災變管理 危機處理能力 九二一大地震 解決期 重建區 民生支援系統 社經結構改造 緊急命令 九二一震災重建暫行條例 立法院 三讀 災後重建機制 治理共享模式 Crisis management Public administration Fundamental theory the stage of resolution 921 earthquake The new government The devastated areas Supporting system of necessities The emergency decree The temporary act of the 921 earthquake Land rezone The mechanisms of post-disaster reconstruction Amendment of the 921 earthquake reconstruction act Post-disaster reconstruction