首页|来源地多元化对中国大豆进口价格的影响

来源地多元化对中国大豆进口价格的影响

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[目的]探究进口来源地多元化与中国大豆进口价格的逻辑关系,对于科学实施大豆进口多元化战略、保障国内大豆稳定供给具有重要意义。[方法]本文基于2007-2021年中国大豆月度进口数据,利用个体时点双固定效应模型,考察进口来源地多元化对中国大豆进口价格的影响及其差异。[结果]①进口来源地多元化有助于降低大豆进口价格,内生性和稳健性检验也证实了研究结果的可靠性。②进口来源地多元化对不同进口比重国家的大豆进口价格影响具有明显的差异,进口来源地多元化能够显著降低从进口占比高的国家进口大豆的价格,而对来自进口占比低的国家的大豆进口价格没有显著的影响。③不同的粮食价格波动时期进口来源地多元化对中国大豆进口价格的影响具有差异,在2007-2013年世界粮食价格波动剧烈时期,进口来源地多元化对中国大豆进口价格的影响较小,而在2014-2021年世界粮食价格波动平缓时期,进口来源地多元化能够显著降低中国大豆进口价格。[结论]要继续完善进口多元化战略以确保中国粮食安全,同时应关注进口多元化战略在不同国别和时期中的差异化效应。
The impact of source diversification on soybean's import prices of China
[Objective]Explore the logical relationship between the diversification of import sources and soybean import prices is crucial for scientifically implementing soybean import diversification strategies and ensuring the stable domestic soybean supply in China.[Methods]Based on the monthly soybean import data of China from 2007 to 2021,this study adopted the individual-time fixed effects model to examine the impact of import source diversification on China's soybean import prices and its heterogeneity.[Results](1)The diversification of import sources contributed to reducing soybean import prices.The findings were validated through tests for endogeneity and robustness.(2)The impact of import source diversification on soybean import prices varied significantly among countries with different import shares.Import source diversification significantly lowered the prices of soybeans imported from countries with a high share of imports,but had a negligible effect on soybean import prices from countries with a low share of imports.(3)The impact of import source diversification on China's soybean import prices varies depending on the period of global food price volatility.In the period characterized by high global food price volatility from 2007 to 2013,the effect of import source diversification on China's soybean import prices was less pronounced.Conversely,during the relatively stable period of global food prices from 2014 to 2021,diversification of import sources significantly reduced China's soybean import prices.[Conclusion]Therefore,it is imperative to further refine the strategy of import diversification to ensure China's food security,while also considering the differentiated effects of import diversification across different countries and time periods.

import source diversificationimport pricesoybean marketindividual-time fixed effects modelChina

郑旭芸、贺梅英

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广东技术师范大学财经学院,广州 510665

华南农业大学经济管理学院,广州 510642

进口来源地多元化 进口价格 大豆市场 个体时点双固定效应模型 中国

国家自然科学基金项目广东省哲学社会科学基金项目广东省哲学社会科学基金项目

72303042GD22CYJ18GD23YYJ05

2024

资源科学
中国科学院地理科学与资源研究所 中国自然资源学会

资源科学

CSTPCDCSSCICHSSCD北大核心
影响因子:2.408
ISSN:1007-7588
年,卷(期):2024.46(7)