Influence of land‐use types and climatic variables on seasonal patterns of NDVI in Mediterranean Iberian ecosystems

Año Publicación:  2009
Responsable: P. Durante et al.
Journal, Volumen y páginas:
Applied Vegetation Science, 12: 177-185


P. Durante, C. Oyonarte & F. Valladares


Question: What is the influence of management on the functioning of vegetation over time in Mediterranean ecosystems under different climate conditions?

Location: Mediterranean shrublands and forests in SE Iberia (Andalusia).

Methods: We evaluated the Normalized Difference Vegetation Index (NDVI) for the 1997-2002 time series to determine phenological vegetation patterns under different historical management regimes. Three altitudinal ranges were considered within each area to explore climate × management interactions. Each phenological pattern was analysed using time series statistics, together with precipitation (monthly and cumulative) and temperature.

Results: NDVI time series were significantly different under different management regimes, particularly in highly transformed areas, which showed the lowest NDVI, weakest annual seasonality and a more immediate phenological response to precipitation. The NDVI relationship with precipitation was strongest in the summer-autumn period, when precipitation is the main plant growth-limiting factor.

Conclusions: NDVI time series analyses elucidated complex influences of land use and climate on ecosystem functioning in these Mediterranean ecosystems. We demonstrated that NDVI time series analyses are a useful tool for monitoring programmes because of their sensitivity to changes, ease of use and applicability to large-scale studies.

crossmenu linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram