A former inhabited site is covered by green plants in Luoshan National Nature Reserve in Northwest China's Ningxia Hui autonomous region on Aug 22, 2012. As a result of ecological migration of former inhabitants, the ecological condition in the reserve has experienced a 13-year-long recovery, transferring a desert into a green land. During this period, the number of species in the reserve has grown from 295 in 2000 to 366 today, with the protected area expanding from 7,200 hectares to 33,710 hectares. [Photo/Xinhua]