In this talk, Prof. Liou will introduce the application of land surface remote sensing to detect the environment changes and then to assess their social impacts. Satellite images and field investigation are integrated to study the change of Jakobshavn Glacier in Greenland, Hailuogou Glacier in Sichuan, and Yuanmou Earth Forest in Yunnan. Great changes were identified in these regions as consequences of socio-economic development.  It raised the great challenge to balance the development and environment protection.