Geographic Information System (GIS)

地理信息系统 (GIS)
  • 文章类型: Journal Article
    巴基斯坦北部地区包括Hindukush,喀喇昆仑,喜马拉雅山脉见证了冰川的汹涌,气候变暖加剧了。随着冰川迅速融化,峡谷经历了加剧的封锁和迁移,阻塞溪流排放并形成膨胀的冰坝湖泊。这些天然水坝的破裂引发了主要冰川峡谷下游的冰川湖爆发洪水。2022年巴基斯坦北部喀喇昆仑山脉的灾难性冰川湖爆发洪水促使了这项研究。它专注于Shishper冰川湖。目的是提供完整的洪水观测及其对下游社区的破坏性影响。对Landsat08图像的分析揭示了Shishper冰川湖从2018年11月开始到2022年5月灾难性的GLOF的演变。该湖在2019年的最大面积为0.32km2,2019年6月22日和2020年5月29日的连续破坏将其减少到0.018km2。排水一直持续到2021年7月,湖泊面积缩小到0.009平方公里。2022年值得注意的2.73°C温度上升与湖泊面积扩大到0.33km2相关,最终在5月7日的GLOF中达到顶峰。2022年。这项研究强调了制图的迫切需要,评估,并监测喀喇昆仑山脉中汹涌的冰川和冰川形成的湖泊,以保护下游社区免受潜在危害。
    The Northern Areas of Pakistan encompass the Hindukush, Karakoram, and Himalayan mountain ranges witnessing glacier surging, exacerbated by climate warming. As glaciers rapidly melt, ravines experience heightened blockage and migration, obstructing stream discharges and forming expansive ice-dammed lakes. The rupture of these natural dams triggers Glacial Lake Outburst Floods downstream in the primary glacier\'s ravine. The catastrophic Glacial Lake Outburst Floods in 2022 across the Karakoram ranges in Northern Pakistan prompted this study. It focuses on Shishper Glacier Lake. The aim is to provide complete flood observations and their devastating effects on downstream communities. Analysis of Landsat 08 Imagery reveals the evolution of Shishper Glacier Lake from its initiation in November 2018 to the catastrophic GLOF in May 2022. The lake reached a maximum area of 0.32 km2 in 2019 and its successive breaches on June 22, 2019, and May 29, 2020, reduced it to 0.018 km2. Draining continued until July 2021, shrinking the lake area to 0.009 km2. A noteworthy 2.73 °C temperature increase in 2022 correlated with an expansion of the lake area to 0.33 km2, culminating in the GLOF on May 7th, 2022. The study emphasizes the critical need for mapping, assessing, and monitoring surging glaciers and glacier-formed lakes in the Karakoram ranges to safeguard downstream communities from potential hazards.
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  • 文章类型: Editorial
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  • 文章类型: Journal Article
    需要建立安全,可访问,和包容性的步行路线被认为是欧盟的主要优先事项之一。我们开发了一种评估城市公共建筑周围环境中行人流动性的方法,以评估可达性和包容性水平,特别是对于行动不便的人。在评估的第一阶段,人工智能算法用于识别行人过路,并通过基于深度学习的物体检测与卫星或航空正射图像确定精确的地理位置。在第二阶段,地理信息系统技术用于创建网络模型。这种方法可以验证选定研究区域中轮椅使用者的可及性水平,并确定两个兴趣点之间最合适的轮椅过境路线。使用惯性传感器对获得的数据进行了验证,以证实路线的水平连续性。研究结果对这些路线的使用者有直接的好处,对于负责确保和维护行人路线的可达性的实体也很有价值。
    The need to establish safe, accessible, and inclusive pedestrian routes is considered one of the European Union\'s main priorities. We have developed a method of assessing pedestrian mobility in the surroundings of urban public buildings to evaluate the level of accessibility and inclusion, especially for people with reduced mobility. In the first stage of assessment, artificial intelligence algorithms were used to identify pedestrian crossings and the precise geographical location was determined by deep learning-based object detection with satellite or aerial orthoimagery. In the second stage, Geographic Information System techniques were used to create network models. This approach enabled the verification of the level of accessibility for wheelchair users in the selected study area and the identification of the most suitable route for wheelchair transit between two points of interest. The data obtained were verified using inertial sensors to corroborate the horizontal continuity of the routes. The study findings are of direct benefit to the users of these routes and are also valuable for the entities responsible for ensuring and maintaining the accessibility of pedestrian routes.
