Bulletin of Geography-Physical Geography Series最新文献

Modelling and mapping of soil erosion risk based on GIS and PAP/RAC guidelines in the watershed of Tassaoute (Central High-Atlas, Morocco) 基于GIS和PAP/RAC指南的Tassaoute流域土壤侵蚀风险建模和制图(摩洛哥中部高阿特拉斯)

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2023-06-30 DOI: 10.12775/bgeo-2023-0005

Khalid Ziadi, A. Barakat, Abdenbi El Aloui, Mustapha Ouayah, M. Namous

{"title":"Modelling and mapping of soil erosion risk based on GIS and PAP/RAC guidelines in the watershed of Tassaoute (Central High-Atlas, Morocco)","authors":"Khalid Ziadi, A. Barakat, Abdenbi El Aloui, Mustapha Ouayah, M. Namous","doi":"10.12775/bgeo-2023-0005","DOIUrl":"https://doi.org/10.12775/bgeo-2023-0005","url":null,"abstract":"Morocco watersheds, which provided many ecosystem services necessary for the socio-economic life of rural communities, are experiencing significant change and environmental problems. Therefore, examining potential soil erosion considered a major problem in the Moroccan highlands is very important to prioritize high erosion severity areas. Keeping in view of the above aspects, the present study aimed to evaluate and map areas at risk of water erosion in the upstream Tassaoute watershed (central High Atlas, Morocco), using the Priority Action Program/Regional Activity Center (PAP/RAC) method associated with Geographic Information Systems (GIS) and remote sensing. The PAP/RAC approach consisted of integrating the natural factors that influence water erosion, namely slope, lithology, vegetation cover and land use. This method provided an accurate cartographic product that reflects the reality of the state of soil degradation and the qualitative assessment of erosion. The generated erosion risk map of the study area showed that the phenomenon of erosion threatens this basin, especially in the middle and downstream, such that 40% of the basin surface has significant erosion and the high and very high degree of erosion represented 27% of the total surface of the study area. These results therefore demonstrated the PAP/CAR model reliability in assessing and mapping of water erosion risks in the upstream Tassaoute basin.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91369507","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

Detection of flood-hazard-prone zones using GIS modeling and AHP method in urban areas: the case of Amman Governorate 利用GIS建模和AHP方法在城市地区检测洪水易发区:以安曼省为例

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2023-06-28 DOI: 10.12775/bgeo-2023-0001

Noah Al-Sababhah

引用次数: 0

Shallow geothermal heat in Western Canada: climatic warming impact changes with time– depth 加拿大西部浅层地热:气候变暖影响随时间深度变化

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2023-06-28 DOI: 10.12775/bgeo-2023-0003

J. Majorowicz, J. Šafanda

引用次数: 0

Natural conditions for the development of lake tourism in Poland 波兰发展湖泊旅游的自然条件

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2023-06-28 DOI: 10.12775/bgeo-2023-0002

R. Skowron

引用次数: 1

Identification of prime factors of active river bank erosion in the lower course of Ganga Bhagirathi River: a study 恒河巴吉拉蒂河下游河岸活跃侵蚀的主要因素识别研究

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-12-21 DOI: 10.12775/bgeo-2022-0011

D. Ghosh

引用次数: 0

Temporal variations in the atmospheric pressure curve in the Bydgoszcz area 比得哥什地区大气压力曲线的时间变化

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-12-21 DOI: 10.12775/bgeo-2022-0010

E. Łaszyca

引用次数: 0

Time of aggregate destruction as a parameter of soil water stability within an agricultural hummocky moraine landscape in northern Poland 波兰北部农业丘状冰碛景观中作为土壤水稳定性参数的骨料破坏时间

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-12-06 DOI: 10.12775/bgeo-2022-0009

Hanna Radziuk, M. Świtoniak

{"title":"Time of aggregate destruction as a parameter of soil water stability within an agricultural hummocky moraine landscape in northern Poland","authors":"Hanna Radziuk, M. Świtoniak","doi":"10.12775/bgeo-2022-0009","DOIUrl":"https://doi.org/10.12775/bgeo-2022-0009","url":null,"abstract":"Slaking is a rapid wetting of soil aggregates that affects their stability in the face of the effects of water. The aggregate’s stability has an indirect influence on soil functioning through its minimising of soil erosion. Testing slaking is very simple, does not need additional complicated equipment and could be done for any point. Testing was performed for natural air-dry aggregates (7–10 mm) sampled from the arable layers of four different types of soils within a young hummocky moraine landscape: Eutric Regosol (Protocalcic), Haplic Luvisol (Protocalcic), Albic Luvisol, Mollic Gleysol. The soil tests were performed on a soil-erosive catena located in Chełmno Lake District (Northern Poland) from the tops of hummocks and from the shoulder to bottom part of depressions. The test results demonstrated a significant decrease in aggregate stability from Mollic Gleysol to Eutric Regosols (Protocalcic) – that is, from colluvial soils at depressions to completely eroded hummock-top soils. However, 75% of all aggregates in Eutric Regosols were unstable when time of aggregate destruction was less than 300 sec. Oppositely to Eutric Regosols laying on hummock tops, 70% of aggregates of Mollic Gleysols in depressions were water stable. The mean time for aggregate destruction for each soil from hummock-top to depression was 209 sec. for Eutric Regosol, 375 sec. for Haplic Luvisol, 616 sec. for Albic Luvisol and 772 sec. for Mollic Gleysol. The main soil properties that affected the time of aggregate destruction are clay content (very strong negative correlation; r=–0.72); soil organic carbon content (strong positive correlation; r=0.69), and content of secondary carbonates (strong negative correlation; r=–0.69).","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86032458","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

