ZHANG Xue,KASIMU·Alimujiang ,ZHANG Yan,et al.Adaptive evolution and optimization of the human-land-food nexus in Xinjiang[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2026,65(02):15-26.
ZHANG Xue,KASIMU·Alimujiang ,ZHANG Yan,et al.Adaptive evolution and optimization of the human-land-food nexus in Xinjiang[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2026,65(02):15-26. DOI: 10.11714/acta.snus.ZR20250179.
Adaptive evolution and optimization of the human-land-food nexus in Xinjiang
Amid escalating synergistic pressures on population, land, and food resources, elucidating the adaptive evolution of the human-land-food nexus is crucial for regional sustainable development. Utilizing data on population, arable land, and grain in Xinjiang from 2000 to 2020, this study applied an adaptability quantification model, a four-quadrant model, a Markov transition matrix, and an obstacle degree model to reveal its spatiotemporal evolution and coordination mechanisms. The results show that: 1)From 2000 to 2020, the comprehensive development index of the coupled system increased from 0.157 8 to 0.218 5, with an average annual growth rate of 1.39%. The arable land and grain subsystems grew at rates of 1.99% and 1.90% per year, respectively, while the population subsystem grew at a lower rate of 0.32%. 2)System adaptability improved continuously, with the proportion of highly adaptable regions increasing from 20% to 31%, exhibiting an evolutionary pattern of “point breakthroughs to areal expansion”. 3)The proportion of regions in the first quadrant (high adaptability-high development) remained stable at 48%-56% and the Markov transition matrix showed a self-sustaining probability of 95%, indicating strong systemic stability. 4)From 2000 to 2020, the obstacle degrees of the arable land and grain subsystems declined from 45% and 43% to 40% and 25%, respectively. In contrast, the obstacle degree of the population subsystem rose from 12% to 35%, suggesting that population and arable land have gradually become the primary bottlenecks for coordinated development. This study provides a valuable reference for analyzing the human-land-food nexus in arid regions and offers insight to assist Xinjiang in optimizing population distribution and land-use structures under multiple resource constraints, thereby enhancing grain production resilience and fostering high-quality and sustainable regional development.
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