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  • 文章类型: Journal Article
    孟加拉国目睹了令人震惊的闪电频率上升,特别是在季风前和季风季节。在过去的十年中,这导致了每年因雷击而造成的大量死亡。认识到这场危机,该国于2016年正式宣布闪电伤亡为自然灾害。这项研究更深入地研究了孟加拉国的闪电死亡和因果关系。利用辅助数据源,这项研究通过整合孟加拉国气象部门(BMD)数据和来自国际空间站(ISS)近实时(NRT)任务的NASA闪电成像传感器(LIS)数据引入了一种独特的方法。该组合数据集允许更全面的分析。此外,地理信息系统(GIS)用于分析空间分布并生成地图。反距离加权(IDW)插值工具用于创建详细的闪电死亡空间分布图,雷暴日(TSDs),以及整个孟加拉国的闪电频率(LFF)。分析显示,农民和渔民是最脆弱的人群,东北地区的影响最大。希尔赫特分部成为死亡人数最多的地区,突出了东北地区的敏感性。该研究还确定季风是闪电伤亡最高的时期。通过结合创新的数据集成和空间分析,这项研究为孟加拉国闪电死亡的惊人趋势提供了有价值的见解。这些发现可以提供有针对性的预防策略和干预措施,以保护弱势群体和社区。
    Bangladesh has witnessed alarmingly rising lightning frequency, particularly during pre-monsoon and monsoon seasons. This has resulted in significant annual death tolls from lightning strikes over the past decade. Recognizing this crisis, the country officially declared lightning casualties a natural disaster in 2016. This study delves deeper into the landscape of lightning fatalities and causalities in Bangladesh. Utilizing secondary data sources, this research introduces a unique approach by integrating Bangladesh Meteorological Department (BMD) data and NASA\'s Lightning Imaging Sensor (LIS) data from the International Space Station\'s (ISS) Near-real Time (NRT) mission. This combined dataset allows for a more comprehensive analysis. Furthermore, Geographic Information Systems (GIS) was employed to analyze spatial distributions and generate maps. The Inverse Distance Weighted (IDW) interpolation tool was used to create detailed spatial distribution maps of lightning fatalities, thunderstorm days (TSDs), and lightning flash frequency (LFF) across Bangladesh. The analysis revealed that farmers and fishermen were the most vulnerable populations, with the northeastern regions experiencing the highest impact. Sylhet division emerged as the area with the most fatalities, highlighting the northeastern zone\'s susceptibility. The study also identified monsoons as the period with the highest occurrences of lightning deaths and injuries. By combining innovative data integration and spatial analysis, this study offers valuable insights into the alarming trend of lightning fatalities in Bangladesh. These findings can inform targeted prevention strategies and interventions to safeguard vulnerable populations and communities.
