干旱区研究2026，Vol.43Issue(9)：1886-1900,15.DOI:10.13866/j.azr.2026.09.08
土壤钙的形态特征、生物地球化学循环及其固碳调控机制
Soil calcium speciation,biogeochemical cycling,and the regulation of carbon sequestration
摘要
Abstract
Calcium(Ca)is abundant in soils and performs multiple ecological functions beyond its role as an es-sential plant nutrient.However,the different forms of soil Ca,the biogeochemical cycling of Ca,and the role of Ca in regulating soil organic carbon sequestration remain poorly understood.This article reviews the species and sources of soil Ca and examines how they affect SOC stabilization through abiotic pathways such as cation bridg-ing,aggregate cementation,Ca-Fe-organic carbon(Ca-Fe-OC)ternary complex formation,and carbonate adsorp-tion and precipitation.Biotic pathways include effects on plant growth,carbon inputs,and shifts in microbial com-munity composition and metabolism.Further,we compared extraction methods for different soil Ca pools,includ-ing water-soluble,exchangeable,carbonate-associated,mineral-bound,and organically complexed Ca,to clarify their applicability and limitations.The key areas for future study include mapping the global distribution of soil Ca species,understanding the roles of exchangeable Ca and CaCO3 in soil aggregation,exploring the combined effects of Ca,Fe,and Al on carbon stabilization,and clarifying the dual roles of Ca in soil organic matter decom-position and stabilization.关键词
钙形态/钙循环/碳酸钙/阳离子桥接/土壤团聚体/有机碳/全球变化Key words
calcium species/calcium cycling/calcium carbonate/cation bridging/soil aggregates/soil organic carbon/global change引用本文复制引用
冯文婷,王著峰,齐文嘉,邹晓明,井新,邢邓春,董世魁,王玉刚..土壤钙的形态特征、生物地球化学循环及其固碳调控机制[J].干旱区研究,2026,43(9):1886-1900,15.基金项目
新疆维吾尔自治区重点研发项目(2024B03024-1) （2024B03024-1）
自治区"天山英才"培养计划(2023TSYCLJ0048) （2023TSYCLJ0048）
国家自然科学基金项目(42371126,32672173) （42371126,32672173）
