Vegetational patterns in burned and unburned areas investigated by using the detrended fluctuation analysis

Luciano Telesca and Rosa Lasaponara

Physica A: Statistical Mechanics and its Applications, 2006, vol. 368, issue 2, 531-535

Abstract: Could the dynamics of vegetation covers be significantly influenced by fires? Is it possible to identify and quantify such effect? In order to detect fire-induced variability in vegetational dynamics, we performed a fluctuation analysis of time series of satellite SPOT-VEGETATION normalized difference of vegetation index (NDVI) data from 1998 to 2003 of two shrub-land test sites. We used the detrended fluctuation analysis (DFA), which permits the detection of persistent properties in nonstationary signal fluctuations. We analyzed two shrub-land sites, one in “healthy conditions” (fire-unaffected) and the other in “ill conditions” (fire-affected). Our results point out to the active role played by fires in increasing the persistence of the vegetation dynamics.

Keywords: Fires; Detrended fluctuation analysis; Persistence; Vegetation; Normalized difference vegetation index (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:368:y:2006:i:2:p:531-535

DOI: 10.1016/j.physa.2005.12.006

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