PPT-Humans and Soil Soil erosion and conservation

By the end of this section you will be able To name and explain the causes of soil erosion Describe in detail how human activities can cause soil erosion Name and explain the primary methods of soil conservation. Methods of soil conservation (ch3). The key aspects discussed in this chapter are:. Windbreaks. Contour ploughing. Stubble planting. Terraces. Stone walls. Reduce farming in dry weather. Windbreaks. Reforestation. Anticipated Problem: . What is soil erosion?. I. . Soil erosion . is the process by which soil is moved. When soil is eroded, it may become pollution in the water or air. The land where it came from, loses fertility. Vegetation and other coverings help prevent soil erosion. . Chad Lentz. Why Care?. Removes valuable topsoil. Carries away expensive nutrients. Increase tillage costs to fix. Creates algae blooms and dead zones due to excess nutrients in waterways. Types of Erosion. Soil and Soil Dynamics. APES. Ms. . Tooker. 2015. Rock cycle. Formation. Composition. Physical and chemical properties. Main soil types. Erosion. Soil conservation. Soil and Soil Dynamics. Soil. Thin layer on top of most of Earth’s land surface. Chapter 7. Section 7.1 Weathering. Weathering is the process by which rocks on or near Earth’s surface break down and change. . Erosion is the removal and transport of weathered material from one location to another.. Jar Test. Structureless. Blocky. Platy. Granular. Prism-Like. Soil Structure: Arrangement. Structureless. Single grained. Massive. Examples: Sand or hard packed clay. Soil Structure: . Structureless. Nancy . Rogel. Eddie . Guadarrama. . Outline. What is Soil Erosion. Types of Erosion. Factors Affecting Erosion Rates. Human Activities that increase Erosion Rates. How to Prevent Erosion. What is Soil Erosion. (chapter 10, section 4). mature soil takes . THOUSANDS. of years to form (so it’s . nonrenewable. ), so it needs to be. . protected (conserved). Why is soil so important?. 1. Nutrients. --Soil . Uppermost layer of earth’s crust that supports plants, animals and microbes. Soil Forming Factors. Parent Material. Time. Climate. Vegetation & Organisms. Topography. 1. Parent Material. Refers to the rock and minerals from which the soil derives.. Natural Resources. Conservation Service. . Soils: Formation. Soil horizons. Soil profile . Humus . O horizon. Leaf litter. A horizon. Topsoil. B horizon. Subsoil. C horizon. Parent. material. Mature soil. The Dirt on Dirt Part 3 – Soil Management Review Parts 1 & 2 focused on the elements of Soil Science In essence – “what you have” In this section we will cover Fertility Drainage Erosion THK JAIN COLLEGE. WHAT IS SOIL EROSION. . Soil erosion is a type of soil degradation in which there is wearing away or displacement of the upper layer of soil (topsoil).. Soil erosion is a global threat in the current world scenario.. DSE3T : Factor, Processes and Mitigation Soil Erosion Soil is the most precious gift of nature - Prime resource - for food, fodder etc. for food, fodder etc. It is the earth’s fragile covering t areas. : . facts. , . issues. , and . perspectives. Caring. . for. . Soil. – . Where. . Our. . Roots. . Grow. Outline. :. ->. Definitions. (focus on water . erosion. ). ->. Facts. /. examples.