Martin Paegelow

Martin Paegelow
Université Toulouse II - Jean Jaurès | UTM · UFR Sciences, Espaces, Sociétés (SES)

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105
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Publications

Publications (105)
Book
Full-text available
This open access book represents a comprehensive review of available land-use cover data and techniques to validate and analyze this type of spatial information. The book provides the basic theory needed to understand the progress of LUCC mapping/modeling validation practice. It makes accessible to any interested user most of the research community...
Chapter
This chapter offers a general overview of the available tools and strategies for validating Land Use Cover (LUC) data—specifically LUC maps—and Land Use Cover Change Modelling (LUCCM) exercises. We give readers some guidelines according to the type of maps they want to validate: single LUC maps (Sect. 3), time series of LUC maps (Sect. 4) or the re...
Chapter
In this chapter we explore pattern analysis for categorical LUC maps as a means of validating land use cover maps, land change and land change simulations. In addition to those described in Chap. “Spatial Metrics to Validate Land Use Cover Maps”, we present three complementary methods and techniques: a Goodness of Fit metric to measure the agreemen...
Chapter
In Land Use Cover Change (LUCC) modelling, soft maps are often produced to express the propensity of an area to land use change. These maps are generally prepared in raster format, and have values of between 0 and 1, indicating the propensity of each pixel to change. In the literature, they are referred to as suitability, change potential or change...
Chapter
Several validation techniques based on the cross-tabulation matrix can be applied to validate Land Use Cover (LUC) maps. The exercises in this chapter focus, in particular, on the cross-tabulation techniques proposed by Robert Gilmore Pontius Jr., who has developed many indices and techniques in this field. Given his major contribution to this fami...
Chapter
Full-text available
The overlaying of two map layers is a standard GIS procedure. As we saw in the previous chapter, it enables us to compute the intersection between two feature classes and cross-tabulate either the area or the pixel count of the intersecting features depending on whether raster or vector data are being used. Cross-tabulation can be used to evaluate...
Chapter
When validating Land Use Cover (LUC) products, pattern analysis can be used to assess the agreement between the patterns of two maps. It therefore complements other methods and techniques that focus exclusively on the quantity (proportions) and allocation agreement between the categories. Spatial metrics are the first step for any analysis of the p...
Chapter
In this chapter, we offer a brief introduction to the main concepts associated with Land Use Cover (LUC) mapping, Land Use Cover Change (LUCC) modelling and the uncertainty and validation of LUC and LUCC data and model outputs. The chapter summarizes the theoretical fundamentals required to understand the rest of the book. First, we define Land Use...
Chapter
This chapter offers an introduction to the book and is specifically recommended for all readers intending to do the practical exercises it contains. It also provides readers with all the information they require to make the most of the book’s contents. In this chapter, we explain the aim, structure and intended audience for this book. We also give...
Article
Full-text available
Research on the uncertainty of Land Use Cover Change (LUCC) models is still limited. Through this paper, we aim to globally characterize the structural uncertainty of four common software packages (CA_Markov, Dinamica EGO, Land Change Modeler, Metronamica) and analyse the options that they offer for uncertainty management. The models have been comp...
Chapter
In the original version of this chapter, the URL link on page 11 in section “5.5 Data” was wrongly pointed to https://dx.doi.org/10.1007/978-3-030-90998-7_16 saying “DOI Not Found”. This has been corrected in the updated version.
Presentation
Full-text available
Spatial agent-based models (ABMs) are increasingly used to study land use and land cover changes (LUCC). This process-based approach allows formalizing the interactions between society and environment through the modelling of human decision-making processes regarding to the land use and its impact on regional land cover. Data-driven ABMs, which hav...
Conference Paper
Full-text available
Land use and land cover change (LUCC) models are increasingly being used to anticipate the future of territories, particularly through the prospective scenario method. In the case of so-called trend or Business-as-Usual (BAU) scenarios, the aim is to observe the current dynamics and to extend them into the future. However, as they are implemented a...
