内蒙古农业大学学报（自然科学版）2026，Vol.47Issue(5)：26-35,10.DOI:10.16853/j.cnki.1009-3575.2026.05.004
贵州高海拔地区不同林型土壤碳库特征与稳定性影响因素研究
A Study on Soil Carbon Pool Characteristics and Stability Influencing Mechanisms of Different Forest Types in High-altitude Areas of Guizhou
摘要
Abstract
This study aimed to reveal the heterogeneity of soil carbon pools among different forest ecosystems in the high-altitude re-gions of Guizhou,and to elucidate the factors influencing their stability,thereby providing a scientific basis for ecological function assessment and carbon sink management in this area.Soils from three typical forest types—broad-leaf mixed forest(KYH),conifer-broad-leaf mixed forest(ZKH),and coniferous pure forest(ZYC)—in the high-altitude region of Weining,Guizhou,were selected as research objects.The contents of soil organic carbon and its components were measured,and the soil carbon pool quality indices were calculated to characterize the carbon pool properties and identify their stability-controlling factors.The results showed that the soil depth,rather than forest type,was the dominant factor driving the variation in soil organic carbon and its components across ma-jor forest ecosystems in the high-altitude region of Guizhou.For different forest types,the soil depth alone explained more than 80%of the variation in soil labile organic carbon content.The soil carbon pool quality indices did not differ significantly among forest types,but the soil carbon management index(CMI)increased progressively along the successional gradient,indicating higher car-bon pool stability in broadleaf mixed forests.The accumulation of easily oxidizable organic carbon(EOC)may be a key factor influ-encing the stability of soil carbon pools in high-altitude forests of Guizhou.In summary,soil stratification determines the spatial dis-tribution of soil organic carbon and its components,while forest succession indirectly affects carbon pool quality by regulating the processes of labile organic carbon dynamics,thereby controlling the direction and efficiency of forest soil carbon cycling.关键词
土壤碳库质量/土壤碳库管理指数/土壤易氧化有机碳/碳库稳定性Key words
Soil carbon pool quality/Soil carbon pool management index/Soil easily oxidizable organic carbon/Stabilization mecha-nisms分类
农业科技引用本文复制引用
陈进,任廷森,丁访军,袁丛军..贵州高海拔地区不同林型土壤碳库特征与稳定性影响因素研究[J].内蒙古农业大学学报（自然科学版）,2026,47(5):26-35,10.基金项目
贵州省科技厅计划项目(黔科合基础-ZK[2022]一般241) （黔科合基础-ZK[2022]一般241）
2024年森林资源管理补助资金项目(贵州省林业碳汇监测技术研究) （贵州省林业碳汇监测技术研究）
2025年森林资源管理补助资金项目(贵州森林固碳能力及碳汇监测体系建设与研究) （贵州森林固碳能力及碳汇监测体系建设与研究）
