基于水力侵蚀过程的土壤有机碳变化驱动机制研究进展  

Research Progress on Driving Mechanism of Soil Organic Carbon Change based on Hydraulic Erosion Process

作　　者：齐瑜洁 黄金权 李威闻[1] 刘小岚 刘纪根 毛治超[1] QI Yu-jie;HUANG Jin-quan;LI Wei-wen;LIU Xiao-lan;LIU Ji-gen;MAO Zhi-chao(College of Resources and Environment,Yangtze University,Wuhan 430100,China;Yangtze River Scientific Research Institute,Wuhan 430010,China;Research Center on Mountain Flood and Geological Disaster Prevention of the Ministry of Water Resources,Wuhan 430010,China)

机构地区：[1]长江大学资源与环境学院,湖北武汉430100 [2]长江水利委员会长江科学院,湖北武汉430010 [3]水利部山洪地质灾害防治工程技术研究中心,湖北武汉430010

出　　处：《土壤通报》2023年第5期1196-1204,共9页Chinese Journal of Soil Science

基　　金：国家自然科学基金项目(U19A2047,42077062)资助。

摘　　要：土壤有机碳库是陆地生态系统中影响全球碳循环格局的重要组成部分,有机碳的品质与数量成为决定土壤碳汇形成和温室气体排放的关键因素,准确把握水力侵蚀各阶段有机碳组分动态特征与变化机制有助于科学评估土壤侵蚀影响土壤碳源汇的净效应。在阐述有机碳及其组分在分散剥离-运移-沉积基本过程中的主要动态特征与运移机制的基础上,对相关研究进展进行总结,提出未来研究应从土壤团聚体入手,在定性及定量两个层面进一步深入探索水力侵蚀作用下有机碳选择性迁移与矿化机制,并将研究的重点放在不同侵蚀过程中有机碳组分与功能微生物的相互作用上来,为准确评估碳动态提供技术支撑的突破口。The soil organic carbon(C)pool is an important part of the terrestrial ecosystem that affects the global C cycle pattern.The quality and quantity of organic C have become the key factors in determining the formation of soil C pools and the emission of greenhouse gas.Grasping accurately the dynamic characteristics and changing mechanisms of organic C components in various stages of hydraulic erosion contributes to the scientific assessment of the net effect of soil erosion on soil C sources and sinks.Based on the basic process of hydraulic erosion,the main dynamic characteristics and migration mechanisms of organic C and its components in the process of detachmentmigration-deposition are expounded.It is concluded that future research should focus on soil aggregates and explore the mechanism of selective migration and mineralization of organic C under hydraulic erosion from both qualitative and quantitative levels.The research should focus on the interaction between organic C components and functional microbial components in different erosion processes,in order to provide a breakthrough for the accurate assessment of C dynamics.

关 键 词：土壤有机碳 迁移 动态机制 水力侵蚀 土壤团聚体 矿化 

分 类 号：Q142.3[生物学—生态学]