城乡居民食物消费生态足迹的时空演变及多情景模拟——以长江经济带为例
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1.南京农业大学公共管理学院;2.南京农业大学

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江苏省社会科学基金一般项目(23ZXZB022),江苏省研究生科研与实践创新计划项目(KYCX24_1009)


Spatial-temporal evolution and multi-scenario simulation of food consumption ecological footprint for urban and rural residents: A case study of the Yangtze River Economic Belt
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College of Public Administration,Nanjing Agricultural University

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    摘要:

    城乡居民消费是食物消费体系的终端环节。本研究以长江经济带作为典型研究区,运用改进的基于组分法的生态足迹模型定量分析了城乡居民食物消费生态足迹的时空演变特征,并借助基于共享社会经济路径(SSPs)的系统动力学(SD)模型对未来的发展趋势进行预测。研究结果表明:(1)2005—2022年,长江经济带城乡居民的食物消费生态足迹总体呈增长趋势,城镇居民的生态足迹高于农村居民,且食物消费总生态足迹的增幅也更大。同时,城乡居民膳食结构渐趋一致,食物消费人均生态足迹的结构变化呈现出显著的区域特征。(2)长江经济带11个省市城乡居民食物消费总生态足迹在空间分布上呈现“东高西低”的格局。其标准差椭圆呈“西南—东北”方向分布且面积略有缩小,这意味着城乡居民食物消费总生态足迹的空间异质性有所减弱。此外,城镇与农村居民食物总生态足迹的重心轨迹呈现出相向移动趋势,表明区域内食物消费领域的城乡融合发展进一步加强。(3)在多情景模拟中,2023—2035年长江经济带城乡居民食物消费总生态足迹的预测曲线存在明显差异。其中,温饱型发展路径下的食物消费总生态足迹最低,富裕型发展路径下的食物消费总生态足迹最高,可持续发展路径是实现居民营养均衡与环境友好的最佳解决方案。本研究可从优化居民膳食结构、缩小城乡膳食不平等以及实施分区管控等方面为实现可持续食物消费、促进城乡膳食公平以及保障食物安全提供科学参考。

    Abstract:

    Consumption by rural and urban residents constitutes the terminal link in the food consumption system. Taking the Yangtze River Economic Belt as a typical study area, this study employed a modified ecological footprint model based on the component approach to quantitatively analyze the spatial-temporal evolution characteristics of the food consumption ecological footprint of rural and urban residents. Additionally, a system dynamics (SD) model grounded in the shared socioeconomic pathways (SSPs) was used to predict the future development trend. The results of this study showed that: (1) From 2005 to 2022, the food consumption ecological footprint of rural and urban residents in the Yangtze River Economic Belt generally showed an increasing trend. The ecological footprint of urban residents was higher than that of rural residents, and the increase in the total ecological footprint of food consumption was also greater. Meanwhile, the dietary structure between urban and rural residents tended to be consistent, and the structural changes in the per capita ecological footprint of food consumption exhibited significant regional characteristics. (2) In terms of spatial distribution, the total ecological footprint of food consumption by urban and rural residents in 11 provinces and municipalities within the Yangtze River Economic Belt showed a pattern of “high in the east and low in the west”. The standard deviation ellipses were distributed in the direction of “southwest-northeast” and their areas were slightly decreased, which implied that the spatial heterogeneity of the total ecological footprint of food consumption by urban and rural residents was weakened. In addition, the center of gravity trajectories of the total ecological footprint of food consumption by urban and rural residents showed a tendency to move in the opposite direction. This indicated that the integrated urban-rural development in the field of food consumption within the region was further strengthened. (3) In the multi-scenario simulation analysis, there were significant differences in the predicted curves of the total ecological footprint of food consumption by urban and rural residents in the Yangtze River Economic Belt from 2023 to 2035. Among them, the total ecological footprint of food consumption by urban and rural residents was the lowest under the subsistence-oriented development pathway, and that under the affluent-oriented development pathway was the highest. Notably, the sustainable development pathway was the optimal solution to realize the nutritional balance of the residents and environmental friendliness. This study could provide scientific references for achieving sustainable food consumption, promoting urban-rural dietary equity, and ensuring food security in terms of optimizing residents’ dietary structures, reducing urban-rural dietary inequality, and implementing zoning management.

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孔凡振,陈会广.城乡居民食物消费生态足迹的时空演变及多情景模拟——以长江经济带为例.生态学报,,(). http://dx. doi. org/10.5846/stxb202501170152

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