HUMAN CHANGES SOIL STRUCTURE

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HUMAN CHANGES OF SOIL STRUCTURE

• PRESENTED BY INDRANIL BANERJEEENROLLMENT
  NO-CEM18005
• SUBENGINEERING BEHAVIOUR OF SOIL(CE501)
• DEPARTMENT OF CIVIL ENGINEERING
• TEZPUR UNIVERSITY
• 1ST SEMESTER,AUTUMN 2018

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CONTENTS

• INTRODUCTION
• LAND USE EFFECTS SOIL
• FOREST REMOVAL
• CONSTRUCTION AND DEVELOPMENTSINDUSTRIAL WASTE
• INDUSTRIAL WASTE
• AGRICULTURAL EFFECTS
• FARMING
• MINING
• REFFERENCE

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INTRODUCTION

• . Soil helps sustain life on Earthincluding our
  life. We already know that soil supports the
  growth of plants, which in turn supply food for
  animals. Therefore, soil provides us with nearly
  all the foods which we eat. But thats not all.
  Many other items we use, such as cotton clothing
  and medicines, come from plants. Lumber in our
  home comes from trees. Even the oxygen also comes
  from plants. Besides supporting the growth of
  plants, soil plays other life sustaining roles.
  Soil helps purify, or clean, water as it drains
  through the ground and into rivers, lakes, and
  oceans. Decomposers in soil also help recycle
  nutrients by breaking down the remains of plants
  and animals, releasing nutrients that living
  plants use to grow.

• The global human population has grown from
  approximately 600 million at the beginning of the
  eighteenth century to close to 7.6 billion today.
  human activities are now at such a scale as to
  rival forces of nature in their influence on soil
  changes.

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LAND USE EFFECTS SOIL
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FOREST REMOVAL
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CONSTRUCTION AND DEVELOPMENT
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INDUSTRIAL WASTE
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LAND USE AGRICULTURAL EFFECTS

• .

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FARMING

• Farmers often add nutrients to soil in the form
  of organic or artificial fertilizers to make
  their crops grow better. However, some
  fertilizers can make it difficult for
  microorganisms in the soil to produce nutrients
  naturally. Fertilizers also add to water
  pollution when rainwater draining from fields
  carries the excess nutrients to rivers, lakes,
  and oceans. Over time, many farming practices
  lead to the loss of soil.

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MINING
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REFFERENCE

• 1 . https//www.classzone.com/science_book/mls_gra
  de7_FL/248_252.pdf
• 2. https//www.quora.com/How-does-deforestation-i
  mpact-soil-erosion
• 3. WILLARD H. CARMEAN, Athens Forest Research
  Center, Central States Forest Experiment Station,
  Athens, Ohio, THE STRUCTURE OF FOREST SOILS
  https//kb.osu.edu/bitstream/handle/1811/4444/V57N
  03_165.pdf
• 4. Mitchell, J.K. and Soga, K. Fundamentals of
  soil behavior, 3rd ED. , john Wiley sons, New
  Jersey, USA,2005.
• 5. Yong, R.N., and Warkentin. B.P., Soil
  Properties and Behavior, Elsevier, Amsterdam, the
  Netherlands, 1975.
•  

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Thank you