元耦合下的山水林田湖草复合生态系统隐含碳流耦合研究

张燕; 官冬杰; 周李磊; 和秀娟; 朱旭森

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中国环境科学 ›› 2026, Vol. 46 ›› Issue (2) : 1114-1124.

碳排放控制

元耦合下的山水林田湖草复合生态系统隐含碳流耦合研究

张燕¹, 官冬杰², 周李磊², 和秀娟³, 朱旭森⁴

作者信息 +

The coupling of embodied carbon flows in the composite ecosystem of Mountains, Rivers, Forests, Farmlands, Lakes, and Grasslands under the metacoupling framework

ZHANG Yan¹, GUAN Dong-jie², ZHOU Li-lei², HE Xiu-juan³, ZHU Xu-sen⁴

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摘要

通过MRIO和PLE-SEM模型,测算重庆市山水林田湖草复合生态系统(CEMRFFLG)四个子系统的隐含碳,分析各子系统间在元耦合框架下的隐含碳流动,并探究隐含碳流的影响机制.结果表明:(1)2020年重庆市的CEMRFFLG的子系统中隐含碳排序为田>草>林>水,田子系统占比为68.88%.(2)重庆市的CEMRFFLG的隐含碳流入量是流出量的3.45倍,呈现出显著的“净输入型”特征.(3)直接碳流的远程系统流入量贡献率达99.28%,流出量贡献率达78.82%,呈现远距离传输为主的特征;隐含碳流则呈现出“远程输入、近程输出”的结构性特征,远程系统的流入量贡献率为85.61%,近程系统的流出量贡献率为91.36%.(4)消费水平对CEMRFFLG的隐含碳流具有最强的正向影响,路径系数为0.845.对直接碳与隐含碳进行分析比较,为重庆市的CEMRFFLG隐含碳流减排优化建议提供科学依据,为实现生态系统复合格局的绿色发展具有重要意义.

Abstract

In Chongqing's composite ecosystem of Mountains, Rivers, Forests, Farmlands, Lakes, and Grasslands (CEMRFFLG), the embodied carbon of four subsystems (farmland, grassland, forest, and water) was quantified using Multi-Regional Input-Output (MRIO) and Partial Least Squares Structural Equation Modeling (PLS-SEM) approaches. The flows of embodied carbon among these subsystems were analyzed within a metacoupling framework, and their driving mechanisms were systematically explored. The results indicated that: (1) In 2020, embodied carbon of CEMRFFLG subsystems in Chongqing ranked as farmland > grassland > forest > water, with the farmland subsystem accounting for 68.88% of the total; (2) The embodied carbon inflow to the CEMRFFLG of Chongqing was 3.45 times greater than its outflow, exhibiting a distinct net-input characteristic; (3) Direct carbon flows were characterized by inflow and outflow contribution rates from distant systems of 99.28% and 78.82%, respectively, indicating predominance of long-distance transmission. Conversely, embodied carbon flows presented a distinctive structural pattern of "remote inflows and proximate outflows," wherein distant systems contributed 85.61% of inflows and adjacent systems received 91.36% of outflows; (4) Among all factors, the consumption level showed the strongest positive influence on embodied carbon flows of CEMRFFLG, with a path coefficient of 0.845. A comparative analysis of direct and embodied carbon flows provides a scientific basis for optimizing embodied carbon flow reduction strategies in Chongqing's CEMRFFLG, offering significant implications for achieving green development of composite ecosystem patterns.

导出引用

张燕, 官冬杰, 周李磊, 和秀娟, 朱旭森. 元耦合下的山水林田湖草复合生态系统隐含碳流耦合研究[J]. 中国环境科学. 2026, 46(2): 1114-1124

ZHANG Yan, GUAN Dong-jie, ZHOU Li-lei, HE Xiu-juan, ZHU Xu-sen. The coupling of embodied carbon flows in the composite ecosystem of Mountains, Rivers, Forests, Farmlands, Lakes, and Grasslands under the metacoupling framework[J]. China Environmental Science. 2026, 46(2): 1114-1124

中图分类号： X171.1

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基金

国家自然科学基金联合基金项目(U24A20580);国家社科基金一般项目(25BJY215);国家自然科学基金专项项目(42542116);自然资源部国土空间规划监测评估预警重点实验室开放课题(LMEE-KF2024012);重庆自然科学基金创新发展联合基金项目(CSTB2023NSCQ-LZX0009)