[Objective]To evaluate the ecological sensitivity of the Weihe River Basin,reveal the impact of human activities on its ecosystem,and predict future changes in ecological sensitivity.[Method]A comprehensive ecological sensitivity analysis was conducted in the Weihe River Basin,selecting landscape ecological risk sensitivity index,biodiversity sensitivity index and soil erosion sensitivity index as research indica-tors,a comprehensive ecological sensitivity index(CESI)was constructed to evaluate the ecological status of the Weihe River Basin over the past 20 years,and GeoSoS-FLUS were used for simulation and prediction.[Result]The ecological sensitivity of the Weihe River Basin had un-dergone significant changes from 2000 to 2020,with the total area of extremely sensitive areas was decreased.The areas with high ecological sensitivity in the Weihe River Basin were mostly concentrated in the west,north and small areas in east.The simulation and prediction of cellu-lar automaton showed that the changes in low sensitivity areas and lower sensitivity areas will be relatively small by 2030,and most of these ar-eas belong to nature reserves,which are far away from human activity areas and have not undergone significant changes;The area of moderately and severely sensitive areas may decrease compared to 2020,while the area of extremely sensitive areas may increase.[Conclusion]The eco-logical situation in the Weihe River Basin has greatly improved over the past 20 years.
关键词
生态敏感性/时空特征/CESI/GeoSoS-FLUS/渭河流域
Key words
Ecological sensitivity/Spatiotemporal characteristics/CESI/GeoSoS-FLUS/Weihe River Basin
维普
万方数据