农业现代化研究2024，Vol.45Issue(3)：399-408,10.DOI:10.13872/j.1000-0275.2024.0048
基于县域尺度的耕地"非粮化"时空分异及驱动机制研究
The spatiotemporal differentiation and driving mechanism of farmland "non-grain use" at county scale:A case study of Hunan Province
摘要
Abstract
The phenomenon of farmland"non-grain use"in Hunan Province is becoming more and more prominent.To explore its spatiotemporal differentiation and driving mechanism,and to propose mitigation strategies is of great significance for local agricultural economic development and national food security.Based on the geospatial attribute data of Hunan Province from 2003 to 2020,this study adopts the comprehensive evaluation method,the spatial autocorrelation analysis model and the geographical probe model to investigate the spatiotemporal evolution patterns and driving mechanisms of farmland"non-grain use"at the county level,and put forward the alleviation strategies.Results indicate that:1)The level of farmland"non-grain use"in Hunan Province fluctuated,posing a concerning situation for grain security.The"non-grain use"level of farmland decreased slightly from 2007 to 2017 compared with the previous period,but increased significantly from 2018 to 2020;2)The spatial differentiation characteristics of"non-grain use"at the county level are significant,displaying a"northwest high-southeast low"distribution pattern,with an annual trend of aggregation from the periphery towards the center.The level of farmland"non-grain use"in Hunan Province has a significant positive spatial agglomeration effect.The high-high agglomeration areas are mainly distributed in Fenghuang County,Luxi County,Mayang Miao Autonomous County,Zhijiang Dong Autonomous County;and 3)Grain unit yield is the primary driving factor for farmland"non-grain use",while the lowest driving degree attributed to terrain undulation.The interactive driving force of these factors accounts for 93.2%of the explanatory power for"non-grain use".Based on these findings,Hunan Province should carry out differentiated regional"non-grain use"control countermeasures,improve grain output level,and increase farmers'economic income to effectively alleviate the trend of"non-grain use"of farmland.关键词
耕地/非粮化/粮食安全/时空格局/影响因素Key words
farmland/non-grain use/grain security/spatiotemporal pattern/influencing factors分类
经济学引用本文复制引用
朱毓莹,周浩..基于县域尺度的耕地"非粮化"时空分异及驱动机制研究[J].农业现代化研究,2024,45(3):399-408,10.基金项目
湖南省自然科学基金项目(2024JJ5263) （2024JJ5263）
国家自然科学基金项目(42301300). Natural Science Foundation of Hunan Provincial(2024JJ5263) （42301300）
National Natural Science Foundation of China(42301300). （42301300）
