征地拆迁损失调查和社会经济调查是水利水电工程移民安置与社会经济系统重建工作的重要组成部分，是编制移民安置规划、投资概算和移民安置实施、监测与管理的基础工作，是确定工程规划布局与建设规模的重要依据。１征地拆迁损失调查损失调查，特指调查人员到达被调查对象... Land acquisition and relocation surveys and socio-economic surveys are important components of the resettlement and socio-economic system reconstruction of water conservancy and hydropower projects. They are the basis for the preparation of resettlement planning, investment estimates and resettlement implementation, monitoring and management. They are the determination of project planning layout. The important basis for the scale of construction. 1 Loss investigation investigation of loss of land acquisition and demolition, especially when the investigation personnel arrive at the surveyed object...