Jiangsu University of Science and Technology, School of Humanity & Social Science, Zhenjiang, China.
PLoS One. 2024 Aug 16;19(8):e0309071. doi: 10.1371/journal.pone.0309071. eCollection 2024.
Food security is one of the important issues in the current world development process. The article takes 31 provinces (districts and cities) in China as the research object and constructs a multidimensional food security level evaluation index system from four dimensions: quantitative security, nutritional security, ecological security, and capacity security. Using the entropy method, China's food security index was calculated for the ten-year period from 2013 to 2022. Overall, China's food security level showed an upward trend during the decade, with the provinces of Shandong, Heilongjiang, and Henan having the highest level of security. The distribution dynamics of food security and its spatiotemporal evolution in the seven regions were examined using the Dagum Gini coefficient and its decomposition, and the absolute and conditional convergence of food security in the different areas was verified. The results of the study show that the provinces within East China have the largest gap in food security levels between them, and there is absolute β-convergence. Looking at China as a whole, the development of its food security level is characterized by significant convergence, which means that provinces with a low level of food security will have a faster rate of growth than those with a high level of food security, resulting in a gradual narrowing of the gap in food security levels between provinces.
食品安全是当前世界发展进程中的重要议题之一。本文以中国 31 个省（区、市）为研究对象，从数量安全、营养安全、生态安全和能力安全四个维度构建了多维食品安全水平评价指标体系。采用熵值法对 2013-2022 年十年间中国的食品安全指数进行了计算。总体而言，中国的食品安全水平在这十年间呈上升趋势，山东、黑龙江和河南三省的安全水平最高。利用 Dagum Gini 系数及其分解，研究了七大区域的食品安全分布动态及其时空演变，并验证了不同区域食品安全的绝对和条件收敛性。研究结果表明，华东地区内部各省之间的食品安全水平差距最大，存在绝对β收敛。从全国范围来看，中国食品安全水平的发展具有显著的收敛性，这意味着食品安全水平较低的省份将比食品安全水平较高的省份增长更快，从而逐渐缩小各省之间的食品安全水平差距。
