Sensor　networks　are　suitable　for　a　variety　of　commercial　and　military　applications　due　to　their　self-organization　characteristics　and　distributed　nature.　As　a　fundamental　requirement　for　security　functionality　in　sensor　networks,　key　management　plays　a　central　role　in　authentication　and　encryption.　In　this　paper,　we　describe　an　Adaptive　Key　Selection　(AKS)　scheme　for　multi-deployment　in　sensor　networks　and　analyze　the　scheme　in　the　aspects　of　security,　connectivity　and　overhead.　Our　analysis　shows　that　the　AKS　scheme　can　greatly　improve　the　connectivity　of　sensor　nodes　while　maintaining　the　security　of　an　existing　multi-deployment　scheme.