DOI: 10.1038/s41561-019-0500-x
论文题名: Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming
作者: Lacroix P. ; Dehecq A. ; Taipe E.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2020
卷: 13, 期: 1 起始页码: 56
结束页码: 60
语种: 英语
英文关键词: agricultural intensification
; coastal zone
; desertification
; irrigation system
; kinematics
; landslide
; satellite altimetry
; traditional agriculture
; Peru
英文摘要: Intensification of agriculture leads to stress on the environment and subsequently can have strong societal and ecological impacts. In deserts, areas of very high sensitivity to land-use changes, these local-scale impacts are not well documented. On the arid southwestern coast of Peru, several vast irrigation programmes were developed in the 1950s on the flat detritic plateau surrounding narrow valleys to supply new farming areas. We document the long-term effects of irrigation on the erosion of arid deserts in the Vitor and Siguas valleys, south Peru, using 40 yr of satellite data. We demonstrate that irrigation initiated very large slow-moving landslides, affecting one-third of the valleys. Their kinematics present periods of quiescence and short periods of rapid activity, corresponding to landslide destabilization by their headscarp retrogression. This analysis suggests that the landslide motion continues long after their initiation by irrigations. Those landslides affect the fertile valley floors, leading to the destruction of villages and agricultural areas. We conclude that modern intensive farming can strongly impact traditional agriculture in desert areas where water management is particularly critical. © 2019, The Author(s), under exclusive licence to Springer Nature Limited. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169632
Appears in Collections: 气候变化与战略
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作者单位: ISTerre - Université Grenoble Alpes, IRD, CNRS, IFSTTAR, Université Savoie Mont Blanc, Grenoble, France; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; INGEMMET, Lima, Peru
Recommended Citation:
Lacroix P.,Dehecq A.,Taipe E.. Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming[J]. Nature Geoscience,2020-01-01,13(1)