Calculation and analysis on the eco-environmental pressure from residents′ living consumption in the progress of rapid urbanization: a case study on Jiangyin City, Jiangsu Province Ecological footprints:Calculation and analysis of ecological footprints from 1999 to 2001 in Liaoning Province Influences of rural households‘ income differences on living energy consumption and eco-environment: a case study of Jianghan Plain, China Dynamics of ecological footprints of agricultural region in Hexi oasis of Gansu Province Construction of Ecological Monitoring Index Based on Sustainable Development Analyses in Tibet