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  • 文章类型: Journal Article
    迁徙蝗虫,Locustamigratoria(L.),一种重要的蝗虫物种,以形成大群并对农作物和植被造成广泛破坏的能力而闻名,受到气候变化的影响。本文采用地理信息系统(GIS)和MaxEnt生态建模技术来评估气候变化对移民分布格局的影响。收集和分析发生数据和环境变量,以创建物种当前和未来分布的预测模型。这项研究强调了气候因素的关键作用,特别是温度和降水,在确定蝗虫的分布时。MaxEnt模型表现出高性能指标,准确预测偏头痛潜在的生境适宜性此外,特定的生物气候变量,如平均温度和年降水量,被确定为影响物种存在的重要因素。生成的未来地图表明该物种将如何入侵新地区,尤其是在欧洲。这些结果预测了这种破坏性物种对许多农业社区的风险,这是世界变暖的直接结果。该研究为蝗虫分布与环境因素之间的复杂关系提供了宝贵的见解,能够制定有效的蝗虫管理战略和预警系统,以减轻对农业和生态系统的影响。
    The migratory locust, Locustamigratoria (L.), a significant grasshopper species known for its ability to form large swarms and cause extensive damage to crops and vegetation, is subject to the influence of climate change. This research paper employs geographic information system (GIS) and MaxEnt ecological modelling techniques to assess the impact of climate change on the distribution patterns of L.migratoria. Occurrence data and environmental variables are collected and analysed to create predictive models for the current and future distribution of the species. The study highlights the crucial role of climate factors, particularly temperature and precipitation, in determining the locust\'s distribution. The MaxEnt models exhibit high-performance indicators, accurately predicting the potential habitat suitability of L.migratoria. Additionally, specific bioclimatic variables, such as mean temperature and annual precipitation, are identified as significant factors influencing the species\' presence. The generated future maps indicate how this species will invade new regions especially in Europe. Such results predict the risk of this destructive species for many agriculture communities as a direct result of a warming world. The research provides valuable insights into the complex relationship between locust distribution and environmental factors, enabling the development of effective strategies for locust management and early warning systems to mitigate the impact on agriculture and ecosystems.
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  • 文章类型: Journal Article
    在Irbid省,乔丹,公平的医疗机构分布对于确保医疗保健的可及性和改善公共卫生结果至关重要。这项研究调查了空间分布,可访问性,并使医疗设施符合卫生部的标准,以确定需要改进的领域。使用地理信息系统(GIS),进行了三个空间分析:最近邻分析,缓冲液分析,和服务区域分析。这些分析全面评估了医疗保健前景,揭示了医疗机构的随机空间分布格局;并表明缺乏结构化组织。缓冲液分析显示特定区域的浓度,而其他人则服务不足。服务区域分析揭示了重大的医疗保健挑战,尤其是在偏远地区。Irbid省的医疗保健资源分配达不到国家和国际标准,强调需要改进。为了解决这些差距,政策制定者和医疗当局应该把重点放在公平地重新分配资源上,根据当地需要调整分配,改善偏远地区基础设施,完善政府政策。为了确保与国际标准保持一致并实现医疗保健公平,必须进行持续的监测和评估。本案例研究的见解为面临类似医疗保健分布挑战的地区提供了宝贵的指导。
    In the Irbid Governorate, Jordan, equitable healthcare facility distribution is vital to ensuring healthcare accessibility and improving public health outcomes. This study investigated the spatial distribution, accessibility, and conformity of healthcare facilities to the Ministry of Health standards to identify areas requiring improvement. Using geographic information systems (GIS), three spatial analyses were conducted: nearest neighbor analysis, buffer analysis, and service area analysis. These analyses comprehensively assessed the healthcare landscape, revealing a random spatial distribution pattern of healthcare facilities; and indicating an absence of structured organization. The buffer analysis revealed concentrations in specific regions, while others were underserved. The Service Area Analysis revealed significant healthcare access challenges, especially in remote areas. The healthcare resource distribution of the Irbid governorate fell short of national and international standards, emphasizing the need for improvements. To address these disparities, policymakers and healthcare authorities should focus on equitably redistributing resources, tailoring allocation to local needs, improving remote area infrastructure, and refining government policies. Continuous monitoring and evaluation are imperative to ensure alignment with international standards and achieve healthcare equity. The insights from this case study provide valuable guidance for regions facing similar healthcare distribution challenges.
