@article{fdi:010048213, title = {{U}sing pore space 3{D} geometrical modelling to simulate biological activity : impact of soil structure}, author = {{M}onga, {O}livier and {B}ousso, {M}. and {G}arnier, {P}. and {P}ot, {V}.}, editor = {}, language = {{ENG}}, abstract = {{T}his study is the follow-up to a previous one devoted to soil pore space modelling. {I}n the previous study, we proposed algorithms to represent soil pore space by means of optimal piecewise approximation using simple 3{D} geometrical primitives: balls, cylinders, cones, etc. {I}n the present study, we use the ball-based piecewise approximation to simulate biological activity. {T}he basic idea for modelling pore space consists in representing pore space using a minimal set of maximal balls ({D}elaunay spheres) recovering the shape skeleton. {I}n this representation, each ball is considered as a maximal local cavity corresponding to the "intuitive" notion of a pore as described in the literature. {T}he space segmentation induced by the network of balls (pores) is then used to spatialise biological dynamics. {O}rganic matter and microbial decomposers are distributed within the balls (pores). {A} valuated graph representing the pore network, organic matter and microorganism distribution is then defined. {M}icrobial soil organic matter decomposition is simulated by updating this valuated graph. {T}he method has been implemented and tested on real data. {A}s far as we know, this approach is the first one to formally link pore space geometry and biological dynamics. {T}he long-term goal is to define geometrical typologies of pore space shape that can be attached to specific biological dynamic properties. {T}his paper is a first attempt to achieve this goal.}, keywords = {3{D} computer vision ; {B}iological dynamics simulation ; {C}omputed ; tomography ; {C}omputational geometry ; {M}icrobial decomposition ; {P}ore space ; modelling}, booktitle = {}, journal = {{C}omputers and {G}eosciences}, volume = {35}, numero = {9}, pages = {1789--1801}, ISSN = {0098-3004}, year = {2009}, DOI = {10.1016/j.cageo.2009.02.007}, URL = {https://www.documentation.ird.fr/hor/fdi:010048213}, }