Analysing satellite data spanning the past 20 years, the research team based at the Cavendish Laboratory in Cambridge examined how vegetation has been changing along the Pacific coast of Peru and northern Chile. This area is known for its unique and delicate arid and semi-arid environments.
The analysis revealed that certain areas experienced positive vegetation growth, known as greening, while others displayed negative trends, referred to as browning. Unsurprisingly, the changes in vegetation are influenced by things like farming and urban development or change in land use practices.
But more interestingly this study, published in MDPI Remote Sensing, revealed the discovery of a huge section of the West Slope of the Andes undergoing significant greening in the past 20 years. This section, which extends from Northern Peru to Northern Chile, spanning a length of about 2000km, has seen its vegetation growing significantly over time. This greening trend varies with altitude, with different vegetation types at different elevations.
Read more at: University of Cambridge
Exaggerated 3D model of the Peruvian Andes with an overlay of the greening strip, the green area represents an increase in the Enhanced Vegetation Index with darker areas corresponding to a larger relative greening. (Photo Credit: Hugo Lepage, Cavendish Laboratory)