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  • 文章类型: Journal Article
    在过去的十年里,社区复原力的概念,其中包括规划,反对,吸收,并迅速从破坏性事件中恢复过来,在世界各地获得了势头。关键基础设施(CI)被视为在当今人口稠密的国家取得成功的关键。这些基础设施必须通过实施适当的灾害管理和恢复计划,在面对多灾害灾难时保持稳健。鉴于这些事实,至关重要的是,建立一个新的方法论视角,建立一个有效的CI灾害管理系统,以及一个智能应用程序,将有助于建设更具弹性和可持续的城市和社区。这种观点提出了一个整体的游戏场景应用程序,用于评估多危险事件期间关键基础设施的脆弱性和可访问性,主要侧重于对关键基础设施及其资产进行综合评估。主要是,该观点包括一个整体游戏场景应用程序,该应用程序将有助于准确量化地理空间信息,并使用虚拟现实将大数据集成到预测性和说明性管理工具中。•开展综合评估模型,以评估关键基础设施的脆弱性。•在多危害事件期间引入数字技术,以改进自然灾害评估模型。•开发一个开放世界的游戏场景,被认为具有高视觉运动图片和场景。
    Over the last decade, the notion of community resilience, which encompasses planning for, opposing, absorbing, and quickly recovering from disruptive occurrences, has gained momentum across the world. Critical Infrastructures (CI) are seen as critical to attaining success in today\'s densely populated countries. Such infrastructures must be robust in the face of multi-hazard catastrophes by implementing appropriate disaster management and recovery plans. Given these facts, it is critical to establish a new methodological perspective with an integrated system for effective disaster management of CI, as well as an intelligent application that will aid in the construction of more resilient and sustainable cities and communities. This perspective proposes a holistic gaming scenario application for assessing the vulnerability and accessibility of critical infrastructures during multi-hazard events, with a primary focus on conducting an integrated assessment for critical infrastructures and their assets. Mainly, the perspective includes a holistic gaming scenario application that will aid in accurately quantifying geographical spatial information and integrating big data into predictive and prescriptive management tools using virtual reality.•Conducting Integrated Assessment Models for evaluating vulnerability of Critical Infrastructures.•Inducing Digital Technologies during Multi-Hazard Incidents for improving Natural hazard assessment models.•Developing an open-world gaming scenario that is considered with high visual motion pictures and scenes.
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  • 文章类型: Journal Article
    3-30-300规则为城市提供了促进公平自然准入的基准。它规定个人应该从他们的住所中看到三棵树,他们附近有30%的树冠,并居住在高质量绿地的300米范围内。实施这一点需要彻底的测量,监测,和评估方法,然而,目前很少有指导来采取这些行动。为了克服这个差距,我们采用了以专家为基础的共识方法来审查测量3-30-300的可用方法以及每种测量的优缺点。我们描述了七个相关的数据和过程:植被指数,街道层面的分析,树库存,问卷,窗口视图分析,土地覆盖图,和绿色空间地图。根据审查的每一项措施的优缺点,我们提出了一个适用性矩阵,将推荐的措施与规则的每个组成部分联系起来。这些建议包括对\'3组件\'的调查和窗口视图分析,“30分量”的高分辨率土地覆盖图,和绿色空间地图,带有“300组件”的网络分析。这些方法,响应当地情况和资源,不仅执行3-30-300规则,而且促进就当地愿望和要求进行更广泛的对话。因此,这些技术可以指导对城市绿化健康的战略投资,股本,生物多样性,和气候适应。
    The 3-30-300 rule offers benchmarks for cities to promote equitable nature access. It dictates that individuals should see three trees from their dwelling, have 30 % tree canopy in their neighborhood, and live within 300 m of a high-quality green space. Implementing this demands thorough measurement, monitoring, and evaluation methods, yet little guidance is currently available to pursue these actions. To overcome this gap, we employed an expert-based consensus approach to review the available ways to measure 3-30-300 as well as each measure\'s strengths and weaknesses. We described seven relevant data and processes: vegetation indices, street level analyses, tree inventories, questionnaires, window view analyses, land cover maps, and green space maps. Based on the reviewed strengths and weaknesses of each measure, we presented a suitability matrix to link recommended measures with each component of the rule. These recommendations included surveys and window-view analyses for the \'3 component\', high-resolution land cover maps for the \'30 component\', and green space maps with network analyses for the \'300 component\'. These methods, responsive to local situations and resources, not only implement the 3-30-300 rule but foster broader dialogue on local desires and requirements. Consequently, these techniques can guide strategic investments in urban greening for health, equity, biodiversity, and climate adaptation.
