ASSESSMENT OF THE RELATIONSHIP BETWEEN THE ECONOMY AND THE ENVIRONMENT BASED ON ECOSYSTEM SERVICES VALUE IN NANPING CITY, CHINA

This study quantificationally analyzes and assesses the land-use status and the value of ecosystem services (ESV) in Nanping City and various counties (districts) within the area. It uses the Landsat 5 TM/Landsat 7ETM images of Nanping City taken in 1995, 2005, and 2015, the object-oriented land-use classification method, and the revised table of the equivalent value per unit area of ecosystem services for China We also use the coefficient of sensitivity to verify the mutual dependence between ESV and the service value index per unit area. Lastly, we use the coordination degree between environment and economy (CDEE) to measure the environment and economic coordination of the study area. The results showed that the ESV increased significantly in Nanping City, mainly from 2005 to 2015. Concerning various counties (districts), the ESV showed an increase in most areas, but a decrease in Jian'ou City. The coefficient of sensitivity analysis showed that the ESV in Nanping City was highly dependent on the service value index per unit area, and that the service value index per unit area selected was accurate in this study. Considering all the factors, the CDEE value of Nanping City was 0.0080, and the environment and economic development was at a low harmonic level during the study period. In various counties (districts) studied, there were 3 types of conversion: persistent low harmonic level, low disharmonic to low harmonic, and low harmonic to low disharmonic.