Article
Full-text available
Input maps are one of the main sources of uncertainty in Land Use Cover Change (LUCC) models. Such models are usually raster-based. Although extensive research has assessed the impact of the scale of input raster data in the modelling exercise, few studies have focused on the scale of input vector maps. This paper aims to investigate the effect tha...
Conference Paper
Full-text available
L’économie du Bénin est fortement dominée par le secteur agricole. Les superficies agricoles dans la commune de Ouaké connaissent une expansion avec le phénomène de croissance démographique. L’objectif de cette étude est de cartographier la dynamique de l’occupation du sol dans cette zone où le climat et les sols sont favorables au développement de...
Chapter
All data and geospatial analyses come with uncertainty. Although its importance has been widely recognized, uncertainty issues are still not correctly addressed in most of the current geospatial research. This chapter aims to provide an overview of the concepts, sources and tools to manage the uncertainty in geospatial analysis. To this end, we int...
Article
Full-text available
L’intense activité agricole dégrade la végétation spontanée dans le nord-ouest du Bénin. L’objectif de cette étude est de cartographier la dynamique de l’occupation du sol dans ce secteur du Bénin, une zone dont le climat et les sols sont favorables au développement des activités agricoles. Les données utilisées dans le cadre de cette étude sont es...
Article
Full-text available
L'objectif de cette étude est de caractériser la variabilité pluviométrique et son impact sur le couvert végétal du nord-ouest Bénin. Les données utilisées dans cette étude sont essentiellement des données pluviométriques (1961-2016) de 16 stations ayant une influence sur le secteur d'étude, des images satellitaires Landsat (2000 et 2016) et une sé...
Article
Full-text available
In north-west Benin, land occupation is undergoing a significant dynamic due to intense human activities putting the ecosystem in precarious balance. The objective of this study is to quantify landscape dynamics and explore possible futures of land use using remote sensing, GIS and spatiotemporal modelling tools. Landsat socio-economic data and ima...
Chapter
Full-text available
Scientific research builds projects and seeks to achieve specific goals that refer to the principles of scientific inference: deduction, induction and abduction. These inferences correspond to the time path of the prediction—which belongs to the world of rationality and accuracy—and scenarios—which transcribe the uncertain nature of the studied pro...
Chapter
Full-text available
Land change models can help scientists and users to understand change processes and design policies to reduce the negative impact of human activities on the earth system at scales ranging from global to local. With the development of increasingly large computing capacities, multiple computer-based models have been created, with the result that the...
Chapter
This technical note presents the method of LUCC based validation indices commonly used during the validation step and including techniques such as of figure of merit, producer’s and user’s accuracy. We present first the interest and the technical details before giving an example.
Chapter
In land change modeling, the simulation stage uses parameters and processes to allocate changes by resolving competition between transitions. They are also used to reproduce spatiotemporal patterns of modeled change. There are also several advanced options that try to improve the simulation outputs. This chapter focuses on these simulation steps an...
Chapter
This technical note presents the technique of LUCC budget that is commonly used during the modeling process in both the calibration and the validation stage. First we present the interest and technical details of this technique before illustrating the technique by an example.
Chapter
In land change modeling, calibration enables the modeler to establish the parameters for the model in order to produce expected outcomes, similar to those observed for the study area over a period in the past or consistent with a given scenario. Depending on the modeling approach, the parameters are set using maps which describe past change or info...
Chapter
Validation is the third stage in the modeling process, after calibration and simulation, and also applies to scenarios. It is an essential part of the process in that the credibility of a model depends on the accuracy of its output. A large range of validation approaches and tools exist, many of which can also be used during the calibration stage....
Chapter
Most geomatic land use/cover (LUC) simulation tools use two LUC maps as training dates, particularly prediction models based on Markov chains. In this paper we begin by listing the potential errors resulting from only considering two past dates. We then illustrate the consequences of this approach on quantitative model calibration using a dataset e...
Chapter
This technical note presents multi criteria evaluation (EMC). EMC is, in the frame of modeling, a technique used to allocate simulated quantities to most probable or suitable space. First we present the interest and technical details of this technique before giving an example.
