Projects Conferences and Seminars

Talk Announcement: Rémi Lemoy "The city in 2 and 3 dimensions: monocentric analysis and scaling of land use and population density" on monday the 21th november 2016 in Besançon

 

The talk will take place at 14h on monday the 21th november at the ThéMA lab building (3rd floor building D).

 

Remi Lemoy

Rémi Lemoy

Researcher (Post-doc) at the University of Luxembourg

Publications: https://www.researchgate.net/profile/Remi_Lemoy

 

Abstract:

In this work we study the profile of land use and population density in European cities with respect to the distance to the city centre. We use the GMES Urban Atlas database, providing a precise description of land use at 5m resolution in the 300 major European urban areas (more than 100.000 inhabitants). We combine this dataset with population density from the Geostat population grid, which covers the whole of European Union with a 1km2 resolution. Population is allocated proportionally to surface and weighted by soil sealing and density classes of the GMES data.

We analyse the evolution with distance to the city centre of population density and of the share of land which is artificial. We analyse the scaling of these curves with respect to city population. We find that land use curves, in particular artificial land uses, tend to scale like the square root of city population. Population curves have roughly exponential shapes, as it has been widely modelled in the literature, although usually not based on land use and soil sealing data. Population curves tend to scale like the city population to a power of roughly 1/3.

These results allow us to propose a simple monocentric description of land use shares and population curves in a representative European city, whose size can be chosen based on the scaling relationships we obtain. This result is especially interesting, and of practical use, for the purpose of calibration and validation of monocentric urban models, that can differentiate (or not) housing from land and include interactions between non-developed and developed land.

Last Updated: Tuesday, 15 November 2016 13:14

The 12th edition of the Théo Quant meetings will take place in Besançon May 20 to 22 2015

Following former editions, the 12th Théo Quant meetings aim at creating a space where generations can meet, allowing experienced researchers to expose original work, and encouraging young researchers to communicate on their ongoing projects.
Initially centered on theoretical and quantitative geography, this conference is widely open on all disciplines where geographical space is part of the analyzed subject.

Théo Quant meetings wish to encourage debates on conceptual and methodological questions, with no particular thematic focus. However some leading themes will be highlighted based on the participants' submitted material.

More info online: http://thema.univ-fcomte.fr/theoq/

Alexandre Moine, geography professor.

Last Updated: Wednesday, 18 March 2015 08:37