生态与农村环境学报2026，Vol.42Issue(3)：405-411,7.DOI:10.19741/j.issn.1673-4831.2025.0231
林下蚯蚓养殖对杨树人工林土壤有机碳含量和组成的影响
Effects of Understory Earthworm Cultivation on the Content and Composition of Soil Organic Carbon in Poplar Plantations
摘要
Abstract
This study explores the impacts of understory earthworm cultivation on the content and composition of soil or-ganic carbon(SOC)in poplar plantations,providing insights for multifunctional forest management that balances timber production and carbon sequestration.The experiment was conducted in a 7-year-old poplar plantation at Malanghu Forest Farm in Sihong County,Jiangsu Province,with four treatments:control(CK),earthworm inoculation(T1),surface ap-plication of cattle manure(T2),and combined cattle manure application and earthworm inoculation(T3).We analyzed soil physicochemical properties,aggregate size distribution and stability,soil organic carbon content(SOC)and its frac-tions—including particulate organic carbon(POC),mineral-associated organic carbon(MAOC).Structural equation modeling(SEM)was employed to evaluate the relative contributions of earthworms and cattle manure to size distribution of soil aggregates,SOC content and its fractions,and soil properties.The results show that:(1)Compared with CK,both T2 and T3 significantly increased the proportions of large macroaggregates and small macroaggregates,while decreasing the proportions of microaggregates and silt-clay fractions,with the most pronounced changes observed in T3.Additionally,all treatments significantly increased the mean weight diameter(MWD)of aggregates,with T3 exhibiting the highest MWD value.(2)In contrast to CK,only T3 treatment simultaneously increased the contents of POC,MAOC,and SOC.(3)Across all treatments,the MAOC/SOC ratio consistently exceeded the POC/SOC ratio,though neither ratio differed significantly among treatments.SEM results indicate that earthworms and cattle manure directly affected soil large macro-aggregates,small macroaggregates,POC,MAOC,SOC,total nitrogen(TN),and total phosphorus(TP).The synergis-tic effect of T3 induced the most significant SOC accrual and stabilization,suggesting that understory earthworm cultivation can enhance SOC accumulation and stabilization in poplar plantations.These findings provide a theoretical basis for sus-tainable plantation management aimed at optimizing carbon sequestration efficiency.关键词
林下蚯蚓养殖/杨树人工林/土壤有机碳Key words
understory earthworm cultivation/poplar plantation/soil organic carbon分类
农业科技引用本文复制引用
杨立青,刘帅,吴诗婷,王国兵..林下蚯蚓养殖对杨树人工林土壤有机碳含量和组成的影响[J].生态与农村环境学报,2026,42(3):405-411,7.基金项目
国家重点研发计划(2021YFD220040203) （2021YFD220040203）
江苏省林业局揭榜挂帅项目(LYKJ[2022]01) （LYKJ[2022]01）
