气候变化领域集成服务门户(CCPortal): Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming

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DOI	10.1038/s41561-019-0500-x
	Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming
	Lacroix P.; Dehecq A.; Taipe E.
发表日期	2020
ISSN	17520894
卷号	13 期号:1
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.
语种	英语
scopus关键词	agricultural intensification; coastal zone; desertification; irrigation system; kinematics; landslide; satellite altimetry; traditional agriculture; Peru
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124536
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
推荐引用方式 GB/T 7714	Lacroix P.,Dehecq A.,Taipe E.. Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming[J],2020,13(1).
APA	Lacroix P.,Dehecq A.,&Taipe E..(2020).Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming.Nature Geoscience,13(1).
MLA	Lacroix P.,et al."Irrigation-triggered landslides in a Peruvian desert caused by modern intensive farming".Nature Geoscience 13.1(2020).