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Effects of dissolved organic matter on soil aggregate dynamics using rare earth oxides as tracers in A Japanese Andisol

文献类型：期刊论文

作者Wang, Yike1; Asano, Maki2; Huang, Yuanyuan; Tamura, Kenji2; Teni, Geer1; Gong, Weifan1; Jiang, Qi1
刊名PLANT AND SOIL
出版日期2024-04-30
卷号N/A
关键词Andisol Rare earth oxides Aggregate Tracers Dissolved organic matter
DOI10.1007/s11104-024-06695-7
产权排序1
文献子类Article ; Early Access
英文摘要Background and aimsDissolved organic matter (DOM) stands out as a highly active component within the organic matter pool. It is hypothesized to play a crucial role by adsorbing onto minerals and serving as a precursor for soil aggregates. However, the impact of DOM substrate types and addition levels on the intricate dynamics of soil aggregates remains elusive.MethodsA 28-day short-term incubation experiment was conducted to investigate the responses of a Japanese Andisol to different DOM substrates, exploring the influence of three DOM substrates and two concentration levels. REOs concentrations in three aggregate fractions were measured on 0, 7, 14, and 28 days of incubation to calculate the aggregates transformation paths and relative aggregate change.ResultsDOM addition significantly increased aggregate stability in Andisols soil, evident in the elevated mean weight diameter (MWD) compared to the control (CK) treatment. The change of aggregate stability during incubation is determined by both DOM types and addition levels. The N-Acetyl-D( +)-Glucosamine (NADG) treatment, peaking at 14 days, whereas the vanillin (VAN) treatment reaching the highest MWD value before incubation (0 days). The increase in aggregate stability was reflected in the transformation paths of aggregates. NADG treatment, VAN treatment, and the NADG&VAN (MIX) mixture all contributed to reduced macroaggregate breakdown and inhibited the microaggregates breakdown. Furthermore, the relative changes in aggregate turnover exhibited varying trends across treatments. Regarding macroaggregate dynamics, the addition of vanillin, especially in the 100%VAN and 100%MIX treatments, significantly enhanced macroaggregate formation, with an increase of over 30% in the 100%MIX treatment after 28 days. Microaggregate dynamics varied among treatments. In the 100%NADG and 100%VAN treatments, there was an initial increase from 0 to 7 days, succeeded by a decrease from 7 to 28 days. The 50%VAN and 50%MIX treatments exhibited an increasing trend from 0 to 14 days, followed by a decrease from 14 to 28 days.ConclusionOverall, these findings highlight the important role of DOM in aggregate dynamics and suggest that the types and addition levels of DOM can significantly impact soil aggregate turnover pathways.
WOS关键词FRACTIONS ; TURNOVER ; CARBON ; STABILITY ; LITTER ; STATE ; QUALITY ; INPUTS
WOS研究方向Agriculture ; Plant Sciences
语种英语
WOS记录号WOS:001209543700001
出版者SPRINGER
源URL[http://ir.igsnrr.ac.cn/handle/311030/204795]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Wang, Yike; Huang, Yuanyuan
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Tsukuba, Grad Sch Sci & Technol, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058572, Japan
3.Univ Tsukuba, Fac Life & Environm Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058572, Japan
推荐引用方式
GB/T 7714		 Wang, Yike,Asano, Maki,Huang, Yuanyuan,et al. Effects of dissolved organic matter on soil aggregate dynamics using rare earth oxides as tracers in A Japanese Andisol[J]. PLANT AND SOIL,2024,N/A.
APA Wang, Yike.,Asano, Maki.,Huang, Yuanyuan.,Tamura, Kenji.,Teni, Geer.,...&Jiang, Qi.(2024).Effects of dissolved organic matter on soil aggregate dynamics using rare earth oxides as tracers in A Japanese Andisol.PLANT AND SOIL,N/A.
MLA Wang, Yike,et al."Effects of dissolved organic matter on soil aggregate dynamics using rare earth oxides as tracers in A Japanese Andisol".PLANT AND SOIL N/A(2024).

入库方式： OAI收割

来源：地理科学与资源研究所

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