[Analysis of Spatio-temporal Characteristics and Influencing Factors of Ecological Environment Quality in the Taihang Mountain Area].

The mastery of the spatio-temporal variations in the ecological environment quality of the Taihang Mountain area and its influencing factors are of significant importance for the coordinated development of ecological environment protection and socio-economic development in the Taihang Mountain Region. Based on the Google Earth Engine （GEE） and remote sensing ecological index （RSEI）, the spatio-temporal distribution characteristics of ecological environment quality in the Taihang Mountain area from 2001 to 2021 were studied, and a structural equation model was used to quantify the direct and indirect impacts of the natural environment and anthropogenic activities on ecological environment quality in this area. The results indicated that the ecological environment quality in the study area was mainly at moderate and good levels, showing a spatial distribution pattern of high quality in the south and low in north. From 2001 to 2021, the changes in ecological environment quality in the Taihang Mountain area primarily involved improvements, with an improvement area of 6.5×10⁴ km², accounting for 47.82% of the total study area. The Hurst index exhibited a mean value of 0.44, and the proportion of areas with values less than 0.5 was 75.81%, indicating anti-persistence, where the future trend was opposite to that from 2001 to 2021. Precipitation had the most significant direct impact on the ecological environment quality of the Taihang Mountain area, followed by anthropogenic activity factors, while elevation indirectly affected the ecological environment quality by influencing temperature, slope, anthropogenic activities, and vegetation types.