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Evaluation of Digital Elevation Models Derived from Multi-Date Satellite Stereo Imagery for Urban Areas 城市多日期卫星立体影像数字高程模型评价

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_01_s60

Tobias Kugler, L. Wendt

引用次数: 0

Using Open-Source Data and Software to Analyse Land-Use Changes and Deforestation in Marqués de Comillas, Chiapa, Mexico (Work in Progress) 利用开源数据和软件分析墨西哥恰帕马库姆萨斯科米亚斯土地利用变化和森林砍伐(工作进行中)

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_01_s150

Iskar Jasmani Waluyo Moreno, J. G. Hernández, Agustín Bolóm Gómez, Julio Cesar García Sampayo

引用次数: 0

Modelling Climate–Sensitive Forest Succession to Assess Impacts of Climate Change and Support Decision Making 模拟气候敏感森林演替以评估气候变化影响并支持决策

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s65

Alois Simon

{"title":"Modelling Climate–Sensitive Forest Succession to Assess Impacts of Climate Change and Support Decision Making","authors":"Alois Simon","doi":"10.1553/giscience2021_02_s65","DOIUrl":"https://doi.org/10.1553/giscience2021_02_s65","url":null,"abstract":"Mountain forests provide a wide variety of ecosystem services to society. In light of the trend of temperature increase and related climatic extremes in the Greater Alpine Area, mountain forests are likely to undergo dramatic changes in the coming centuries. Therefore, forest managers face the challenge of adapting forests to support resilience to climate change. To facilitate this process, the forest gap model ForClim, a process-based forest succession model, was applied to generate site-specific information on future forest stand development and species composition. The tree species composition without management activities was predicted up to 2100 assuming a stable climate, and for both moderate and severe climate-change scenarios. Furthermore, three different forest stand development scenarios were implemented. The forest stand investigated in our research shows significant climate-sensitivity. Results demonstrate that deciduous mixed forest stands are necessary to increase resilience and manage forests for climate change. Using active silvicultural measures, such as assisted migration through planting thermophilus species, negative effects of climate change could be reduced. The modelling approach presented here is appropriate for assessing the impacts of climate change and supporting decision making by local forest managers.","PeriodicalId":29645,"journal":{"name":"GI_Forum","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85682091","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

Multidimensional Exploratory Spatial Data Analysis 多维探索性空间数据分析

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s136

Oliver Hennhöfer, Julian Bruns, P. Ullrich, A. Heiß, Galibjon M. Sharipov, D. Paraforos

引用次数: 0

Design of an Experiment to Evaluate Modes of Value Generalization in Animated Choropleth Maps 动画地形图中价值概化模式的实验设计

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s174

Christoph Traun, G. Wallentin, M. Schreyer

引用次数: 0

A Methodology for Implementing a Digital Twin of the Earth’s Forests to Match the Requirements of Different User Groups 实现地球森林数字孪生以满足不同用户群体需求的方法

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_01_s130

M. Mõttus, M. Dees, H. Astola, S. Dałek, Eelis Halme, T. Häme, Monika Krzyżanowska, A. Mäkelä, G. Marin, F. Minunno, Gero Pawlowski, Juho Penttilä, J. Rasinmäki

{"title":"A Methodology for Implementing a Digital Twin of the Earth’s Forests to Match the Requirements of Different User Groups","authors":"M. Mõttus, M. Dees, H. Astola, S. Dałek, Eelis Halme, T. Häme, Monika Krzyżanowska, A. Mäkelä, G. Marin, F. Minunno, Gero Pawlowski, Juho Penttilä, J. Rasinmäki","doi":"10.1553/giscience2021_01_s130","DOIUrl":"https://doi.org/10.1553/giscience2021_01_s130","url":null,"abstract":"Europe has acknowledged the need to develop a very high precision digital model of the Earth, a Digital Twin Earth, running on cloud infrastructure to bring data and end-users closer together. We present results of an investigation of a proposed submodel of the digital twin, simulating the worlds’ forests. We focus on the architecture of the system and the key user needs on data content and access. The results are based on a user survey showing that the forest-related communities in Europe require information on contrasting forest variables and processes, with common interest in the status and forecast of forest carbon stock. We discuss the required spatial resolution, accuracies, and modelling tools required to match the needs of the different communities in data availability and simulation of the forest ecosystem. This, together with the knowledge on existing and projected future capabilities, allows us to specify a data architecture to implement the proposed system regionally, with the outlook to expand to continental and global scales. Ultimately, a system simulating the behaviour of forests, a digital twin, would connect the bottom-up and top-down approaches of computing the forest carbon balance: from tree-based accounting of forest growth to atmospheric measurements, respectively.","PeriodicalId":29645,"journal":{"name":"GI_Forum","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78869227","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: 3

An Augmented Reality Learning Environment for Informal Geoinformatics Education 非正式地理信息学教育的增强现实学习环境

