Based on a vulnerability assessment model, this paper constructs an evaluation index system for both food security and ecological security vulnerabilities. Using the entropy weight method, the study measures the levels of food security and ecological security in 31 provinces of China from 2003 to 2021 and applies a coupling coordination degree model to determine the vulnerability levels of the “food-ecology” dual security across different provinces. The paper employs the Dagum Gini coefficient and its decomposition to analyze regional differences and their sources in the “food-ecology” dual security vulnerability levels across the major grain-producing regions, major grain-consuming regions, and grain production-consumption balanced regions. Furthermore, the study discusses the dynamic development characteristics of the “food-ecology” dual security vulnerability levels in each province using kernel density estimation and spatial Markov chain analysis methods. It is found that from 2003 to 2021, the overall vulnerability levels of food security in the nation and in the three major regions showed a fluctuating downward trend. The overall Gini coefficient of the “food-ecology” dual security vulnerability levels showed a significant upward trend, indicating that the gap in vulnerability levels between provinces expanded during this period. The absolute differences in the “food-ecology” dual security vulnerability levels across the country and the three major regions increased from 2003 to 2021. The results of the Markov chain analysis show that provinces with high “food-ecology” dual security vulnerability exert a strong spatial influence on neighboring areas, causing the overall vulnerability levels in adjacent provinces to rise. This study concludes that during the study period, the “food-ecology” dual security vulnerability levels in the nation and the three major regions decreased, while the overall disparities tended to increase.
WANG Chang-song
,
LI Jian-qiang
,
JIANG Jing
. Statistical measurement, regional differences and dynamic evolution of “Food-Ecological” Dual Security in China’s provinces: Analysis based on vulnerability perspective[J]. Urban Problems, 2024
, 353(12)
: 32
-45
.
DOI: 10.13239/j.bjsshkxy.cswt.241203
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