Book
This book provides a detailed overview of the concepts, techniques, applications, and methodological approaches involved in land use and cover change (LUCC) modeling, also known simply as land change modeling. More than 40 international experts in this field have participated in this book, which illustrates recent advances in LUCC modeling with exa...
Article
Full-text available
Industrial forest plantation expansion is dramatically impacting the environment (biodiversity, soil, water, etc.) and social sphere. Since the enactment of Decree Law 701 (DL 701) in 1974 under the military government of Augusto Pinochet, forestry practices in Chile have become more intensive (genetic manipulation, high yield clearcutting and shor...
Article
Full-text available
Dans cet article, nous proposons une nouvelle méthode pour extraire automatiquement les forêts dans les cartes d'Etat-major du 19 ème siècle numérisées. La démarche proposée est constituée de quatre étapes principales : filtrage de l'image, changement d'espace colorimétrique, identification des forêts à l'aide d'un détecteur non paramétrique (SVDD)...
Article
This study focuses on various validation and error analysis techniques that are based on map comparisons. After a literature review, authors apply these techniques to analyze the accuracy of LUCC models in terms of quantity, pixel by pixel correctness and LUCC components such as persistence and change. In addition, the fidelity of the spatial patte...
Poster
Full-text available
Industrial forest plantations expansion is dramatically impacting environment (biodiversity, soil, water, etc.) and social sphere. Since the promulgation of the Decree Law 701 (DL 701) in 1974 under the military government, silvicultural practices became more intensive (genetic manipulation, high yield clear-cut and short-rotation). The DL 701 (and...
Article
Abstract Land use/cover change (LUCC), as an important factor in global change, is a topic that has recently received considerable attention in the prospective modeling domain. There are many approaches and software packages for modeling LUCC, many of them are empirical approaches based on past LUCC such as CLUE-S, DINAMICA EGO, CA_MARKOV and Land...
Article
Full-text available
This study compares two types of intermediate soft-classified maps. The first type uses land use/cover suitability maps based on a multi-criteria evaluation MCE. The second type focuses on the transition potential between land use/cover categories based on a multi-layer perceptron MLP. The concepts and methodological approaches are illustrated in a...
Article
Full-text available
Since the end of the 1980s, the commune of San Juan de la Costa (province of Osorno – 10th region of Los Lagos), is experiencing a remarkable expansion of pine and eucalyptus plantations. These afforestation are at the roots of many environmental and social disturbances in an area considered as a hotspot for biodiversity. If the Land Use and Land C...
Conference Paper
Full-text available
Simulation and spatialization of prospective scenarios are characteristics of geoprospective. They allow societies to anticipate and to reduce their uncertainties regarding future land use and land cover changes. Despite a diversity of approaches and techniques, the construction of scenarios follows two temporal courses (exploratory and normative)....
Article
This article introduces the Flow matrix, which expresses the sizes of transitions among categories between two time points. We use the Flow matrix to create a metric R that measures the instability of annual change among time intervals that partition ...
Article
Full-text available
It is widely recognized that present-day biological diversity may reflect past land use and landscape features. Understanding the historical background is essential to explain the ecosystem functioning of landscapes today. Numerous historical spatial data have been used to reconstruct these pathways but resulted in problems of sources, formats and...
Conference Paper
Full-text available
In this chapter, we describe an automatic procedure to capture features on old maps. Early maps contain specific informations which allow us to reconstruct trajectories over time and space for land use/cover studies or urban area development. The most commonly used approach to extract these elements requires a user intervention for digitizing which...
Article
Full-text available
Since the end of the 1980s, the commune of San Juan de la Costa (province of Osorno - 10th region of Los Lagos), is experiencing a remarkable expansion of pine and eucaly ptus plantations. These afforestation are at the roots of many environmental and social disturbances in an area considered as a hotspot for biodiversity. If the Land Use and Land...
