Ashfa Achmad, I. Ramli, N. Nizamuddin, Arief Gunawan, Siti Zahrina Fakhrana
Land use and land cover (LULC) have a significant impact on changes in the value of ecosystem services. Therefore, this study investigated the relationship between ecosystem service value (ESV) and LULC in Aceh Besar Regency by calculating nine ESV variables, namely gas regulation (GR), water supply (WS), soil formation (SF), waste treatment (WT), biodiversity protection (BP), food production (FP), raw materials (RM), recreation (RC), and culture (CT) on each type of land cover in Aceh Besar Regency in three years: 2000, 2010 and 2020. The results showed that both decades saw in all three years, there was a decrease in the value of the forest ecosystem in Aceh Besar Regency due to the addition of activities and population needs, resulting in the conversion of forest land into built-up areas. This indicates that there is a relationship between land use and land cover change and human activities that have the potential to negatively affect the value of ecosystem services.
{"title":"The impact of land use and land cover changes on ecosystem service value in Aceh Besar Regency, Aceh, Indonesia","authors":"Ashfa Achmad, I. Ramli, N. Nizamuddin, Arief Gunawan, Siti Zahrina Fakhrana","doi":"10.12775/bgeo-2024-0005","DOIUrl":"https://doi.org/10.12775/bgeo-2024-0005","url":null,"abstract":"Land use and land cover (LULC) have a significant impact on changes in the value of ecosystem services. Therefore, this study investigated the relationship between ecosystem service value (ESV) and LULC in Aceh Besar Regency by calculating nine ESV variables, namely gas regulation (GR), water supply (WS), soil formation (SF), waste treatment (WT), biodiversity protection (BP), food production (FP), raw materials (RM), recreation (RC), and culture (CT) on each type of land cover in Aceh Besar Regency in three years: 2000, 2010 and 2020. The results showed that both decades saw in all three years, there was a decrease in the value of the forest ecosystem in Aceh Besar Regency due to the addition of activities and population needs, resulting in the conversion of forest land into built-up areas. This indicates that there is a relationship between land use and land cover change and human activities that have the potential to negatively affect the value of ecosystem services.","PeriodicalId":502626,"journal":{"name":"Bulletin of Geography. Physical Geography Series","volume":"112 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360955","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 Suwałki Glacial Megaflood Landsystem documented in NE Poland led to further morphological analysis of bedforms that originated from glacial lake-outburst floods (GLOFs) in the central and eastern parts of the Augustów Plain. This article focuses on (1) the recognition of large-scale subaqueous dunes in the vicinity of Serwy Lake, (2) the creation of a database consisting of relevant morphometric parameters (lengths, heights and gradients of stoss and lee slopes) and indexes (steepness and asymmetry ratios) and (3) comparison with other landforms that undoubtably indicate glacial floods (e.g., Missoula, Altai, British Columbia, Wigry Lake). The remote identification and measurement of the megadunes’ morphometry based on LiDAR data and digital elevation model with resolution 1×1 m (using hillshade and geomorphons) yielded data characterising 254 bedforms. These represent two-dimensional large-scale subaqueous dunes, which have lengths varying between 23.6 and 241.8 m and average heights of 0.6–5.4 m. Moreover, their morphometric variation creates a continuum typical of subaqueous dunes and has similarities to prominent examples linked to GLOFs. The study is especially crucial due to the lack of a wide range of information about megadune development under unconfined settings during the Weichselian glaciation.
