Science, Space and Technology News 2023
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The research team, consisting of mathematicians, geographers, biologists, and earth scientists, used satellite images from 2000 to 2020 to observe changes in vegetation over time in this area. They plotted 450 data points and developed a mathematical model to remove artificial variations and seasonality, and used statistical analysis to ensure that they were only analysing areas with a significant trend.
“We started with a very local area to study the impact of mining on local vegetation,” explained Eustace Barnes, a geographer in the Cavendish Laboratory’s Environmental Physics Group, which ran the research. “To our surprise, the data was suggesting that the area was greening instead of browning. So, we zoomed out and realized other areas were also greening on a large scale. When we went to check on the ground, we observed a similar trend.
“The Pacific slope provides water for two-thirds of the country, and this is where most of the food for Peru is coming from too,” said Barnes. “This rapid change in vegetation, and to water level and ecosystems, will inevitably have an impact on water and agricultural planning management.”
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