术和实地调查，评估西孟加拉邦喜玛拉雅山麓raiak - i河曲流运动和曲流几何形状的变化性质

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-05-31 DOI: 10.12775/bgeo-2022-0001

Md. Hasanuzzaman, Mehedi Hasan Mandal, S. Mandal

{"title":"Integrating geospatial techniques and field survey to assess the changing nature of meander movements and meander geometry of Raidak-I River in the Himalayan foothills, West Bengal","authors":"Md. Hasanuzzaman, Mehedi Hasan Mandal, S. Mandal","doi":"10.12775/bgeo-2022-0001","DOIUrl":"https://doi.org/10.12775/bgeo-2022-0001","url":null,"abstract":"Channel migration and resultant meander movements are the two important fluvial processes found in the riparian environment of a river basin. The present research explores the changing nature of the meander movements and meander geometry of the Raidak-I River in the Himalayan foothill region using geospatial tools. The study incorporated Landsat data (satellite imageries) for the years 1972, 1980, 1988, 2004, 2012 and 2021 and the whole study has been segmented into five periods i.e., 1972–1980, 1980–1988, 1988–2004, 2004–2012 and 2012–2021 to examine which type of meander movement dominates in the Raidak-I River within a particular time frame and how the nature of the meander movements is being changed over time. Bank lines of different periods have been superimposed with the help of the overlay analysis method in ArcGIS software (Version 10.8) to obtain the results. Furthermore, Arc-Extension tools have also been used to measure the meander geometry. Twelve active river bends have been identified to study meander geometry of sinuosity indices, meander length, meander width, meander-ratio, channel width and radius of curvature from 1972 to 2021. Initially, lateral movements predominated but, in the late-stage, rotational movement became much more prominent, which indicates dynamicity of the river channel in recent time. The cross-sectional study revealed that a convex bank has frequently been replaced with a concave bank and vice versa. The study finds human intervention – especially the construction of embankments – is the main reason behind such meander dynamics. The method we have used here is very simple, and thus can be considered for any part of the world and is very beneficial for identifying suitable sites for embankment construction, river restoration and channel management.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81111289","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: 1

Long-term trends in total cloud cover in the Arctic based on surface observations in 1985–2020 基于1985-2020年地面观测的北极总云量的长期趋势

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-05-31 DOI: 10.12775/bgeo-2022-0003

P. Sviashchennikov, Aleksandr Drugorub

引用次数: 0

The relationship between landscape and meteorological parameters on COVID-19 risk in a small-complex region of Yogyakarta, Indonesia 景观和气象参数与印度尼西亚日惹一个小型复杂地区COVID-19风险之间的关系

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0007

S. Purwantara, A. Ashari, S. T. Putro

{"title":"The relationship between landscape and meteorological parameters on COVID-19 risk in a small-complex region of Yogyakarta, Indonesia","authors":"S. Purwantara, A. Ashari, S. T. Putro","doi":"10.2478/bgeo-2021-0007","DOIUrl":"https://doi.org/10.2478/bgeo-2021-0007","url":null,"abstract":"Abstract As of the beginning of September 2021, the COVID-19 outbreak has lasted for more than 1.5 years in Indonesia, especially on Java and Bali islands. Yogyakarta Special Region, Indonesia, is one of the areas that continued to impose restrictions on community activities at the highest level for that period. This is due to the high rate of COVID-19 spread in this region. In this paper, the influence of landscape and meteorological parameters on the spread of COVID-19 risk in Yogyakarta is investigated. This study utilises primary and secondary data obtained from observation, remote-sensing-image interpretation, literature study and data documented by several agencies. The data were statistically analysed using simple linear regression and Geographic Information System (GIS) analysis utilising the average nearest neighbour. The results show that the variation in landscape and meteorological parameters in the Yogyakarta area does not have a significant impact on the spread of COVID-19. Ease of accessibility in various areas of Yogyakarta is able to overcome landscape barriers. This affects the random distribution pattern of COVID-19, clustering in plain areas that facilitate population mobility rather than in mountainous, volcanic or karst areas. Also, meteorological conditions with small variations do not impact the spread of COVID-19. In summary, this study shows that ease of mobility in a medium-wide area can encourage the spread of COVID-19 in various regions even though there are variations in its terrain and climate.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86123495","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: 1

Meghna riverbank erosion on lives and livelihoods of rural people: impacts and coping strategies 梅克纳河河岸侵蚀对农村人民生活和生计的影响和应对策略

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0004

Halima, Amima Najnin Maria

引用次数: 2

The influence of benzene air pollution on leukemia incidence and mortality rates 苯空气污染对白血病发病率和死亡率的影响

