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Generative Adversarial Approach to Urban Areas’ NDVI Estimation: A Case Study of Łódź, Poland 城市地区NDVI估算的生成对抗方法:以波兰Łódź为例
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2023-01-29 DOI: 10.14746/quageo-2023-0007
Maciej Adamiak, K. Będkowski, Adam Bielecki
Abstract Generative adversarial networks (GAN) opened new possibilities for image processing and analysis. Inpainting, dataset augmentation using artificial samples, or increasing spatial resolution of aerial imagery are only a few notable examples of utilising GANs in remote sensing (RS). The normalised difference vegetation index (NDVI) ground-truth labels were prepared by combining RGB and NIR orthophotos. The dataset was then utilised as input for a conditional generative adversarial network (cGAN) to perform an image-to-image translation. The main goal of the neural network was to generate an artificial NDVI image for each processed 256 px × 256 px patch using only information available in the panchromatic input. The network achieved a structural similarity index measure (SSIM) of 0.7569 ± 0.1083, a peak signal-to-noise ratio (PSNR) of 26.6459 ± 3.6577 and a root-mean-square error (RSME) of 0.0504 ± 0.0193 on the test set, which should be considered high. The perceptual evaluation was performed to verify the method's usability when working with a real-life scenario. The research confirms that the structure and texture of the panchromatic aerial RS image contain sufficient information for NDVI estimation for various objects of urban space. Even though these results can highlight areas rich in vegetation and distinguish them from the urban background, there is still room for improvement regarding the accuracy of the estimated values. The research aims to explore the possibility of utilising GAN to enhance panchromatic images (PAN) with information related to vegetation. This opens exciting opportunities for historical RS imagery processing and analysis.
生成对抗网络(GAN)为图像处理和分析开辟了新的可能性。在遥感(RS)中使用gan的几个值得注意的例子是,使用人工样本进行图像绘制、数据集增强或提高航空图像的空间分辨率。结合RGB和NIR正射影像制备归一化植被指数(NDVI)地面真值标签。然后将数据集用作条件生成对抗网络(cGAN)的输入,以执行图像到图像的翻译。神经网络的主要目标是仅使用全色输入中可用的信息,为每个处理过的256像素× 256像素补丁生成人工NDVI图像。该网络在测试集上的结构相似指数(SSIM)为0.7569±0.1083,峰值信噪比(PSNR)为26.6459±3.6577,均方根误差(RSME)为0.0504±0.0193,属于较高水平。进行感知评估以验证该方法在实际场景中的可用性。研究证实了全色航空RS图像的结构和纹理包含了对城市空间各种目标进行NDVI估计的足够信息。尽管这些结果可以突出植被丰富的地区,并将其与城市背景区分开来,但在估计值的准确性方面仍有改进的余地。该研究旨在探索利用GAN增强与植被相关信息的全色图像(PAN)的可能性。这为历史RS图像处理和分析提供了令人兴奋的机会。
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引用次数: 0
The Analysis of Fire Hotspot Distribution in Kalimantan and Its Relationship with ENSO Phases 加里曼丹地区火灾热点分布及其与ENSO相位的关系分析
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2023-01-18 DOI: 10.14746/quageo-2023-0006
R. A. Zahra, E. Nurjani, A. B. Sekaranom
Abstract Kalimantan experiences fire hazards almost every year, which threaten the largest tropical forest in Southeast Asia. Climatic conditions, such as increasing surface temperature and decreasing rainfall, become important especially when El Nino Southern Oscillation (ENSO) occurs. Studies on fire are commonly conducted based on the climatic condition such as the dry or wet season, but those which focused on analysis of fire occurrences with the specific ENSO phases are still limited. This study aims to identify the spatial and temporal distribution of rainfall, land surface temperature, and soil moisture and analyses the distribution of hotspots in Kalimantan from 2014 to 2020 during different ENSO phases. The data used are Moderate Resolution Imaging Spectroradiometer (MODIS) for hotspot analysis, Global Precipitation Measurement (GPM) for rainfall analysis, MODIS Land Surface Temperature (LST) for surface temperature analysis and Soil Moisture Active Passive (SMAP) for soil moisture analysis. The methods used were descriptive and spatial analyses based on each ENSO phase, which were then combined to analyse the temporal and spatial distribution of fire, rainfall, LST and soil moisture. The temporal distribution shows a positive relationship between ENSO, rainfall, LST, soil moisture and hotspots with a confidence level of 90% in the dry months of August–October. Fire occurred in most parts of West and Central Kalimantan, associated with low elevation, organic soil types and agricultural peatland. The average trend of increasing hotspots is 17.4% in the El Nino phase and decreasing hotspots by 84.7% in the La Nina phase during August–October in Kalimantan.
