CERRADO AND SAVANNAH
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In News
- Deforestation last year rose to the highest level since 2015 in Brazil’s Cerrado.
- This has prompted scientists to raise alarm over the state of the world’s most species-rich savanna, a major carbon sink that helps to stave off climate change.
About Cerrado
- Cerrado is a vast tropical savanna ecoregion of Brazil.
- The Cerrado, is one of the world’s largest savannas, is often called an “upside-down forest” because of the deep roots its plants sink into the ground to survive seasonal droughts and fires.
- Destruction of these trees, grasses and other plants in the Cerrado is a major source of Brazil’s greenhouse gas emissions, although it is far less densely forested than the more famous Amazon rainforest that it borders.
- The added destruction is particularly concerning, when considering that roughly half of the Cerrado has been destroyed since the 1970s, mostly for farming and ranching.
Savannah
- Savannah is a mixed woodland-grassland ecosystem characterized by the trees being sufficiently widely spaced so that the canopy does not close.
- The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses
Region
- The largest areas of savanna are found in Africa, South America, Australia, India, the Myanmar (Burma)–Thailand region in Asia, and Madagascar.
- In general, savannas grow in tropical regions 8° to 20° from the Equator.
Climate
- Conditions are warm to hot in all seasons, but significant rainfall occurs for only a few months each year.
- Mean annual precipitation is generally 80 to 150 cm.
- The dry season is typically longer than the wet season.
- Mean monthly temperatures are about 10 to 20 °C.