安徽农业科学

[目的]研究大食物观下食物产能与国土空间承载时空耦合特征。[方法]利用1999—2023年成都市数据，采用耦合协调度模型研究食物产能与国土空间承载耦合特征。[结果]成都市食物产能下降并在空间格局上呈现向郊县(区)集中的趋势，膳食营养中热量、蛋白质产能下降，脂肪产能上升；成都市国土空间承载较低且具有空间梯度分异特征，呈现主城区高开发-低支撑-低承压与郊区低开发-高支撑-高承压的现象。食物产能与国土空间承载存在显著的正向反馈机制，但呈现高耦合低协调的互动特征，二者在协同发展上面临巨大挑战。[结论]立足大食物观与国土空间承载的有效衔接，可为大食物观理念践行提供参考。

[Objective]To study the spatiotemporal coupling characteristics of food production capacity and territorial space carrying capacity under the big food concept. [Method]This study employs a coupling coordination degree model to analyze the spatiotemporal coupling relationship between food production capacity and land spatial carrying capacity in Chengdu, utilizing city level data from 1999 to 2023. [Result]Research has found that the overall food production capacity in Chengdu is declining, with a decrease in calorie and protein production capacity and an increase in fat production capacity. The spatial pattern of food production capacity is also showing a trend of concentration towards suburban districts and counties. The level of territorial space carrying capacity in Chengdu exhibits relatively low levels with distinct gradient differentiation characteristics. The main urban area demonstrates a characteristic“high development-low support-low load capacity” pattern, while suburban areas show a contrasting “low development-high support-high load capacity” mode. Research shows a strong link between food production and land capacity, but they face “high coupling-low coordination” challenges. [Conclusion]Based on the effective connection between the big food concept and the territorial space carrying capacity, it can provide useful references for the practice of the big food concept.