Virtual　geographic　environments　related　to　dynamic　processes　contribute　to　a　human　understanding　of　the　real　world.　The　results　of　growth　simulations　provide　good　estimations　of　the　future　status　of　forests,　but　they　are　typically　expressed　in　plain　text　summaries,　tables　or　static　displays,　making　it　difficult　to　analyse,　understand　and　further　apply　the　forecast　data.　The　objectives　of　this　study　were　to　propose　a　strategy　for　integrating　a　three-dimensional　(3D)　geographic　environment　with　growth　models　and　to　develop　a　3D　stand　visualization　software　prototype.　Forest　growth　increments　were　predicted　using　the　growth　models,　whereas　stand　dynamics　were　simulated　using　detailed　tree　models　to　recognize　the　changes　in　the　branch　whorls　and　height　of　individual　trees.　The　spatial　structure　of　the　stand　was　represented　by　linking　each　tree　diameter　class　to　a　spatial　distribution　according　to　the　features　of　a　Voronoi　diagram.　The　stand　visualization　system　VisForest,　which　allows　users　to　predict　increments　in　the　diameter　and　height　of　trees,　was　extended　to　estimate　the　number　of　trees　in　each　diameter　class　and　to　visualize　many　aspects　of　a　forest　stand,　e.g.,　individual　tree　structure,　stem　diameter　at　breast　height　(DBH,　i.e.,　1.3m)　distribution　and　height.　The　software　system　provides　a　specialized,　intuitive　tool　for　the　visualization　of　a　stand,　thus　facilitating　the　participation　of　various　stakeholders　in　management　and　education.