Analysis of Ecological Environment Change and Driving Factors in Wuhai City, Inner Mongolia (2000–2023) Based on Topsoil Remote Sensing Ecological Index

Key Points

• The research aims to analyze the ecological quality changes in Wuhai City from 2000 to 2023 and explore the driving factors behind these changes.
• Utilized Landsat remote sensing imagery from 2000 to 2023.
• Developed Topsoil Remote Sensing Ecological Index (TRSEI) integrating TGSI with traditional ecological indicators.
• Conducted spatial autocorrelation and geographic detector analyses.
• TRSEI showed a significant contribution of over 60% from the first principal component.
• Ecological quality fluctuated between 0.298 and 0.367, with improvements noted from 2000-2010.
• Land use during this period shifted, with significant reduction in unused land and expansion of construction land.