干旱区生态环境知识资源中心(Arid): Association between soil fauna activity and piping in contrasted environments

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	Association between soil fauna activity and piping in contrasted environments
	Sole Benet, A.; Alvera, B.; Puigdefabregas, J.
通讯作者	Benet, AS
来源期刊	CUADERNOS DE INVESTIGACION GEOGRAFICA
ISSN	0211-6820
EISSN	1697-9540
出版年	2011
卷号	37 期号:1 页码:79-97
英文摘要	Pedological evidences and geomorphic reasons are presented to help determining if soil fauna acts as triggering agent of piping in contrasted environments. The evidences are based on soil properties, essentially soil morphology-micromorphology, but also on soil physics, chemistry and mineralogy. In the edges near the earthen banks of old, abandoned, agricultural terraces in SE Spain, clear sequences of fauna activity (both mesofauna, e.g. tarantules, and macrofauna, e.g. rabbits and foxes) can be seen in relation with piping processes under flooding conditions (once every 4 years in average). Pipe diameters start with a few centimetres (with an estimated sediment production below I t ha(-1) y(-1)) and end up with over 0.5 m pipes which usually collapse and become gully heads, causing the partial destruction of large terraces of about] ha (with an estimated sediment production over 100 t ha(-1) y(-1)). However in the Central Pyrenees, in hillslopes up to 30 degrees covered by alpine meadow (e.g. Festuca eskia), a dense network of pipes of a few centimetres of diameter in the boundary between A and B horizons, has its origin in a well developed soil aggregation mainly due to freeze-thaw processes. Once created, this important macroporosity is used by melting waters and by voles (genus Pitymys) to form pipes. Daily subsurface flow measured in one of such pipes is over 9000 L/day and the estimated sediment production at catchment scale is 0.015 t ha(-1) y(-1). It is discussed that in the first case soil fauna has a triggering role for piping. However, in the second case piping is only enhanced by fauna activity from an already existent network of soil macropores. In a third case, within the Tabernas desert also in semiarid SE Spain, soil fauna doesn't seem to play any relevant role in piping production.
英文关键词	semiarid alpine meadows macrofauna soil micromorphology
类型	Article
语种	西班牙语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000421515000005
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329823
作者单位	[Sole Benet, A.; Puigdefabregas, J.] CSIC, Estac Expt Zonas Aridas, Carretera Sacramento S-N, Almeria 04120, Spain; [Alvera, B.] CSIC, Inst Pirenaico Ecol, Huesca, Spain
推荐引用方式 GB/T 7714	Sole Benet, A.,Alvera, B.,Puigdefabregas, J.. Association between soil fauna activity and piping in contrasted environments[J],2011,37(1):79-97.
APA	Sole Benet, A.,Alvera, B.,&Puigdefabregas, J..(2011).Association between soil fauna activity and piping in contrasted environments.CUADERNOS DE INVESTIGACION GEOGRAFICA,37(1),79-97.
MLA	Sole Benet, A.,et al."Association between soil fauna activity and piping in contrasted environments".CUADERNOS DE INVESTIGACION GEOGRAFICA 37.1(2011):79-97.