“The soil affect the type of trees found in a region”. Justify this statement with three examples.
The types of soil vary over place to place and is one of the major physical factors of relief which affects the type of trees found in a region. In the following ways, it affects the trees of a region:
- Sandy soil is found in semi-arid regions with less than 70 cm of rainfall. Plants having long roots for deep penetration into the soil and with thick leaves or thorns to minimise evaporation can grow here. e.g. Cactus, Acacia, Palms, Euphorbias.
- Deltaic soils are found in mangroves and tidal forests. The roots of the plants get submerged in water so those plants can survive that have hard wood and have protruding roots above the ground. Sundari trees grow in this type of soil along with Palm, Keora, Agar etc.
- Mountain soil is found at an altitude of 1000-2000 m. Trees that grow in this type of soil are tall,conical shaped with needle like leaves, e.g. Pine, Deodar, Fir, Spruce, Cedar.