耕地系统增产—降污—固碳多效协同:机制、潜力及技术路径

Multi-effect Synergy of Production Increase-Pollution Reduction-Carbon Sequestration in Cultivated Land System:Mechanism,Potential and Technical Pathways

研究目的:阐释耕地系统增产—降污—固碳多效协同的科学内涵与提升机制,系统评估增产—降污—固碳潜力,拓新多效协同的技术路径。研究方法:理论分析法,归纳演绎法。研究结果:(1)增产—降污—固碳多效协同是新时代耕地系统健康、永续利用的客观要求,增产为主导,降污—增汇共同发挥生态系统多功能协同潜力;(2)耕地系统增产—降污—固碳具有高度的协同性和一致性。土壤碳汇形成中物质与能源转化,既是降污自净过程,也是土壤肥力提升过程;(3)耕地系统增产—降污—固碳多效协同潜力巨大,分别可达1.40亿t/a、720.0万t/a和1.49亿t/a,但多效协同应因地制宜、突出重点,满足适应性管理和永续利用准则;(4)未来应充分利用生产障碍消减技术、农艺管理革新技术和环境材料交互微生物强化技术,稳妥推进多效协同。研究结论:耕地系统增产—降污—固碳多效协同,既夯实自主粮食增产,又促进生态健康与固碳,有力推动耕地保护转型和技术创新。

The purposes of this study are to interpret the scientific connotation and promotion mechanism of multi-effect synergy for production increase-pollution reduction-carbon sequestration in cultivated land system,to systematically evaluate its potential,and to explore new technical pathways for multi-effect synergy.The research methods include theoretical analysis as well as induction and deduction.The results are as follows.1)The multi-effect synergy of production increase,pollution reduction and carbon sequestration is the objective requirement for healthy and sustainable utilization of cultivated land system in the new era.Production increasing is the leading factor,while pollution reduction and carbon sequestration together to realize the potential of ecological service function of cultivated land system.2)Cultivated land system presents a high degree of synergy and consistency in the production increase,pollution reduction and carbon sequestration.The transformation of matter and energy in the formation of soil carbon sinks is not only a process of pollution reduction and self-purification,but also a process of soil fertility improvement.3)The multi-effect synergistic potential of production increase,pollution reduction and carbon sequestration in cultivated land system is enormous,reaching 140 million tons per year,7.20 million tons per year,and 149 million tons per year,respectively.However,multi-effect synergy should be tailored to local conditions,highlight key points,and meet the criteria of adaptive management and sustainable use.4)In the future,production barrier reduction technology,agronomic management innovation technology,and environmental material interaction and microbial enhancement technology should be fully utilized to steadily promote multi-effect synergy.In conclusion,the multi-effect synergy of production increase,pollution reduction and carbon sequestration in cultivated land system not only densifies the independent grain production increase,but also promotes ecological health and carbon sequestration,further effectively accelerating the transformation of cultivated land protection and technological innovation.