YAN Meixia,ZHANG Min,GAO Yongchun,et al.Characteristics of Soil Organic Carbon Mineralization in Different Plant Communities in Typical Grasslands[J].Northern Horticulture,2022,(23):106-112.[doi:10.11937/bfyy.20221330]
典型草原不同植物群落土壤有机碳矿化特征
- Title:
- Characteristics of Soil Organic Carbon Mineralization in Different Plant Communities in Typical Grasslands
- 文献标志码:
- A
- 摘要:
- 以羊草（Leymus chinensis）群落、大针茅（Stipa grandis）群落、糙隐子草（Cleistogenes squarrosa）群落和羊草+大针茅+糙隐子草混合群落为优势种的土壤为研究对象，并以无地上植物土壤为对照，采用有机碳矿化培养的方法，研究了内蒙古锡林郭勒草原西南缘的典型草原不同植物下各粒级土壤的二氧化碳（CO2）释放特征，以期探明该地区不同优势植物下土壤有机碳矿化特征。结果表明：不同植物群落均对有机碳矿化具有激发效应，其中大针茅对有机碳矿化的激发效应最大，并且当土壤团聚体粒级相同时，大针茅下的有机碳矿化速率和累积量最高，同时，土壤有机碳（SOC）、碱解氮（AN）和酸碱度（pH）与土壤有机碳矿化量具有显著的相关关系。
- Abstract:
- Taking Leymus chinensis community,Stipa grandis community,Cleistogenes squarrosa community and Leymus chinensis + Stipa grandis + Cleistogenes squarrosa mixed community as the dominant species of soil as the research object,and taking the soil without aboveground plants as the control,the organic carbon mineralization culture method was adopted.The characteristics of carbon dioxide (CO2) emission from soil of different grain size under different plants in the typical grassland of the southwest edge of Xilingol Grassland in Inner Mongolia were studied,in order to find out the mineralization characteristics of soil organic carbon under different dominant plants in this area.The results showed that different plant communities had stimulating effects on 〖JP〗organic carbon mineralization,among which,Stipa grandis had the greatest stimulating effect on organic carbon mineralization,and when the soil aggregate size was the same,the organic carbon mineralization under Stipa grandis was the same.The rate and accumulation amount were the highest.Meanwhile,soil organic carbon,alkali-hydrolyzed nitrogen and pH had significant correlations with soil organic carbon mineralization.
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备注/Memo
第一作者简介：闫美霞（1978-），女，本科，工程师，现主要从事草地生态等研究工作。E-mail：1078928895@qq.com.责任作者：马海龙（1988-），男，硕士，高级工程师，现主要从事草地生态等研究工作。E-mail：2753463770@qq.com.收稿日期：2022-04-05