Confirmatory Analysis of the Effect of Socioeconomic Factors on Ecosystem Service Value Variation Based on the Structural Equation Model—A Case Study in Sichuan Province

Understanding the regional distribution characteristics of ecological service values (ESV) and their driving factors can provide background information scientific basis for environmental protection policy. This paper adopted revised equivalent factor method to calculate ESV Sichuan province in 2015 2020, spatial variation were identified accordingly. Then, structural equation model (SEM) was used explore effects socioeconomic on ESVs Province. The results show that Province increased by 2521.45 million USD during period, an increase approximately 0.67%. western area had higher compared eastern area, with showing a downward trend cities upward trend. population, affluence, science technology indirectly affect through affecting land use cover, this indirect effect is stronger than direct ESV. Among them, population strongest, followed weakest. result also suggests it necessary propose differentiated policies achieve coordinated development society, economy, environment.