Spatial-Temporal Characteristics and Driving Factors of Collaborative Security of Water-Energy-Food Linkage System in the Yellow River Basin
Water,energy and food are the key elements for realizing the national strategy of the Yellow River Basin.Based on the analysis of the collaborative security mechanism of the water-energy-food linkage system,a collaborative security evaluation in-dex system was constructed.Based on the panel data of 85 prefecture-level cities in the Yellow River Basin from 2000 to 2019,the improved coupling coordination degree model was used to measure the collaborative security degree of the water-energy-food linkage system in the Yellow River Basin,and the kernel density function and spatial econometric model were used to explore its spatial and temporal characteristics and driving factors.It is found as follows.① From 2000 to 2019,the comprehensive security level of the water-energy-food linkage system in the Yellow River Basin is generally on the rise,and its spatial distribution pat-tern is gradually decreasing from east to west.② During the study period,the spatial difference of the collaborative security de-gree of the water-energy-food linkage system changed obviously,from the spatial pattern of"downstream＞upstream＞mid-stream"in the early stage of the study to the pattern of"downstream＞midstream＞upstream"in the late stage of the study.③ Social development level,education level,innovation investment level and investment level have a positive impact on collabo-rative security,while economic operation level,trade level and environmental pollution level have a negative impact.
water-energy-food linkage systemcollaborative securityspatial-temporal characteristicsthe Yellow River Basin
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