加里曼丹几乎每年都会发生火灾,威胁着东南亚最大的热带森林。气候条件,如地表温度升高和降雨量减少,变得非常重要,尤其是当厄尔尼诺南方涛动(ENSO)发生时。对火灾的研究通常基于气候条件,如旱季或雨季,但那些专注于分析特定ENSO阶段的火灾发生的研究仍然有限。本研究旨在确定降雨量、地表温度和土壤湿度的时空分布,并分析2014年至2020年加里曼丹不同ENSO阶段的热点分布。使用的数据包括用于热点分析的中分辨率成像光谱仪(MODIS)、用于降雨量分析的全球降水量测量(GPM)、用于地表温度分析的MODIS地表温度(LST)和用于土壤水分分析的土壤水分主动-被动(SMAP)。所使用的方法是基于每个ENSO阶段的描述性和空间分析,然后将其结合起来分析火灾、降雨、LST和土壤湿度的时间和空间分布。在8月至10月的干旱月份,ENSO、降雨量、LST、土壤湿度和热点之间的时间分布呈正相关,置信水平为90%。火灾发生在加里曼丹西部和中部的大部分地区,与低海拔、有机土壤类型和农业泥炭地有关。加里曼丹8月至10月期间,厄尔尼诺阶段热点增加的平均趋势为17.4%,拉尼娜阶段热点减少的趋势为84.7%。
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引用次数: 0
Patterns in the Multiannual Course of Growing Season in Central Europe Since the End of the 19th Century 19世纪末以来中欧多年生长季节的模式
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-25 DOI: 10.14746/quageo-2023-0005
K. Szyga-Pluta, A. Tomczyk, K. Piotrowicz, E. Bednorz
Abstract The research identified patterns in the multiannual course of start and end dates, and length of growing season (GS) in Central Europe since the end of the 19th century in selected cities of Central Europe in the period 1893–2020. GS start in the analysed stations was characterised by high year-to-year variability, particularly in those located more southwards, i.e. in Prague and Vienna. A smaller variability occurred in GS end dates. The GS was subject to prolongation, although these changes in particular cities were uneven and had different causes. In Toruń and Potsdam, its increase was caused by a greater shift of the end date, and in the remaining stations, it was determined by its earlier start date. Two subperiods were distinguished that differ in terms of intensity of changes of the start and end dates, as well as the length of the GS. The intensification was observed recently.
摘要:本研究以1893-2020年中欧城市为研究对象,分析了19世纪末以来中欧地区植物生长季长度、开始日期和结束日期的多年变化规律。所分析的监测站的GS开始具有年际变化大的特点,特别是位于较南的监测站,即布拉格和维也纳。GS结束日期的变异性较小。GS可能会延长,尽管这些变化在特定城市是不平衡的,有不同的原因。在托卢奇和波茨坦,它的增加是由于结束日期的较大变化,而在其余的站点,它是由较早的开始日期决定的。在开始和结束日期的变化强度以及GS的长度方面,可以区分出两个不同的亚期。最近观察到这种强化。
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引用次数: 1
The Increase in the Proportion of Impervious Surfaces and Changes in Air Temperature, Relative Humidity and Cloud Cover in Poland 波兰不透水地表比例的增加以及空气温度、相对湿度和云量的变化
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-25 DOI: 10.2478/quageo-2023-0003
K. Bartoszek, Wojciech Łachowski, Dorota Matuszko
Abstract The aim of the study is to characterise the changes in the proportion of impervious surfaces (ISs) in Poland and their impact on changes in temperature, air humidity, and cloud cover. The results of satellite image classification from 1990, 2000, 2010 and 2020, as well as meteorological data from the period 1981–2020 for the warm half of the year, were used. An analysis was performed making it possible to compare the changes in the proportion of ISs in 3 decades, i.e. 1991–2000, 2001–2010 and 2011–2020. In Poland, in the years 1991–2020, the total area of ISs increased by approximately 30%. At the same time, statistically significant positive trends in maximum temperature are visible throughout Poland, ranging from 0.48°C per 10 years to >0.90°C per 10 years. Trends in the magnitude of low-level cloud cover are negative throughout Poland and range from −2.7% to −2.3% per 10 years. The frequency of stratiform clouds is decreasing, while that of mid-level Cirrus and Cumulus clouds is increasing. The results show a relationship between the increase in ISs in Polish cities and changes in meteorological elements in their area and in the immediate vicinity, which were most pronounced in the first decade of the 21st century.
