College of Agronomy, Northwest A&F University, Yangling 712100, China.
The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100, China.
Int J Environ Res Public Health. 2022 Jul 5;19(13):8210. doi: 10.3390/ijerph19138210.
Food security is the foundation of development. We comprehensively characterized the spatiotemporal patterns of non-grain production (NGP) areas in China and elucidated the underlying factors driving NGP. Our objectives were to map NGP on cultivated land (NGPCL) in China, and to quantify its spatiotemporal patterns, to investigate the factors underlying NGP spatial differentiation, and to provide a scientific basis for developing NGP management policies and reference points for protecting cultivated land in other countries. We mapped NGPCL in China from 2000 to 2018 using remote sensing and geographic information system data. The spatiotemporal evolution of the NGP rate (NGPR) was also investigated. The dominant factors driving NGP progression and associated interactions were identified using geographic detectors. From 2000 to 2018, the NGPR gradually decreased from 63.02% to 52.82%. NGPR was high in the west and low in the east, and its spatial differentiation and clustering patterns were statistically significant. Precipitation, temperature, altitude, and soil carbon content were the dominant factors affecting the spatial differentiation in NGPR. The interaction between these factors enhanced the spatial differentiation.
粮食安全是发展的基础。本研究全面刻画了中国非粮生产（NGP）区域的时空格局，并解析了驱动 NGP 的潜在因素。本研究旨在绘制中国耕地（NGPCL）上的 NGP 图，并量化其时空格局，研究 NGP 空间分异的驱动因素，并为制定 NGP 管理政策和为其他国家保护耕地提供科学依据。本研究使用遥感和地理信息系统数据，从 2000 年到 2018 年绘制了中国的 NGPCL 图。还研究了 NGP 率（NGPR）的时空演变。利用地理探测器识别了驱动 NGP 发展的主导因素及其相互作用。从 2000 年到 2018 年，NGPR 逐渐从 63.02%下降到 52.82%。NGPR 西部高，东部低，其空间分异和聚类格局具有统计学意义。降水、温度、海拔和土壤碳含量是影响 NGPR 空间分异的主导因素。这些因素之间的相互作用增强了空间分异。
