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DOI10.1016/j.catena.2018.10.003
The waterlogged volcanic ash soils of southern Chile. A review of the "Nadi" soils
Zuniga, Felipe1,2,3; Dec, Dorota2,3; Valle, Susana R.2,3; Thiers, Oscar3,4; Paulino, Leandro3,5; Martinez, Oscar3,6; Seguel, Oscar3,7; Casanova, Manuel7; Pino, Mario8,9; Horn, Rainer10; Dorner, Jose2,3
发表日期2019
ISSN0341-8162
EISSN1872-6887
卷号173页码:99-113
英文摘要

The Nadi soils (NS) is a local name for soils occurring at southern Chile (38 degrees to 43 degrees S) covering around 4250 km(2) hectares. Derived from volcanic materials, have discontinuous iron-cemented layers (the placic horizon) which favour waterlogging during the winter. The studies of iron-cemented layers are predominant in USA and Taiwan, but we provide an overview of NS research to position them within the group of soils with iron-cemented layers, and to highlight the distribution, formation, processes, and the relevance of placic horizons in land use and ecosystem services that NS provide.


We surveyed the worldwide literature of iron-cemented layers to put the Chilean soils with placic horizons. A fraction analysis was conducted in a longitudinal transect of five NS to evaluate the Si, Al, Fe and Mn reactive pools in the soil. A principal component analysis (PCA) was performed to separate the soil Series. Finally, a comparison between chemical properties of placic horizons and bog iron in Chile with other soils in the world was realised.


Further south, the Chilean NS have more SOC in surface horizons thus enabling more intensive iron trans location with the reactive soils pools decreasing with the latitude. The iron-cemented layers probably consist of goethite, ferrihydrite and gibbsite. A 51.8% of bog iron are compound of Fe while only 36.2% in the placic horizon, which also have 12.1% of Al2O3 in the molecular structure. Land uses in NS vary, from forestry to archaeology coexisting in these soils. In agricultural terms, we suggest a soil depth of 50 cm as the limit to drainage, shallower depth is at risk of severe soil degradation. Finally, several research questions are posed which may help to define the use and importance of the Nadi ecosystem to the people who use the soils currently and to future generations within the context of climate change scenario.


WOS研究方向Geology ; Agriculture ; Water Resources
来源期刊CATENA
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/93121
作者单位1.Univ Austral Chile, Fac Agr Sci, Grad Sch, Valdivia, Chile;
2.Univ Austral Chile, Fac Ciencias Agr, Inst Ingn Agr & Suelos, Valdivia, Chile;
3.Univ Austral Chile, Ctr Invest Suelos Volcan CISVo, Valdivia, Chile;
4.Univ Austral Chile, Fac Ciencias Forestales & Recursos Nat, Inst Basque & Soc, Valdivia, Chile;
5.Univ Concepcion, Fac Agron, Dept Suelos & Recursos Nat, Concepcion, Chile;
6.Univ Austral Chile, Fac Ciencias, Inst Bioquim & Microbiol, Valdivia, Chile;
7.Univ Chile, Fac Ciencias Agron, Dept Ingn & Suelos, Santiago, Chile;
8.Univ Austral Chile, Inst Ciencias Tierra, Valdivia, Chile;
9.Univ Austral Chile, Nucleo Estudios Transdisciplinarios Cuaternario S, Valdivia, Chile;
10.Univ Kiel, Inst Plant Nutr & Soil Sci, Olshausenstr 40, D-24118 Kiel, Germany
推荐引用方式
GB/T 7714
Zuniga, Felipe,Dec, Dorota,Valle, Susana R.,et al. The waterlogged volcanic ash soils of southern Chile. A review of the "Nadi" soils[J],2019,173:99-113.
APA Zuniga, Felipe.,Dec, Dorota.,Valle, Susana R..,Thiers, Oscar.,Paulino, Leandro.,...&Dorner, Jose.(2019).The waterlogged volcanic ash soils of southern Chile. A review of the "Nadi" soils.CATENA,173,99-113.
MLA Zuniga, Felipe,et al."The waterlogged volcanic ash soils of southern Chile. A review of the "Nadi" soils".CATENA 173(2019):99-113.
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