林业与生态科学2025，Vol.40Issue(3)：254-261,8.DOI:10.13320/j.cnki.hjfor.2025.0029
深翻种植对华北土壤碳固存及土壤有机碳组分的影响
Effects of deep tillage on soil carbon sequestration and organic carbon components in north China
摘要
Abstract
The changes and interrelationships of soil organic carbon,nitrogen content and organic carbon components before,during and after deep tillage cultivation of Dioscorea opposita were analyzed,and the impacts of deep tillage on the soil organic carbon content and long-term sequestration were explored in the North China Plain.Wet sieving was used to classify organic carbon components by particle sizes,and potassium dichromate sulfate external heating method was used to determine the contents of soil organic carbon and its components.The results showed that:(1)Deep tillage led to the increase of the organic carbon content in both upper and deep soils,respectively;about 10 years after the cessation of deep tillage,the organic carbon content in deep soil decreased,but still higher than the soil without deep tillage cultivation;the organic carbon content in the upper soil significantly increased after the cessation of deep tillage.(2)Deep tillage increased the contents of free particulate organic carbon(FPOC)and mineral-associated organic carbon(MOC),respectively,whereas there was no increase in the content of occluded particulate organic carbon(OPOC).The FPOC content decreased after the the stop of deep tillage,while the OPOC and MOC contents increased,respectively.(3)The deep tillage induced soil nitrogen increase,which promoted the content increase and stabled sequestration of soil organic carbon.The three organic carbon components all had promoting effects on the growth of soil organic carbon sequestration,while the increase of MOC was an important reason and the main carbon component of the sustained organic carbon sequestration in deep plowed soils.Therefore,deep tillage cultivation of D.opposita could increase the soil organic carbon sink and long-term storage capacity in the farmland of North China Plain.关键词
深翻/有机碳含量/氮含量/游离状态颗粒有机碳/闭蓄态颗粒有机碳/矿物结合态有机碳Key words
deep tillage/soil organic carbon content/soil nitrogen content/free particulate organic carbon/occluded particulate organic carbon/mineral-associated organic carbon分类
农业科技引用本文复制引用
李丹丹,孙庆璇,田涵仪,刘宇师,王洋,王征..深翻种植对华北土壤碳固存及土壤有机碳组分的影响[J].林业与生态科学,2025,40(3):254-261,8.基金项目
河北省自然科学青年基金(C2019204351) （C2019204351）
国家自然科学青年基金(31901167) （31901167）
大学生创新创业训练计划资助项目(S202210086001,S202410086065X) （S202210086001,S202410086065X）
河北农业大学教学研究专题项目(2021cxcy16). （2021cxcy16）