摘要本研究的目的是描述波兰不透水表面比例的变化及其对温度、空气湿度和云量变化的影响。使用了1990年、2000年、2010年和2020年的卫星图像分类结果,以及1981年至2020年温暖半年的气象数据。进行了一项分析,可以比较30年来,即1991-2000年、2001-2010年和2011-2020年,IS比例的变化。在波兰,1991-2020年,IS的总面积增加了约30%。与此同时,波兰各地的最高气温呈现出统计上显著的积极趋势,从每10年0.48°C到每10年>0.90°C不等。波兰各地低层云量的趋势是负的,每10年变化率为-2.7%至-2.3%。层云的频率在下降,而中层卷云和积云的频率则在增加。结果显示,波兰城市IS的增加与该地区及其附近地区气象要素的变化之间存在关系,这在21世纪的前十年最为明显。
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引用次数: 0
Impacts of Land Use Change on Landscape Structure and Ecosystem Services at Local Scale: A Case Study in Central Portugal 土地利用变化对景观结构和生态系统服务的影响:以葡萄牙中部地区为例
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-25 DOI: 10.14746/quageo-2023-0004
A. Nunes, Alexandre Ornelas, Pedro Vieira, Ângela Dias, B. Martins
Abstract This study aims to evaluate land use and land cover (LULC) changes and associated impacts in the landscape structure and ecosystem services (ES) value in Lousã municipality, in Central Portugal. The results show that significant changes in LULC were recorded over the study period (1974–2018). Agricultural abandonment, expansion of woodland due to the promotion of the eucalyptus (EU) monoculture (chiefly Eucalyptus globulus), the invasion of exotic species (mainly Acacia dealbata) and the increase of built-up areas are the most significant changes that have shaped the landscapes of the study area. The analysis also revealed that the mean patch size has decreased whereas the number of patches increased. The results showed that although the EU and deciduous forest (DF) increased the ES value, the overall total ES value fell around 10% between 1974 and 2018, mainly due to the decrease in the supply of agricultural goods. Studies of this kind on local rural landscapes are vital when it comes to devising appropriate land management policies for the landscape level by considering the interaction between each element for sustainable development.
摘要本研究旨在评估葡萄牙中部卢昂市的土地利用和土地覆盖(LULC)变化及其对景观结构和生态系统服务(ES)价值的相关影响。结果显示,在研究期间(1974年至2018年),LULC发生了显著变化。农业废弃、桉树(欧盟)单一栽培(主要是蓝桉)的推广导致的林地扩张、外来物种(主要是金合欢)的入侵以及建成区的增加是塑造研究区景观的最显著变化。分析还显示,平均补丁大小有所减少,而补丁数量有所增加。结果显示,尽管欧盟和落叶林(DF)增加了ES值,但1974年至2018年间,总ES值下降了约10%,主要是由于农产品供应减少。当考虑到可持续发展的每个要素之间的相互作用,为景观层面制定适当的土地管理政策时,对当地农村景观的此类研究至关重要。
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引用次数: 0
Patterns in the Multiannual Course of Growing Season in Central Europe Since the End of the 19th Century 19世纪末以来中欧多年生长季节的模式
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-25 DOI: 10.2478/quageo-2023-0005
K. Szyga-Pluta, A. Tomczyk, K. Piotrowicz, E. Bednorz
Abstract The research identified patterns in the multiannual course of start and end dates, and length of growing season (GS) in Central Europe since the end of the 19th century in selected cities of Central Europe in the period 1893–2020. GS start in the analysed stations was characterised by high year-to-year variability, particularly in those located more southwards, i.e. in Prague and Vienna. A smaller variability occurred in GS end dates. The GS was subject to prolongation, although these changes in particular cities were uneven and had different causes. In Toruń and Potsdam, its increase was caused by a greater shift of the end date, and in the remaining stations, it was determined by its earlier start date. Two subperiods were distinguished that differ in terms of intensity of changes of the start and end dates, as well as the length of the GS. The intensification was observed recently.