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0001

A. Pilarska, A. Pospieszyńska

{"title":"The influence of benzene air pollution on leukemia incidence and mortality rates","authors":"A. Pilarska, A. Pospieszyńska","doi":"10.2478/bgeo-2021-0001","DOIUrl":"https://doi.org/10.2478/bgeo-2021-0001","url":null,"abstract":"Abstract The following study identifies areas where adverse conditions related to benzene pollution are concurrent with leukaemia incidence and mortality (C91–C95). Moreover, it determines the similarities between benzene and leukaemia levels, as well and rules defining their co-occurrence. The analysis covered the period of 2015–2017. Data were obtained from Dane.gov.pl (number of leukaemia cases), the Polish National Cancer Registry website (number of deaths), the Local Data Bank of the Central Statistical Office (population data) and the Chief Inspectorate of Environmental Protection and the Air Quality Portal (data on air quality). Based on the conducted analysis, it was concluded that the following poviat towns have an unfavourable epidemic situation related to leukaemia: Kielce (incidence), Rzeszów (incidence), Elbląg (mortality); meanwhile, high leukaemia incidence and mortality co-occurred with high average benzene concentration in 2015–2017 in the following poviat towns: Kielce, Rybnik, Płock and Rzeszów. It was found that leukaemias belonging to the three-character ICD-10 categories C94, C95 and C92 show the highest rate of co-occurrence with benzene concentration. In addition, two main rules for the co-occurrence of benzene pollution and leukaemia were identified. It was also noted that it is necessary to continue the research for a longer time period, especially in the poviat towns of Kielce and Rzeszów.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82240201","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

Variability of nephological conditions in 1971–2010 based on measurements made at Bydgoszcz-Airport weather station 1971-2010年基于比得哥什机场气象站测量的肾脏条件变异性

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0006

E. Łaszyca

引用次数: 0

Geodiversity and geoheritage in the perspective of geography 地理学视角下的地质多样性与地质遗产

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0008

Vanda Claudino-Sales

引用次数: 4

Application of geospatial technologies in constructing a flash flood warning model in northern mountainous regions of Vietnam: a case study at TrinhTuong commune, Bat Xat district, LaoCai province 地理空间技术在越南北部山区山洪预警模型构建中的应用——以老蔡省八夏区TrinhTuong公社为例

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0003

Q. Kieu, D. V. Tran

{"title":"Application of geospatial technologies in constructing a flash flood warning model in northern mountainous regions of Vietnam: a case study at TrinhTuong commune, Bat Xat district, LaoCai province","authors":"Q. Kieu, D. V. Tran","doi":"10.2478/bgeo-2021-0003","DOIUrl":"https://doi.org/10.2478/bgeo-2021-0003","url":null,"abstract":"Abstract The model was constructed based on GIS spatial analyses, combined with Analytic Hierarchy Process (AHP) and Multi-Criterion Analysis method (MCA). The data gathered for the study were mainly from remote-sensing images, statistical data and surveys. Field experiments were conducted in Trinh Tuong Commune, Bat Xat District, Lao Cai province. This is a typical remote mountainous region of Vietnam in which flash floods often occur. The study analyzes and evaluates six primary factors that incite flash flood, namely: geomorphological characteristics, soil properties, forest and fractional vegetation cover types, local drainage basin slopes, maximum average rainfall of various years, and the river/stream density of the region. The zoning map showing flash flood potentials has determined that 19.91% of the area had an extremely high risk of flash flood occurrence, 64.92% of the area had a medium risk, and 15.17% had a low or very low risk. Based on the employment of daily maximum rainfalls as the primary factor, an online flash flood warning model was constructed for areas with a “high” or “very high” risk of flash flood occurrence.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74206298","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

Microscale spatial variation of soil erodibility factor (K) in a young hummocky moraine landscape in Northern Poland 波兰北部年轻丘状冰碛地貌土壤可蚀性因子(K)的微尺度空间变异

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2021-06-01 DOI: 10.2478/bgeo-2021-0005

Hanna Radziuk, M. Świtoniak, M. Nowak

{"title":"Microscale spatial variation of soil erodibility factor (K) in a young hummocky moraine landscape in Northern Poland","authors":"Hanna Radziuk, M. Świtoniak, M. Nowak","doi":"10.2478/bgeo-2021-0005","DOIUrl":"https://doi.org/10.2478/bgeo-2021-0005","url":null,"abstract":"Abstract Soil erodibility is one of the crucial parameters for modelling soil erosion, expressed as the K-factor. The presented study tries to illustrate the spatial variance of K-factor on a local scale through the investigation of soil properties and descriptive spatial analysis utilising GIS tools at microscale in a young hummocky moraine landscape in Northern Poland. The results of the interpolation of K-factor values illustrate their changing from high values in eroded pedons on the tops of hummocks to low values in kettle holes. The middle position is occupied by slightly and non-eroded pedons. The mean weight results were very similar to data that were found on the scale of Europe and Poland. In landscapes with heterogeneous soil cover, there are significant differences in maps based on different approaches to data visualisation. There are advantages and disadvantages to both (1) referring to mean values of the K index for soil contours representing different soil types and (2) interpolating the values obtained from individual points (GIS tool). Interpolation can be used for a thoroughly examined area with a high number of input points, while a map based on mean K index values for soil contours would be more effective in homogeneous areas.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87525060","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: 1