干旱区生态环境知识资源中心(Arid): GIMMS NDVI time series reveal the extent, duration, and intensity of blooming desert events in the hyper-arid Atacama Desert, Northern Chile

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DOI	10.1016/j.jag.2018.11.013
	GIMMS NDVI time series reveal the extent, duration, and intensity of blooming desert events in the hyper-arid Atacama Desert, Northern Chile
	Chavez, R. O.1; Moreira-Munoz, A.1; Galleguillos, M.3,4; Olea, M.1; Aguayo, J.1; Latin, A.1; Aguilera-Betti, I.1,2; Munoz, A. A.1,4; Manriquez, H.1
通讯作者	Chavez, R. O.
来源期刊	INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
ISSN	0303-2434
出版年	2019
卷号	76 页码:193-203
英文摘要	The blooming desert, or the explosive development and flowering of ephemeral herbaceous and some woody desert species during years with abnormally high accumulated rainfall, is a spectacular biological phenomenon of the hyper-arid Atacama Desert (northern Chile) attracting botanists, ecologists, geo-scientists, and the general public from all over the world. However, the number of blooming deserts, their geographical distribution and spatio-temporal patterns have not been quantitatively assessed to date. Here, we used NDVI data from the Global Inventory Modeling and Mapping Studies (GIMMS) project to reconstruct the annual land surface phenology (ISP) of the Atacama Desert using a non-parametric statistical approach. From the reconstructed LSP, we detected the blooming deserts as positive NDVI anomalies and assessed three dimensions of the events: their temporal extent, intensity of greening and spatial extent. We identified 13 blooming deserts between 1981 and 2015, of which three (1997-98, 2002-03, and 2011) can be considered major events according to these metrics. The main event occurred in 2011, spanning 180 days between July and December 2011, and spread over 11,136 km2 of Atacama dry plains. Blooming deserts in Atacama have been triggered by the accumulation of precipitation during a period of 2 to 12 months before and during the events. The proposed three-dimensional approach allowed us to characterize different types of blooming deserts: with longer episodes or larger spatial distribution or with different greening intensities. Its flexibility to reconstruct different ISP and detect anomalies makes this method a useful tool to study these rare phenomena in other deserts in the world also.
英文关键词	Land surface phenology Remote sensing Time series npphen Extreme events Ephemeral vegetation Precipitation variability
类型	Article
语种	英语
国家	Chile
收录类别	SCI-E
WOS记录号	WOS:000457660800016
WOS关键词	LAND-SURFACE PHENOLOGY ; EL-NINO ; COASTAL DESERT ; VEGETATION ; TRENDS ; REGION ; ECOSYSTEMS ; SAHEL ; SOUTH ; LIFE
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216338
作者单位	1.Pontificia Univ Catolica Valparaiso, Inst Geog, Valparaiso, Chile; 2.Univ Austral Chile, Ctr Transdisciplinario Estudios Ambientales & Des, Valdivia, Chile; 3.Univ Chile, Fac Ciencias Agron Santiago, Santiago, Chile; 4.Univ Chile, Ctr Climate Resilience Res CR 2, Santiago 8370449, Chile
推荐引用方式 GB/T 7714	Chavez, R. O.,Moreira-Munoz, A.,Galleguillos, M.,et al. GIMMS NDVI time series reveal the extent, duration, and intensity of blooming desert events in the hyper-arid Atacama Desert, Northern Chile[J],2019,76:193-203.
APA	Chavez, R. O..,Moreira-Munoz, A..,Galleguillos, M..,Olea, M..,Aguayo, J..,...&Manriquez, H..(2019).GIMMS NDVI time series reveal the extent, duration, and intensity of blooming desert events in the hyper-arid Atacama Desert, Northern Chile.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,76,193-203.
MLA	Chavez, R. O.,et al."GIMMS NDVI time series reveal the extent, duration, and intensity of blooming desert events in the hyper-arid Atacama Desert, Northern Chile".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 76(2019):193-203.