1 No.4 Exploration Institute of Geology and Mineral Resources, Weifang 261021, China
2 Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China
3 College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
4 School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
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文章历史+
Received
Published
Revised
2025-03-26
2026-02-28
2025-12-02
Online Date
2026-05-30
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摘要
为在全球气候变化和碳循环研究的宏观背景下,深入探讨并准确分析区域碳储量的动态变化,同时对其未来趋势进行合理预测。通过耦合PLUS(patch-generating land use simulation model)模型与InVEST(integrated valuation of ecosystem services and trade-offs)模型,探讨了2010—2022年山东半岛城市群中代表性城市——潍坊市的碳储量时空演变规律,模拟了自由发展、耕地优先、发展优先、绿色优先这4种情境下2030年潍坊市碳储量的分布特征,同时使用XGBOOST+SHAP模型分析了潍坊市碳储量的驱动因素。研究结果表明:2010年至2022年潍坊市碳储量呈现出下降趋势,由2010年的16.56×106 t下降至2020年的15.98×106 t,主要原因为耕地面积的下降与不透水地面的扩张;在多情景模拟下,耕地优先情景下2030年碳储量总量最大,凸显了耕地作为重要碳汇的潜力及耕地保护策略的关键作用。而绿色优先情景略优于自由发展情景,通过促进林地发展增强固碳能力;发展优先情景下碳储量最小。温度和坡度对潍坊市碳储量的贡献较大,GDP和人口密度则对碳储量具有削弱作用,表明经济增长和城市扩张可能进一步加剧碳储量下降趋势。研究成果不仅揭示了城市群地区人类活动与自然生态系统间的复杂互动,还为制定科学合理的土地利用规划与碳减排策略提供了坚实的数据与理论支撑。
Abstract
To examine regional carbon-stock dynamics within the broader context of global climate change and carbon-cycle processes, the PLUS (patch-generating land use simulation) model was coupled with the InVEST (integrated valuation of ecosystem services and trade-offs) model to quantify the spatiotemporal evolution of carbon storage in Weifang, a representative city within the Shandong Peninsula urban agglomeration, from 2010 to 2022. Carbon-storage patterns for 2030 were simulated under four scenarios—baseline development, cropland-prioritized development, urban-development-prioritized growth, and green-oriented development. The drivers shaping carbon-storage variation were further identified using XGBOOST (extreme gradient boosting) model integrated with SHAP (shapley additive explanations). Carbon storage in Weifang exhibited a persistent decline between 2010 and 2022, decreasing from 16.56×106 t in 2010 to 15.98×106 t in 2020. This reduction primarily resulted from the loss of cropland and the expansion of impervious surfaces. Among the simulated scenarios, the cropland-prioritized scenario produced the highest carbon-storage total in 2030, underscoring both the carbon-sink capacity of cropland and the critical importance of cropland-protection strategies. The green-oriented scenario performed slightly better than the baseline due to enhanced carbon sequestration associated with forest expansion, whereas the urban-development-prioritized scenario yielded the lowest carbon storage. Temperature and slope emerged as the dominant contributors to carbon-storage variation, while GDP and population density exerted negative influences, indicating that economic growth and urban expansion may further intensify the decline in carbon storage. Overall, the findings reveal complex interactions between anthropogenic activities and natural ecosystems within urban-agglomeration contexts and provide a robust scientific basis for formulating land-use planning and carbon-mitigation strategies.
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