Book
In this chapter, we describe an automatic procedure to capture features on old maps. Early maps contain specific informations which allow us to reconstruct trajectories over time and space for land use/cover studies or urban area development. The most commonly used approach to extract these elements requires a user intervention for digitizing which...
Conference Paper
Full-text available
Monitoring, modelling and predicting timber plantations dynamics. The case of San Juan de la Costa (Chile)
Article
Introduction As in many mountain areas in Europe, agro-pastoral landscapes in the valleys of the Pyrenees are subject to fast spontaneous reforestation [1,2]. The main driving forces and the consequences of these transformations have been widely studied during the last decades [3]. Encroachment is mainly related to the abandonment of farmland in co...
Book
This paper presents the first results of the MODE-RESPYR project that aims at assessing past and present land cover changes in the French Pyrenees at various spatial and temporal scales. A semi-automatic GEOBIA approach is proposed to produce land cover maps since the 1940s in three local study sites. The major change observed resulted in forest en...
Article
Full-text available
Résumé.— Dans le Sud du Chili, de nombreuses plantations forestières remplacent progressivement la plus grande forêt tempérée humide australe, connue pour sa biodiversité. L'objectif est de repérer et de cartographier ces plantations par le biais de données de télédétection : l'indice de végétation NDVI du satellite MODIS. Le profil temporel de cet...
Article
Full-text available
In southern Chile, large forest plantations have progressively replaced the largest temperate rainforest in the southern hemisphere, renowned for its biodiversity. This study aims to detect and map these plantations using remote sensing, MODIS NDVI data. The temporal profile of this vegetation index distinguishes between logging and forest fires. S...
Article
La géomatique est un espace de recherche interdisciplinaire au sein duquel collaborent géographes, informaticiens, géomaticiens, agronomes, écologues, archéologues, etc. Les problématiques de représentation, modélisation, acquisition, intégration, analyse et visualisation de données s’instancient dans cet espace, avec les spécificités liées aux dom...
Book
Ce numéro spécial regroupe des articles sélectionnés à l’issue de l’édition 2010 de la conférence internationale de géomatique et analyse spatiale SAGEO (Spatial Analysis and GEOmatics) organisée à Toulouse du 17 au 19 novembre 2010. Thème: «Outils, Méthodes et Modèles en Géomatique pour la production de connaissances sur les territoires et le pays...
Article
Durant les dernieres decennies, une variete de modeles ont ete developpes pour simuler les changements futurs des modes d'occupation et d'usage des sols. Dans cette etude, nous avons compare quatre logiciels de modelisation : CLUE-S, DINAMICA EGO, CA_Markov et Land Change Modeler. Nous avons examine les differentes methodes et outils disponibles da...
Article
Full-text available
L'exploitation des données de télédétection a pour conséquence la production massive des données géographiques. Les acteurs impliqués dans leur gestion utilisent des catalogues d'archivage basés sur des normes géographiques complexes ne prenant pas en compte l'évolution spatiale, temporelle et des noms des lieux des objets géographiques. Dans cet a...
Conference Paper
Full-text available
Land use/cover changes (LUCC) are significant to a range of issues central to the study of global environmental change and have thus have received growing attention by decision makers and scientists. Over the last decades, a range of models of LUCC have been developed to meet land management needs, and to better understand, assess and project the f...
Book
Milieux changeants, instables, dangereux parfois, rudes souvent, les montagnes attirent pourtant, et ce depuis fort longtemps, des populations nombreuses. Leur anthropisation ancienne témoigne du vif intérêt qu'elles ont très tôt représenté pour les hommes et leurs activités. En plaçant au cœur de son sujet la notion de ressource, cet ouvrage propo...
Article
La diversité des terroirs de moyenne montagne se trouve unie, fédérée par un élément omniprésent dans le paysage : il s'agit de l'arbre hors forêt, en dehors des bois et forêts. L'arbre hors forêt est partout, qu'il soit arbre épars, isolé au milieu d'une prairie ou sur la place d'un village, planté en alignement le long des routes, qu'il se trouve...