摘要:本研究以1893-2020年中欧城市为研究对象,分析了19世纪末以来中欧地区植物生长季长度、开始日期和结束日期的多年变化规律。所分析的监测站的GS开始具有年际变化大的特点,特别是位于较南的监测站,即布拉格和维也纳。GS结束日期的变异性较小。GS可能会延长,尽管这些变化在特定城市是不平衡的,有不同的原因。在托卢奇和波茨坦,它的增加是由于结束日期的较大变化,而在其余的站点,它是由较早的开始日期决定的。在开始和结束日期的变化强度以及GS的长度方面,可以区分出两个不同的亚期。最近观察到这种强化。
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引用次数: 1
Impacts of Land Use Change on Landscape Structure and Ecosystem Services at Local Scale: A Case Study in Central Portugal 土地利用变化对当地景观结构和生态系统服务的影响——以葡萄牙中部为例
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-25 DOI: 10.2478/quageo-2023-0004
A. Nunes, Alexandre Ornelas, Pedro Vieira, Ângela Dias, B. Martins
Abstract This study aims to evaluate land use and land cover (LULC) changes and associated impacts in the landscape structure and ecosystem services (ES) value in Lousã municipality, in Central Portugal. The results show that significant changes in LULC were recorded over the study period (1974–2018). Agricultural abandonment, expansion of woodland due to the promotion of the eucalyptus (EU) monoculture (chiefly Eucalyptus globulus), the invasion of exotic species (mainly Acacia dealbata) and the increase of built-up areas are the most significant changes that have shaped the landscapes of the study area. The analysis also revealed that the mean patch size has decreased whereas the number of patches increased. The results showed that although the EU and deciduous forest (DF) increased the ES value, the overall total ES value fell around 10% between 1974 and 2018, mainly due to the decrease in the supply of agricultural goods. Studies of this kind on local rural landscapes are vital when it comes to devising appropriate land management policies for the landscape level by considering the interaction between each element for sustainable development.
摘要本研究旨在评估葡萄牙中部卢昂市的土地利用和土地覆盖(LULC)变化及其对景观结构和生态系统服务(ES)价值的相关影响。结果显示,在研究期间(1974年至2018年),LULC发生了显著变化。农业废弃、桉树(欧盟)单一栽培(主要是蓝桉)的推广导致的林地扩张、外来物种(主要是金合欢)的入侵以及建成区的增加是塑造研究区景观的最显著变化。分析还显示,平均补丁大小有所减少,而补丁数量有所增加。结果显示,尽管欧盟和落叶林(DF)增加了ES值,但1974年至2018年间,总ES值下降了约10%,主要是由于农产品供应减少。当考虑到可持续发展的每个要素之间的相互作用,为景观层面制定适当的土地管理政策时,对当地农村景观的此类研究至关重要。
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引用次数: 0
The Increase in the Proportion of Impervious Surfaces and Changes in Air Temperature, Relative Humidity and Cloud Cover in Poland 波兰不透水地表比例的增加以及空气温度、相对湿度和云量的变化
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-25 DOI: 10.14746/quageo-2023-0003
K. Bartoszek, Wojciech Łachowski, Dorota Matuszko
Abstract The aim of the study is to characterise the changes in the proportion of impervious surfaces (ISs) in Poland and their impact on changes in temperature, air humidity, and cloud cover. The results of satellite image classification from 1990, 2000, 2010 and 2020, as well as meteorological data from the period 1981–2020 for the warm half of the year, were used. An analysis was performed making it possible to compare the changes in the proportion of ISs in 3 decades, i.e. 1991–2000, 2001–2010 and 2011–2020. In Poland, in the years 1991–2020, the total area of ISs increased by approximately 30%. At the same time, statistically significant positive trends in maximum temperature are visible throughout Poland, ranging from 0.48°C per 10 years to >0.90°C per 10 years. Trends in the magnitude of low-level cloud cover are negative throughout Poland and range from −2.7% to −2.3% per 10 years. The frequency of stratiform clouds is decreasing, while that of mid-level Cirrus and Cumulus clouds is increasing. The results show a relationship between the increase in ISs in Polish cities and changes in meteorological elements in their area and in the immediate vicinity, which were most pronounced in the first decade of the 21st century.
