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SAI INTERNATIONAL SCHOOL, BHUBANESWAR.

                                Class VIII: SOCIAL STUDIES – GEOGRAPHY

                 CHAPTER - 2- LAND, SOIL, WATER, NATURAL VEGETATION AND
                                             WILDLIFE RESOURCES

                                               (VIRTUAL CLASSES)


        NOTES FOR CHAPTER-2- Land, Soil, Water, Natural Vegetation and Wildlife Resources


        SUBTOPIC- DISTRIBUTION OF NATURAL VEGETATION:


         Distribution of Natural Vegetation:

            •  The growth of vegetation depends on temperature and moisture.
            •  The major types of vegetation of the world are
                   o  Forests
                          ▪  are associated with areas having abundant water supply
                          ▪  have heavy rainfall and huge trees
                   o  Depending upon when they shed their leaves, the types of forests are
                          ▪  Evergreen
                                 ▪  do not shed their leaves all at the same time, hence they always
                                     remain green
                          ▪  Deciduous
                                 ▪  shed their leaves in dry season to conserve loss of moisture through
                                     transpiration
                          ▪  Mostly Evergreen and Deciduous forests, that are the rich source of timber
                              and forest produce, are found in India.
                          ▪  In Himalayan region of India mixed forest, such as taiga, are found according
                              to their altitude where evergreen forest and deciduous species are found.
                          ▪
                   o  Grasslands
                          ▪  are areas having short stunted trees and grasses
                          ▪  grow in the regions of moderate rainfall
                          ▪  The size of trees and their density reduces as the amount of moisture
                              decreases.
                   o  Thorny shrubs
                          ▪  grow in dry areas of low rainfall
                          ▪  have deep roots and leaves with thorny and waxy surface that helps reduce
                              loss of moisture through transpiration
                   o  Tundra vegetation
                          ▪  found in cold Polar Regions
                          ▪  comprise of mosses and lichens





        IMPORTANT LINKS            https://www.youtube.com/watch?v=-GsQvfYwvbA
                                   https://www.youtube.com/watch?v=W2Se2bPQKpk
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