土壤与作物2025，Vol.14Issue(2)：129-143,15.DOI:10.11689/sc.2025010602
土壤团聚体孔隙及其表征方法
Soil aggregate pores and their characterization methods
摘要
Abstract
As a core element of soil quality,the pore structure of soil aggregates profoundly influences the function of farmland ecosystems by regulating ecological processes such as water and gas transport,nutrient cycling and microbial activities.In this study,the morphological characteristics of aggregate pore space and its interactions with soil water dynamics,root interactions,carbon and nitrogen cycling,and gas exchange are systematically characterized.The inter-aggregate pore space dominates preferential water flow and gas diffusion,while micropores influence organic carbon stability and nutrient sequestration.Root growth regulates pore network reconfiguration through mechanical action and secretion,while pore structure constrains the inter-root processes and microbial activity.Traditional characterization methods are restrained by two-dimensional analysis and structural damage,which makes it difficult to resolve key features such as three-dimensional pore connectivity.Computed tomography technology enables quantitative charac-terization of pore morphology,distribution and connectivity through non-invasive 3D imaging,and could reveal the remodeling of pore structure by management measures such as tillage practices and wet-dry cycles.The current research is still facing technical bottlenecks:image resolution and threshold segmentation methods constrain the accurate analysis of pore network;multi-scale corre-lation mechanism and dynamic process monitoring are insufficient;and the wide application of synchrotron radiation technology is limited.In the future,we need to integrate 4D-CT,artificial intelligence and cross-scale modeling techniques,develop standardized image processing procedures,deepen the dynamic coupling research between pore structure and ecological functions;which could provide theoretical support for soil health management.关键词
土壤团聚体/团聚体内孔隙/团聚体间孔隙/计算机断层扫描/表征方法Key words
soil aggregate/intra-aggregate pores/inter-aggregate pores/computerized tomography/characterization method分类
农业科技引用本文复制引用
黄文智,陈学文,梁爱珍,张延,黄丹丹,刘立名,柳亚彤,张蕾..土壤团聚体孔隙及其表征方法[J].土壤与作物,2025,14(2):129-143,15.基金项目
国家重点研发计划项目(2022YFD1500103) （2022YFD1500103）
国家自然科学基金项目(41977070) （41977070）
中国科学院A类战略性先导科技专项项目(XDA28080201) （XDA28080201）
吉林省重大科技专项课题(20230302005NC) （20230302005NC）
中国科学院国际合作局国际伙伴计划(131323KYSB20210004). （131323KYSB20210004）
