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Pre‐ and post‐fire behavioral trends revealed in satellite NDVI time series
Author(s) -
Telesca Luciano,
Lasaponara Rosa
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2006gl026630
Subject(s) - normalized difference vegetation index , detrended fluctuation analysis , detrended correspondence analysis , vegetation (pathology) , environmental science , time series , persistence (discontinuity) , series (stratigraphy) , disturbance (geology) , satellite , climatology , instability , resilience (materials science) , physical geography , atmospheric sciences , climate change , geography , geology , mathematics , statistics , oceanography , medicine , ordination , paleontology , geometry , geotechnical engineering , physics , pathology , scaling , mechanics , thermodynamics , aerospace engineering , engineering
Pre‐ and post‐fire vegetational dynamical behaviours in a forest site of Northern Italy were investigated, using the 1998 to 2003 time series of Normalized Difference Vegetation Index (NDVI) from SPOT‐VEGETATION sensor. The detrended fluctuation analysis (DFA) was adopted to detect persistent behaviour, in order to characterize the stability/instability properties of vegetation dynamics. Our analysis points to the following results: i) both pre‐ and post‐fire vegetation dynamics are persistent; ii) post‐fire dynamical behaviour is characterized by a larger degree of persistence; iii) a link between persistence and resilience can be identified.