沼泽
土壤碳
湿地
排水
泥炭
环境科学
溶解有机碳
总有机碳
分馏
环境化学
碳纤维
碳循环
化学
农学
土壤科学
生态学
土壤水分
生态系统
生物
材料科学
有机化学
复合材料
复合数
作者
Chengzhu Liu,Simin Wang,Erxiong Zhu,Juan Jia,Yunpeng Zhao,Xiaojuan Feng
出处
期刊:Geoderma
[Elsevier]
日期:2021-12-01
卷期号:404: 115343-115343
被引量:12
标识
DOI:10.1016/j.geoderma.2021.115343
摘要
Drainage-induced changes in wetland soil organic carbon (SOC) composition and origin are poorly investigated compared to SOC stocks. Here, using soil fractionation and neutral sugars, we find that long-term drainage increased both plant- and microbial-dominated (i.e., light and mineral-associated, respectively) fractions in a fen while microbial residues increased at the expense of plant residues in a drained bog, accompanied by divergent changes of SOC contents. These findings highlight stimulated soil “microbial carbon pump” in drained wetlands, whose efficiency deserves further investigation related to wetland SOC persistence.
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