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  • 文章类型: Journal Article
    先前的研究表明,生物体对持续的气候危机的频繁反应是调整其繁殖时间或繁殖物候。水鸟可能特别容易受到气温上升和降水的影响,因为许多人是迁徙的,依赖沿海栖息地进行越冬和繁殖。由于气候变化,这些特殊的栖息地可能处于危险之中,筑巢时间通常取决于食物的供应,这通常直接受温度的影响。我们调查了随着温度和降水的增加,美国三种shorebird物种的离合器起始日期(CID)是否随着时间的推移而变早。我们使用了康奈尔NestWatch计划的巢穴记录以及国家海洋和大气管理局的各种博物馆数据库和气象站数据。我们发现证据表明CIDs随着时间的推移变得更早,尽管这只是一个物种的重要因素。虽然我们研究区域的温度随着时间的推移显著增加,降水变化的变化更大,并不总是显着预测的时间。我们发现有证据表明,一种物种可能通过更早的筑巢来响应温度升高,但是没有支持我们的假设,即CID由于任何物种的降水变化而发生变化。每个物种的结果各不相同,这表明对水鸟进行进一步研究的重要性,因为气候变化对其筑巢物候的影响可能尚未完全实现,并且可能取决于物种的生物学和分布。
    Previous research suggests that a frequent response of organisms to the ongoing climate crisis is the adjustment of their reproductive timing or breeding phenology. Shorebirds may be especially vulnerable to increasing temperatures and precipitation, as many are migratory and depend on coastal habitats for wintering and breeding. These particular habitats could be at risk due to changes in climate, and nesting times often depend on food availability, which is often directly influenced by temperature. We investigated if clutch initiation dates (CID) for three shorebird species in the United States have become earlier over time with increasing temperatures and precipitation. We used nest records from Cornell\'s NestWatch program and various museum databases and weather station data from the National Oceanic and Atmospheric Administration. We found evidence that CIDs have become earlier over time, though this was only a significant factor for one species. While temperature in our study areas has increased significantly over time, precipitation changes were more variable and not always significantly predicted by time. We found evidence that one species may be responding to increasing temperatures by nesting earlier, but there was no support for our hypothesis that CID has changed due to changes in precipitation for any species. Results varied for each species, indicating the importance of further studies on shorebirds as the effects of climate change on their nesting phenology may not be fully realized and will likely depend on the species\' biology and distribution.
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  • 文章类型: Journal Article
    本文介绍了地理空间数据集,数字,和表格说明i)养殖中的养鱼场的位置和总面积;ii)根据Sharma等人发表的研究得出的匈牙利鱼塘芦苇覆盖的时空动态。,[1].养鱼场位置的初步数据是从农业经济研究所(AKI)获得的,其次是基于高分辨率GoogleEarthPro图像的显着改进。鱼塘面积数据集与水产养殖年度统计报告中报告的值进行了验证。为了绘制芦苇植被免费地图,从哥白尼开放访问中心[2]访问了Sentinel-2图像(2017年至2021年之间),并使用基于NDVI的阈值对紧急大型植物覆盖进行了分类[1]。科学家,政策制定者,养鱼户都可以从这样的地理空间数据集中受益。它可用于监测匈牙利鱼塘的范围,并设计农场级芦苇管理计划,以优化生态和生产服务的提供。
    This paper presents geospatial datasets, figures, and tables illustrating i) the location and total area of fish farms under cultivation; and ii) the spatiotemporal dynamics of reed cover in Hungarian fishponds generated from the published study of Sharma et al., [1]. Preliminary data for fish farm locations were obtained from the Institute of Agricultural Economics (AKI), followed by significant refinement based on high-resolution Google Earth Pro-imagery. The fishpond area dataset was validated against the values reported in annual statistical reports on aquaculture. In order to map reed vegetation freely available Sentinel-2 imagery (between 2017 and 2021) was accessed from the Copernicus Open Access Hub [2] and emergent macrophyte cover was classified using the NDVI-based threshold values [1]. Scientists, policymakers, and fish farmers can all benefit from such geospatial datasets. It could be used to monitor the extent of fishponds in Hungary and to design farm-level reed management plans to optimize the provision of ecological and production services.
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