{"title":"Large-scale bedforms in the vicinity of Serwy Lake (NE Poland): their morphometry and links to the high-energy glaciofluvial environment","authors":"Mateusz Suwiński, Piotr Weckwerth","doi":"10.12775/bgeo-2024-0004","DOIUrl":"https://doi.org/10.12775/bgeo-2024-0004","url":null,"abstract":"The Suwałki Glacial Megaflood Landsystem documented in NE Poland led to further morphological analysis of bedforms that originated from glacial lake-outburst floods (GLOFs) in the central and eastern parts of the Augustów Plain. This article focuses on (1) the recognition of large-scale subaqueous dunes in the vicinity of Serwy Lake, (2) the creation of a database consisting of relevant morphometric parameters (lengths, heights and gradients of stoss and lee slopes) and indexes (steepness and asymmetry ratios) and (3) comparison with other landforms that undoubtably indicate glacial floods (e.g., Missoula, Altai, British Columbia, Wigry Lake). The remote identification and measurement of the megadunes’ morphometry based on LiDAR data and digital elevation model with resolution 1×1 m (using hillshade and geomorphons) yielded data characterising 254 bedforms. These represent two-dimensional large-scale subaqueous dunes, which have lengths varying between 23.6 and 241.8 m and average heights of 0.6–5.4 m. Moreover, their morphometric variation creates a continuum typical of subaqueous dunes and has similarities to prominent examples linked to GLOFs. The study is especially crucial due to the lack of a wide range of information about megadune development under unconfined settings during the Weichselian glaciation.","PeriodicalId":502626,"journal":{"name":"Bulletin of Geography. Physical Geography Series","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141371242","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 extraction of drainage network and watershed information is prerequisite for the study of watershed characteristics like morphometric analysis, which provides a basis for hydrological planning and modeling. The advanced tools of algorithms, Shuttle Radar Topographic Mission (SRTM) Digital Elevation Model (DEM) data and Geographical Information System (GIS) software are used to extract drainage networks and their watershed boundaries. These tools are complicated to use or produce more errors in the extraction of elevation and drainage networks when applied to flat areas. For removal of errors and to improve the accuracy in preparation of DEM and extraction of drainage network, Burada Kalava River Basin, Andhra Pradesh, India has been taken for application of accuracy improvement algorithms. An automatic generation of drainage network and watershed using digital elevation model results in positional errors due to variations in slope and topography. This study aimed to generate a catchment area and stream network that closely represent the natural stream network and the streams’ real positions. The step-by-step methodology using GRASS-interfaced Quantum GIS algorithms are given for pre-processing of DEM data to improve the positional accuracy before automatic extraction of the stream network and catchment area to resemble the real situation of the watershed. Secondly, efforts are made to analyze the DEM during automatic generation of the stream network and catchment area by assigning various area threshold values, including the application of pour point coordinates in improving the stream network and watershed characteristics. The results are verified and validated with the field information in order to improve the accuracy levels of DEM quality in generation of drainage network and catchment area.
提取排水管网和流域信息是研究流域特征（如形态分析）的先决条件，这为水文规划和建模提供了基础。先进的算法工具、航天飞机雷达地形任务（SRTM）数字高程模型（DEM）数据和地理信息系统（GIS）软件被用来提取排水网络及其流域边界。这些工具使用起来比较复杂，或者在应用于平坦地区时，在提取高程和排水网络时会产生更多误差。为了消除误差，提高 DEM 制作和排水管网提取的精度，印度安得拉邦的 Burada Kalava 河流域采用了精度改进算法。由于坡度和地形的变化，使用数字高程模型自动生成排水管网和流域会产生位置误差。本研究的目的是生成一个能紧密代表自然溪流网络和溪流实际位置的集水区和溪流网络。在自动提取溪流网络和集水区以反映流域的真实情况之前，给出了使用 GRASS 集成量子 GIS 算法对 DEM 数据进行预处理以提高定位精度的分步方法。其次，在自动生成溪流网络和集水区的过程中，通过分配不同的面积阈值对 DEM 进行分析，包括在改善溪流网络和流域特征时倾点坐标的应用。其结果与实地信息进行了验证和确认，以提高 DEM 质量在生成溪流网络和集水区时的精度水平。
{"title":"Application of accuracy improvement algorithms for extraction of topographic information and drainage network from DEM using GIS","authors":"Sunanda Nagabathula, Srinivasa Rao Yammani","doi":"10.12775/bgeo-2024-0003","DOIUrl":"https://doi.org/10.12775/bgeo-2024-0003","url":null,"abstract":"The extraction of drainage network and watershed information is prerequisite for the study of watershed characteristics like morphometric analysis, which provides a basis for hydrological planning and modeling. The advanced tools of algorithms, Shuttle Radar Topographic Mission (SRTM) Digital Elevation Model (DEM) data and Geographical Information System (GIS) software are used to extract drainage networks and their watershed boundaries. These tools are complicated to use or produce more errors in the extraction of elevation and drainage networks when applied to flat areas. For removal of errors and to improve the accuracy in preparation of DEM and extraction of drainage network, Burada Kalava River Basin, Andhra Pradesh, India has been taken for application of accuracy improvement algorithms. An automatic generation of drainage network and watershed using digital elevation model results in positional errors due to variations in slope and topography. This study aimed to generate a catchment area and stream network that closely