摘要:该研究的目的是表征波兰不透水表面(ISs)比例的变化及其对温度、空气湿度和云量变化的影响。利用1990年、2000年、2010年和2020年的卫星图像分类结果,以及1981-2020年暖半年的气象数据。通过分析,可以比较1991-2000年、2001-2010年和2011-2020年这30年国际空间站比例的变化。在波兰,1991-2020年间,国际空间站的总面积增加了大约30%。与此同时,波兰各地的最高气温在统计上显著上升,从每10年0.48°C到每10年0.90°C不等。整个波兰的低层云量趋势为负,每10年为- 2.7%至- 2.3%。层状云的出现频率呈减少趋势,中层卷云和积云的出现频率呈增加趋势。结果表明,波兰城市国际空间站的增加与其所在地区及其邻近地区气象要素的变化之间存在一定的关系,这种关系在21世纪头十年最为明显。
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引用次数: 1
Environmental Social Science and Urban Environment Management: A Review of Pathways Linking Policies and Planning to Citizens Living by the River 环境社会科学与城市环境管理:政策和规划与河边居民联系的路径综述
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-01 DOI: 10.14746/quageo-2022-0043
H. Mousazadeh
Abstract Urban environment management (UEM) and environmental social science (ESS) are two interconnected approaches that show significant potential for creating more sustainable and liveable cities. Their research has, however, been mainly disjointed, which may be because planning and policy have placed more emphasis on UEM than ESS at the same time. This research examined ESS in terms of the quality of life (QOL) criteria and sense of place (SOP) of citizens living by the river with the UEM intervention in the form of policies and programmes. The effects of fieldwork in the form of specialised and spatial interviews are presented in this research, which is usually ignored in the literature review of this type of analysis. The study aims to fill the current gap in this field in three European capitals by providing a reflective methodological account of fieldwork and the ‘elite interviewing’ approach. This paper produces a distinct form of the localisation of the research and sampling techniques and is as new, interactive and developing as possible. The results of the present study are underpinned by the conceptual model of research, which supports the main aim of this analysis and tries to examine the components of research in a new perspective. The findings highlighted that maintaining and strengthening ESS for citizens living next to rivers require innovative UEM, which uses urban creativity in the field of goals, urban settlements, strategies and management solutions to provide the base for increasing the liveability of the city and improving the quality of urban life.
摘要城市环境管理(UEM)和环境社会科学(ESS)是两种相互关联的方法,在创建更可持续、更宜居的城市方面显示出巨大的潜力。然而,他们的研究主要是脱节的,这可能是因为规划和政策同时比ESS更重视UEM。本研究通过UEM以政策和计划的形式进行干预,从生活质量(QOL)标准和河边公民的地方感(SOP)方面检查了ESS。本研究以专业访谈和空间访谈的形式介绍了实地调查的效果,但在这类分析的文献综述中通常忽略了这一点。该研究旨在通过对实地调查和“精英访谈”方法进行反思性的方法论描述,填补欧洲三个国家首都目前在这一领域的空白。这篇论文产生了一种独特的研究和采样技术的本地化形式,并且是尽可能新的、互动的和发展的。本研究的结果以研究的概念模型为基础,该模型支持本分析的主要目的,并试图从新的角度审视研究的组成部分。研究结果强调,为生活在河流旁的公民维护和加强ESS需要创新的UEM,它利用目标、城市住区、战略和管理解决方案领域的城市创造力,为提高城市宜居性和提高城市生活质量奠定基础。
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引用次数: 1
Sources of Mapping used in Humanitarian Emergencies: The Case of Ebola 人道主义紧急情况下使用的地图来源:埃博拉病例
IF 1 Q3 Earth and Planetary Sciences Pub Date : 2022-12-01 DOI: 10.14746/quageo-2022-0035
José Antonio Barra Martínez, F. Morales-Yago, M. de Lázaro-Torres
Abstract The need to rapidly respond to health emergencies has generated various institutional initiatives to identify their location, through mapping. This study employs a qualitative-exploratory method, based on the daily monitoring of eight Ebola epidemics between 2013 and 2021, to make an assessment of the usefulness of maps created specifically for Ebola. The results show that at least 14 organisations produce maps in the face of emergencies and epidemics such as Ebola. Consequently, it has been possible to design a search plan to aid in the monitoring of emergencies and to design an Ebola map with data obtained from these organisations and the initiatives they promote, which confirms the usefulness of these data sources and maps.
摘要快速应对突发卫生事件的需要产生了各种机构举措,通过测绘来确定其位置。这项研究采用了一种定性探索方法,基于2013年至2021年间对八种埃博拉疫情的日常监测,对专门为埃博拉绘制的地图的有用性进行评估。结果显示,至少有14个组织在面对埃博拉等紧急情况和流行病时绘制地图。因此,可以设计一个搜索计划来帮助监测紧急情况,并使用从这些组织及其倡导的举措获得的数据设计埃博拉地图,这证实了这些数据来源和地图的有用性。
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引用次数: 0
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Quaestiones Geographicae
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