气候变化领域集成服务门户(CCPortal): Aggregate formation and organo-mineral association affect characteristics of soil organic matter across soil horizons and parent materials in temperate broadleaf forest

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DOI	10.1007/s10533-020-00652-z
	Aggregate formation and organo-mineral association affect characteristics of soil organic matter across soil horizons and parent materials in temperate broadleaf forest
	Vormstein S.; Kaiser M.; Piepho H.-P.; Ludwig B.
发表日期	2020
ISSN	0168-2563
起始页码	169
结束页码	189
卷号	148 期号:2
英文摘要	Precise assessment of soil organic carbon (OC) storage requires understanding of soil type and depth specific differences in organic matter (OM) stabilization. Therefore, we aimed to analyze OC dynamics down the soil profile and to clarify the effect of depth on the importance of aggregate formation and mineral adsorption for OC storage in mature beech forest soils developed from different parent materials. Aggregate size and density fractions were separated from samples of top and subsoil horizons, which were quantified and analyzed by infrared spectroscopy. We also determined the microbial biomass C (Cmic) and the amount of C decomposed within incubation experiments (CO2-C) for the bulk soil samples. OC stabilized via aggregate formation and mineral association significantly increased with soil depth. However, this stabilized pool seemed to fuel the labile OM stronger in the subsoil than in the topsoil because the CO2-C/SOC and CO2-C/Cmic ratios increased with depth. Measured differences in the magnitude of the detected stabilization and destabilization patterns were attributed to parent material and soil horizon, indicating pronounced spatial and vertical heterogeneity in the contribution of soils under temperate broadleaf forest to terrestrial C sequestration. Considering such site and depth specific differences will improve assessment and modelling of soil OC storage for areas covered with the same forest type but with high pedogenetic diversity. © 2020, Springer Nature Switzerland AG.
英文关键词	Aggregate size fraction; Density fraction; Forest soil; Soil genetic horizons; Soil organic matter stabilization; Soil parent material
语种	英语
scopus关键词	broad-leaved forest; forest soil; parent material; pedogenesis; soil aggregate; soil horizon; soil organic matter; soil stabilization; soil type; subsoil; temperate forest; Fagus
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153158
作者单位	Department of Environmental Chemistry, University of Kassel, Nordbahnhofstr. 1a, Witzenhausen, 37213, Germany; Department of Agronomy and Horticulture, University of Nebraska - Lincoln, 202 Keim Hall, Lincoln, NE 68583, United States; Institute of Crop Science, University of Hohenheim, Biostatistics Unit, Fruwirthstr. 23, Stuttgart, 70599, Germany
推荐引用方式 GB/T 7714	Vormstein S.,Kaiser M.,Piepho H.-P.,et al. Aggregate formation and organo-mineral association affect characteristics of soil organic matter across soil horizons and parent materials in temperate broadleaf forest[J],2020,148(2).
APA	Vormstein S.,Kaiser M.,Piepho H.-P.,&Ludwig B..(2020).Aggregate formation and organo-mineral association affect characteristics of soil organic matter across soil horizons and parent materials in temperate broadleaf forest.Biogeochemistry,148(2).
MLA	Vormstein S.,et al."Aggregate formation and organo-mineral association affect characteristics of soil organic matter across soil horizons and parent materials in temperate broadleaf forest".Biogeochemistry 148.2(2020).