represent the natural stream network and the streams’ real positions. The step-by-step methodology using GRASS-interfaced Quantum GIS algorithms are given for pre-processing of DEM data to improve the positional accuracy before automatic extraction of the stream network and catchment area to resemble the real situation of the watershed. Secondly, efforts are made to analyze the DEM during automatic generation of the stream network and catchment area by assigning various area threshold values, including the application of pour point coordinates in improving the stream network and watershed characteristics. The results are verified and validated with the field information in order to improve the accuracy levels of DEM quality in generation of drainage network and catchment area.","PeriodicalId":502626,"journal":{"name":"Bulletin of Geography. Physical Geography Series","volume":"47 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141269886","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 study covered eleven lakes located in northern Poland and Belarus, aiming to determine the degree and trends of surface water temperature changes for the years 1971–2020 and lake ice cover for the period of 1961–2020 under the influence of ongoing climate changes. The analysis focused on changes and trends in average monthly surface water temperatures (SWT), as well as changes in the onset and end, duration and maximum thickness of ice cover. The average annual surface water temperature increased in the lakes by an average of 0.044°C per year. The lake with the highest trend is Chervonoe, at with 0.066°C per year, while the lowest is 0.029°C per year in Lake Hańcza. The ice cover duration showed a decrease of 0.6 days per year, and there was a reduction in maximum ice thickness of 0.27 cm per year
{"title":"Thermal regimes of lakes in the southern and eastern part of the Baltic Sea catchment area during the period of climate change","authors":"R. Skowron, Tomasz Jaszczyk","doi":"10.12775/bgeo-2023-0008","DOIUrl":"https://doi.org/10.12775/bgeo-2023-0008","url":null,"abstract":" \u0000The study covered eleven lakes located in northern Poland and Belarus, aiming to determine the degree and trends of surface water temperature changes for the years 1971–2020 and lake ice cover for the period of 1961–2020 under the influence of ongoing climate changes. The analysis focused on changes and trends in average monthly surface water temperatures (SWT), as well as changes in the onset and end, duration and maximum thickness of ice cover. The average annual surface water temperature increased in the lakes by an average of 0.044°C per year. The lake with the highest trend is Chervonoe, at with 0.066°C per year, while the lowest is 0.029°C per year in Lake Hańcza. The ice cover duration showed a decrease of 0.6 days per year, and there was a reduction in maximum ice thickness of 0.27 cm per year\u0000 ","PeriodicalId":502626,"journal":{"name":"Bulletin of Geography. Physical Geography Series","volume":"102 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139391444","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 work analyses and evaluates the results of research work carried out so far in the field of rainwater management in urban areas in Poland. Using the "biblioshiny" tool, a bibliometric analysis was carried out based on queries to the Scopus and Web of Science databases. As a result, information was obtained on selected bibliometric statistics of scientific publications in which the topic of rainwater in Poland was taken up. The probable direction of further research development in the field of the analysed issues was also determined. In addition, after a detailed review of all the articles obtained at the earlier stage of the bibliometric analysis, the main research contexts were indicated and discussed. Areas and issues requiring further analysis and supplementation were indicated in the work.
该著作分析和评估了迄今为止在波兰城市地区雨水管理领域开展的研究工作的成果。在查询 Scopus 和 Web of Science 数据库的基础上，使用 "biblioshiny "工具进行了文献计量分析。结果，获得了以波兰雨水为主题的科学出版物的部分文献计量统计信息。还确定了在所分析问题领域进一步研究发展的可能方向。此外，在对文献计量分析前期阶段获得的所有文章进行详细审查后，指出并讨论了主要的研究背景。工作中还指出了需要进一步分析和补充的领域和问题。
{"title":"Rainwater management in urban areas in Poland: literature review","authors":"Adam Piasecki, Agnieszka Pilarska","doi":"10.12775/bgeo-2023-0006","DOIUrl":"https://doi.org/10.12775/bgeo-2023-0006","url":null,"abstract":"The work analyses and evaluates the results of research work carried out so far in the field of rainwater management in urban areas in Poland. Using the \"biblioshiny\" tool, a bibliometric analysis was carried out based on queries to the Scopus and Web of Science databases. As a result, information was obtained on selected bibliometric statistics of scientific publications in which the topic of rainwater in Poland was taken up. The probable direction of further research development in the field of the analysed issues was also determined. In addition, after a detailed review of all the articles obtained at the earlier stage of the bibliometric analysis, the main research contexts were indicated and discussed. Areas and issues requiring further analysis and supplementation were indicated in the work.","PeriodicalId":502626,"journal":{"name":"Bulletin of Geography. Physical Geography Series","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139182983","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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