溶解性黑碳特征结构、环境行为与生态效应研究进展
收稿日期: 2025-06-06
修回日期: 2025-07-02
网络出版日期: 2025-07-03
基金资助
黄淮实验室科创专项项目(240700001)
Progress on the Characteristic Structure, Environmental Behaviors, and Ecological Effects of Dissolved Black Carbon
Received date: 2025-06-06
Revised date: 2025-07-02
Online published: 2025-07-03
Supported by
the Huanghuai Laboratory Science & Technology Innovation Project(240700001)
溶解性黑碳作为黑碳连续体的关键活性组分，其分子特征结构和环境归趋显著区别于颗粒态黑碳。溶解性黑碳可通过界面络合、氧化还原调控及生物代谢等重要途径，深度参与元素及化合物的生物地球化学循环过程。通过系统解析溶解性黑碳的结构异质性，聚焦其在多介质界面的团聚、转化和吸附等行为，阐明其通过调控元素循环（碳封存、氮还原）、矿物转化、污染物迁移转化及微生物/植物代谢等途径，深度扰动生态系统土壤团聚体与生物群落的结构，进而影响生态系统的碳汇能力和生物多样性。未来研究需突破溶解性黑碳分子指纹图谱的异构体解析、界面反应动力学原位定量及微界面动态表征等技术瓶颈，揭示溶解性黑碳—元素（污染物）耦合体系的演变规律与生态风险，为精准评估黑碳循环的生态环境风险提供理论支撑。
鄂正阳 , 丁哲 , 梅徽阳 , 张伟超 , 李海松 , 梁建军 , 李平 , 范桥辉 . 溶解性黑碳特征结构、环境行为与生态效应研究进展[J]. 地球科学进展, 2025 , 40(7) : 725 -736 . DOI: 10.11867/j.issn.1001-8166.2025.053
As a key active component of the black carbon continuum, Dissolved Black Carbon (DBC) exhibits markedly distinct molecular structural characteristics and environmental fate attributes compared with particulate black carbon. Originating from the incomplete combustion of biomass and fossil fuels, DBC is highly reactive and mobile, with colloidal particles facilitating its transport approximately three times faster than that of particulate black carbon. This enables extensive participation in biogeochemical cycles through interfacial complexation, redox regulation, and biological metabolism. These processes are integral to the Earth’s material cycles and energy transformations. This study systematically analyzed the structural heterogeneity of DBC derived from various sources, emphasizing its environmental behavior, such as aggregation influenced by cation valency and salinity, adsorption onto mineral surfaces, redox-mediated transformation of heavy metals, and photochemical reactions across soil-water-atmosphere interfaces. We further elucidated how DBC profoundly influences ecosystem structure and function by regulating elemental cycles (e.g., enhancing carbon sequestration and promoting nitrate reduction), mediating iron mineral transformation, facilitating contaminant transport and transformation, and exerting dual effects on microbial and plant metabolism. Its complex role is evident as it can serve as a nutrient source yet also induce oxidative stress or enhance heavy metal uptake in crops. However, current understanding is constrained by technical limitations in resolving molecular fingerprint isomers, quantifying interfacial reaction kinetics in situ, and dynamically characterizing micro interfacial processes. Overcoming these bottlenecks is essential to unravel the evolutionary mechanisms, interface dynamics, and ecological risks of DBC-pollutant/element coupling systems. This review synthesizes the current knowledge and aims to provide a theoretical foundation for accurately assessing the ecological and environmental impacts of black carbon cycling in the context of global change. This further highlights the need for advanced predictive models and in-situ techniques to support ecological conservation, pollution control, and sustainable environmental management.
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