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s3

J. Buchner, P. Jeremias, Nikola Kobzare, Lelia König, Sebastian Oberreiter, Stefan Reiter, Bernd Resch

{"title":"An Augmented Reality Learning Environment for Informal Geoinformatics Education","authors":"J. Buchner, P. Jeremias, Nikola Kobzare, Lelia König, Sebastian Oberreiter, Stefan Reiter, Bernd Resch","doi":"10.1553/giscience2021_02_s3","DOIUrl":"https://doi.org/10.1553/giscience2021_02_s3","url":null,"abstract":"In this paper, we describe an interactive learning environment for geoinformatics enriched by Augmented Reality (AR) that was designed by researchers and practitioners using a design-based research approach. In total, four AR modules were developed to engage learners physically, cognitively and emotionally in the learning process. AR is thus used not merely as a visualization technology, but also to initiate and scaffold learning activities. To address the known challenges of learning with AR, we designed our learning environment to be used by teams of students. This can counteract the problem of cognitive overload, or frustration due to technical problems. We examined our technological and pedagogical framework in an evaluation with 12 learners. The results show that our design did not lead to cognitive overload; technological aspects, such as usability, were also evaluated positively. However, we also detected possible improvements to our design, such as using AR glasses to free the hands for task completion. Overall, it was shown that AR is a good way to expand traditional learning opportunities with digital ones and to enable holistic learning","PeriodicalId":29645,"journal":{"name":"GI_Forum","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78549908","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

Unpacking Layers of Space –Time Complexity in Land–Use Dynamics. A Case Study from the Olive Agrosystems of Sicily (Italy) 土地利用动力学时空复杂性的分层分析。以意大利西西里岛橄榄农业系统为例

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s108

V. Ferrara, A. Wästfelt

{"title":"Unpacking Layers of Space –Time Complexity in Land–Use Dynamics. A Case Study from the Olive Agrosystems of Sicily (Italy)","authors":"V. Ferrara, A. Wästfelt","doi":"10.1553/giscience2021_02_s108","DOIUrl":"https://doi.org/10.1553/giscience2021_02_s108","url":null,"abstract":"The biocultural heritage of historical landscapes is an expression of intertwined ecological and socio-cultural dynamics at different temporal and spatial scales. Such a legacy is what confers high nature value on agricultural systems worldwide. Today there is an urgent need to develop approaches that may allow a more integrated study of biocultural heritage in order to better direct future endeavours for the sustainable management on such agricultural systems. Here, a methodological approach to unpack space-time complexity in the land-use dynamics of historic and current-day agrosystems is presented, based on the use of contextual and spatial-relational segmentation techniques within the research framework of historical ecology. With reference to work done in a case study area in Sicily, the authors first extract geographic contextual configurations and develop a spatial-relational ontology for their semantic interpretation, before using these spatial objects as temporal proxies to disentangle the spatial and temporal dynamics of land use. The result is a cross-disciplinary approach in which perspectives from historical ecology can be used to achieve a deeper understanding of evidence extracted from remotely sensed images. At the same time, advanced spatial analysis techniques may provide a further interpretative tool for scientific inquiry into biocultural heritage.","PeriodicalId":29645,"journal":{"name":"GI_Forum","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82387497","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: 3

Algorithmic Cultures: A Missing Link of Spatial Citizenship Education 算法文化:空间公民教育缺失的一环

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s54

L. Fuchs, D. Kanwischer, Christian Dorsch

{"title":"Algorithmic Cultures: A Missing Link of Spatial Citizenship Education","authors":"L. Fuchs, D. Kanwischer, Christian Dorsch","doi":"10.1553/giscience2021_02_s54","DOIUrl":"https://doi.org/10.1553/giscience2021_02_s54","url":null,"abstract":"This article addresses the current challenges for geographical educational science brought about by algorithmic cultures. It argues from different theoretical perspectives. First, we discuss sociological, cultural and geographical perspectives on algorithmic cultures and link them to selected approaches of media education in general and geographical media education in particular. We conclude from the discussion that Spatial Citizenship Education is especially suitable to address the challenges. This leads to the question of what aspects of Spatial Citizenship Education need to be supplemented to address algorithmic cultures. We therefore examined the curriculum of Spatial Citizenship Education. The analysis demonstrated that the approach is a sound basis for coping with the developments seen in the context of algorithmic cultures. Nevertheless, algorithmic cultures are accompanied by some changes in social and geographical structures that have not yet been captured by the approach. For example, there is no consideration of geomedia as algorithmic, semiautonomous systems. Further implications also emerge. In this context, the investigation into the practicability and relevance of algorithmic cultures for the practical learning process is of particular interest.","PeriodicalId":29645,"journal":{"name":"GI_Forum","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80666504","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

Examining Wildfire Spread Variables for Assessing Forest Burn Vulnerability 研究野火蔓延变量评估森林燃烧脆弱性

GI_Forum Pub Date : 2021-01-01 DOI: 10.1553/giscience2021_02_s94

Victoria Chmarycz, K. Forsythe

引用次数: 0