Rainfall dynamics in the Sudano-Sahelian zone of Nigeria under RCP 8.5 rcp8.5下尼日利亚苏丹-萨赫勒地区的降雨动态

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-11-30 DOI: 10.12775/bgeo-2022-0007

O. Adegun, S. Odunuga

{"title":"Rainfall dynamics in the Sudano-Sahelian zone of Nigeria under RCP 8.5","authors":"O. Adegun, S. Odunuga","doi":"10.12775/bgeo-2022-0007","DOIUrl":"https://doi.org/10.12775/bgeo-2022-0007","url":null,"abstract":"The study analysed the historical (1961–90) and projected rainfall variability for the rainy season expected in the near future (2021–50) at selected locations within the Komadugu-Yobe and Sokoto-Rima River Basins in the Sudano-Sahelian zone of northern Nigeria. Three models were utilised, and analyses were based on Representative Concentration Pathway (RCP) 8.5. Projected changes in mean, level of variability and distribution of rainfall were analysed using the Relative Percentage Change Method and the Precipitation Concentration Index (PCI), while the performance of the models was evaluated using the Nash–Sutcliffe Efficiency (NSE) index. The results show that changes in mean rainfall will be predominantly negative, with a minimum and maximum level of change of ˗1.02 per cent at Nguru, and ˗70.4 per cent at Jos, based on the IPSL-CM5A and HadGEM2-ES models, respectively. The rainy season of the baseline period varied between low and moderate variability, while the near future ranges between low and high levels of variability. The validation indicates acceptable levels of performance, with most values ranging between 0.0 and 1.0. The PCI for the near future suggests that the rainy season will be mainly characterised by uniform and near-uniform rainfall distribution. Hence, the projected negative changes and high variability of rainfall at some locations call for the development of an Adaptive Benefit Mechanism that will minimise future natural resource conflicts.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89544581","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

Statistical analysis of rainfall trend and its variability (1901–2020) in Kolkata, India 印度加尔各答1901-2020年降水趋势及其变率的统计分析

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-09-26 DOI: 10.12775/bgeo-2022-0006

MD JUBER ALAM, A. Majumder

{"title":"Statistical analysis of rainfall trend and its variability (1901–2020) in Kolkata, India","authors":"MD JUBER ALAM, A. Majumder","doi":"10.12775/bgeo-2022-0006","DOIUrl":"https://doi.org/10.12775/bgeo-2022-0006","url":null,"abstract":"The current study focuses on the altering historical rainfall data analysis and its variability in Kolkata (Kolkata Municipal Corporation), a metropolitan city in India. The research area experiences detrimental urban floods (pluvial floods) at near-annual regularity during the monsoon, and during the pre-monsoon seasons it commonly experiences water shortage problems. Analysing trends and temporal variability of rainfall over 120 years from 1901 to 2020 is the main objective of this study. The original Mann–Kendall (M–K) test has been applied to the rainfall dataset in conjunction with Sen’s Slope Estimator using Python 3.10, after the Durbin-Watson (DW) statistic initially suggested that there is no serial correlation effect. The M–K test, with a Kendall’s tau of 0.17058 (significant at a 5% level), shows an upward trend in annual rainfall between 1901 and 2020. The Sen’s slope, which measures the rate of change annually, has a value of 2.48152. Regression analysis and other dispersion measures are also used in this study to investigate the monthly rainfall trend and its variability. The phase-wise (30-year) analysis of annual rainfall variability reveals a considerable variation over 120 years. While fitting the linear regression line month by month over the entire period, mostly negative trends were found in the pre-monsoon and positive trends in the monsoon and post-monsoon seasons. The findings of this analysis could be useful to urban planners for water supply and management in the study area. The primary concern of planners for effectively managing rainwater and the accompanying issues should be the growing variability of annual precipitation.","PeriodicalId":43256,"journal":{"name":"Bulletin of Geography-Physical Geography Series","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83566579","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

Glaciers of the Koryak Highlands: assessment of the state using satellite images and field studies 科里亚克高原的冰川:利用卫星图像和实地研究对状态进行评估

IF 1.5

Bulletin of Geography-Physical Geography Series Pub Date : 2022-05-31 DOI: 10.12775/bgeo-2022-0004

M. Ananicheva, A. Aleinikov

{"title":"Glaciers of the Koryak Highlands: assessment of the state using satellite images and field studies","authors":"M. Ananicheva, A. Aleinikov","doi":"10.12775/bgeo-2022-0004","DOIUrl":"https://doi.org/10.12775/bgeo-2022-0004","url":null,"abstract":"The Koryak Highlands are a poorly explored area in terms of glaciation and its connection to climate. The purpose of this work is, using Sentinel-2 images (2019), to assess the state of glaciers at present against the background of climatic trends. Spatial patterns of trends of mean summer and annual temperatures, total precipitation and precipitation for the cold period from 1966 to 2019 were compiled: the temperature trends increase towards the Kamchatka Peninsula, and the mean summer temperature trends increase from 2 to 3°C. Precipitation trends increase from the continent to the coastal zone, with cold season trends changing from 0 to minus 50 mm. As a result, 212 glaciers and 279 rock glaciers were discovered in the Highlands, whereas 112 objects that had previously been recognised were not identified: either there is no glacier, or its area is less than 0.001 km2. The reduction in glacier areas compared to the USSR Glacier Inventory (1960s) varies widely by river basin, from 35 to 74%. The mean present glacier area varies from basin to basin from 0.4 to 0.11 km2. The glaciers are mainly corrie type of the N, NE and NW aspects. The change of average glacier firn line is from several tens of metres to 400–500 m.","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":"76998950","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