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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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