Estimation of natural vegetation phenology metrics using time series EVI over Jharkhand state, India

ABSTRACT

         This study used 18 years (2001–2018) of Moderate Resolution Imaging Spectroradiometer-based Enhanced Vegetation Index products over Jharkhand state to extract phenology metrics based on Harmonic Analysis of the Time-Series algorithm. Results revealed that majorly Start of Season (SoS) occurred during April to June, End of Season (EoS) during December to February, and Peak of Season (PoS) during August to September in the forested areas. Trend analysis of SoS, PoS and EoS revealed advancement in 3891 Km², 2627 Km², and 3486 Km² and delay in 5447 Km², 5953 Km², and 8265 Km² of the study area.

KEYWORDS:

• Time series EVI
• phenology
• HANTS
• inflection points
• Mann–Kendall test
• Sen’s slope

Disclosure statement

No potential conflict of interest was reported by the authors.