Soil and Ecosystems
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Soils are classified based on their structure, origin, and composition. They are formed from pieces of rock (rocky soils), sand (sandy soils), clay (clay soils), mixtures of sand and loam (sandy-loamy soils), or decayed organic materials (muck soils). Terrestrial ecosystems include flowering and non-flowering plants that grow in different soil types, while decomposers like fungi and bacteria break down organic matter. Aquatic ecosystems contain plankton, algae, and plants adapted to aquatic environments, and receive organic matter from terrestrial ecosystems through rivers and lakes.
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Physical behavior of soil
The document discusses the physical properties of soil, including its formation from weathering rocks, composition of solid, liquid, and gas phases, texture determined by sand, silt and clay content, structure defined by arrangement of particles, density, porosity, temperature, and classification of soil water. Key topics covered are the three phases of soil, factors influencing soil color, common soil structures like platy and granular, and definition of terms like bulk density, field capacity, and permanent wilting point.
Soil
Dr. Amit Hemant Mishal is an associate professor who teaches courses on special education. This document provides a summary of the key points about soil:
- Soil is formed through the weathering of rocks into smaller particles over long periods of time due to various physical, chemical, and biological processes.
- Soil properties like texture and capacity to hold water vary depending on the sizes of particles, with clayey soil holding the most water and sandy soil holding the least.
- Soil is a critical natural resource that supports plant life and provides nourishment, habitat, and materials that sustain all animal and human life on Earth.
Soil intro-1
This document provides an overview of soil, including its living and nonliving components, how it forms over long periods of time, its various textures and types, and its layered structure. Soil is a mixture of minerals, water, air and organic matter that supports plant life. It takes various factors like climate, organisms, topography and parent material between 100-1000 years to fully form. Soil has different textures like sand, silt and clay that determine properties like drainage and ability to retain nutrients and water. The ideal soil is loam, containing a balance of textures. Soil exists in layers with distinct horizons from surface organic matter to subsurface layers to parent material and eventually bedrock.
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MICROBIAL INTERACTION PPT/ MICROBIAL INTERACTION AND THEIR TYPES // PLANT MIC...
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Negative interaction: Ammensalism (antagonism), parasitism, predation, competition
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Compound A
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Compound B
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Compound C
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Products
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Soil and Ecosystems
- 2. Soils are classified according to their structure, origin and composition. Soils are formed by pieces of rocks (rocky soils), sand (sandy soils), clay (clay soils), loam and sand (sandy-loamy soils) and decayed organic materials (muck soils).
- 3. Can you guess which one is which? •ROCKY SOIL •SANDY SOIL •CLAY SOIL •SANDY-LOAMY SOIL •MUCK SOIL
- 4. Can you guess which one is which? •ROCKY SOIL •SANDY SOIL •CLAY SOIL •SANDY-LOAMY SOIL •MUCK SOIL ROCKY SOIL SANDY-LOAMY SOIL SANDY SOIL MUCK SOIL CLAY SOIL
- 5. The balance between plants and abiotic factors like water and air determines the distribution of different plant species in ecosystems. TERRESTRIAL ECOSYSTEM In this ecosystem, flowering and non-flowering plants grow in different kinds of soils. Decomposers like fungus and bacteria change organic matter.
- 6. The balance between plants and abiotic factors like water and air determines the distribution of different plant species in ecosystems. TERRESTRIAL ECOSYSTEM In this ecosystem, flowering and non-flowering plants grow in different kinds of soils. Decomposers like fungus and bacteria change organic matter. AQUATIC ECOSYSTEM In this ecosystem, plankton, algae and plants adapted to the aquatic environment grow. The relationship between soil and the aquatic ecosystem is caused by the organic matter that is carried from terrestrial ecosystems by the rivers to the oceans and lakes. Terrestrial and aquatic ecosystems depend on each other since the energy flows between both ecosystems to maintain the balance and the sustainability of the biotic and abiotic factors.
- 7. A group of microscopic organisms which live in salt or sweet water, more abundant up to 200 meters of depth.
- 8. A very large and diverse group of organisms, ranging from unicellular to multi-cell forms such as the giant kelp, a large brown alga that may grow up to 50 meters in length.