Abstract:To realize the rapid and effective identification of high risk areas of large-scale ecological disturbance, This research selected 9 indicators from three aspects of "ecological vulnerability (EV)", "accessibility to disturbance (AD)" and "easy-attractiveness of resources (RE)", and constructed the index system and evaluation model of ecological disturbance risk assessment, forming a complete large-scale ecological disturbance assessment technology and method. Using this technology and method, the risk status of the national land space ecological disturbance, the spatial distribution pattern and its causes were evaluated and analyzed, and the 2017~2019 national nature reserves human activity monitoring data and ecological vulnerability result in the National Planning for Major Function Zones were used to analyze the accuracy of the ecological disturbance risk assessment results. The results showed that more than 90% of human activities in nature reserves were concentrated in the medium and high risk areas, The national ecological disturbance risk was mainly intermediate, followed by low and relatively low, and high and relatively high areas were the least. The high and relatively high risk areas were mainly distributed in the west-central and northeast regions such as the Qinling Mountains, Qilian Mountains, Sanjiangyuan, and Inner Mongolia grasslands. The spatial distribution characteristics of ecological disturbance risk had a strong correlation with factors such as the structure and function of the ecosystem, topography, traffic conditions, and resource potential.
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