[Spatial-temporal Evolution of Landscape Ecological Risk and Driving Forces Based on Ecosystem Service Value Along the Yellow River in Zhengzhou and Luoyang Cities].
摘要
Scientific evaluation of spatio-temporal differentiation of landscape ecological risks and identification of driving factors in order to provide reference for regional ecological risk regulation and sustainable development. Based on land use data from 1990 to 2022， the ecosystem service value of the study area was calculated， and the characteristics of changes were analyzed. From the perspective of "loss" and "probability" accumulation， the landscape ecological risk assessment system based on ecosystem service value was constructed. Combined with spatial autocorrelation analysis and Geodetectors， the evolution trend and influencing factors of ecological risks in the areas along the Yellow River in Zhengzhou and Luoyang cities were explored. The results showed that： ① Cultivated land and construction land were advantageous landscape types in the study area. Land use conversion was mainly characterized by the transfer of cultivated land and construction land， while the overall fluctuation of forest land， grassland， and water was minimal. ② Over the past 32 years， the total value of ecosystem services declined， with the spatial distribution characterized by "high values on the north and south sides and low values in the middle." Regional ecosystems were dominated by regulating services， with cultivated land and water contributing the most to the value of ecosystem services. ③ From 2000 to 2022， the landscape ecological risk intensified， with a significant decrease in low risk areas and an increase in high and medium-high risk areas. Low and medium-low value areas were concentrated in the western hilly terrain， and the overall spatial distribution of ecological risk showed a significant positive correlation. ④ The proportion of construction land， nighttime light intensity， and vegetation coverage were the main factors driving changes in landscape ecological risk. During the research period， most of the interactions among the factors were increasing， and the interaction