The interactive relationship among construction land expansion, carbon emission, water resource and energy consumption in the suburb of chongqing over the past 26 years

Abstract

Study on the interrelationship among construction land expansion, carbon emission, water resource and energy consumption will be the key point to protect water area and mitigate climate change. Through remote sensing, Geographic Information System technology and vector error correction mechanism, we analyzed the expansion of construction land and carbon emission characteristics. We evaluated land use, water area and energy consumption data over the past 26 years in Bishan, which is a typical city with highly expanded construction land in the suburb of Chongqing, and the relationship between carbon emission intensity and social economic indicators from the perspective of construction land expansion. Results showed that the construction land expansion in Bishan had an average annual growth rate of 17.8% from 1990 to 2015. The average annual increase rates of rural residential areas, town land, mining land, transportation land and water conservancy facility land were 13.7%, 34.2%, 4.3%, 32.4% and 13.8%, respectively. The correlation of construction land area and carbon emissions was extremely significant. The quantity of construction land and carbon emission intensity showed a ‘U’-curve relationship. Moreover, the GDP and investment per capita significantly affected the per unit area of the construction land per capita in the level of 10%. Energy consumption remained as the main reason for carbon emission per unit area of the construction land.