The purpose of the work: the analysis of the spatial-temporal and ecological laws of the ruderal vegetation in Central Yakutia. The basic anthropogenous places of inhabitation have been typified. The syntaxonomy of the ruderal vegetation of Central Yakutia has been built, in which 5 unions, 16 assiciations, 19 subassociations are new. The connections of the syntaxons of the ruderal vegetation with natural and anthropogenous factors have been revealed. The regioning of the ruderal vegetation has been performed on the base sigma-syntaxonomy. The performed investigation has allowed to develop the design of optimization of the ruderal vegetation of the Central Yakutia, accepted for use by the State Committee of Building of Sacha Republic (Yakutia)Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio