Model of the Mineral Nutrient Cycle developed by P.F. Gersmehl in 1976

Slides:

Advertisements

Similar presentations

The Nature of Soil Chapter 7, Section 2.

Advertisements

Weathering and Soil.

How does a tropical rainforest ecosystem function?

Characteristics Texture Soil Profile Soil Types Threats to Soil

 Constant warmth and rainfall provides the home to most of the species on Earth.  > 70% of all terrestrial species  Question:  How does the structure.

Earth’s Resources Chapter Fifteen: Soil and Fresh Water Resources 15.1 Soil 15.2 Water Resources.

How Solid Forms Chapter 2 Section 3 6 th Grade Team.

Climate Zones and Vegetation

Rocks, Weathering, and Soil Information

The Nature of Soil Essential Question:

DO Now: You find a sedimentary rock that has one graded bed. Describe how you know which layer of the graded bed is formed last?

Soil is a mixture of weathered rock and organic matter

Do We Really Need Soil? Let’s Dig Up the Facts! Soil Contains the Minerals All Living Things Need!

Unit 5: Biosphere Ms. Thind SOIL FORMATION AND SOIL PROFILES.

Forest Biomes Chapter 9.

1 Canadian Geography Ch 5 Northern Character Canada’s climate is classified as nordic – which is a climate in the northern latitudes in which summers.

Chapter Soil Chapter 12.4 Soil as a Resource

Soil and Soil Conservation

Chapter 7 Weathering and Soil

SOIL FORMATION AND COMPOSITION. Soil Formation Soil forms as rock is broken down by weathering and mixes with other material on the surface. Bedrock is.

Soil Chapter 8.

SOIL AND NATURAL VEGETATION Physical Geography. Soil  Soil is made up of 4 main parts: Minerals Organic and Bacterial materials Moisture Air  Think.

Soil and Natural Vegetation Physical Geography Do We Really Need Soil? Let’s Dig Up the Facts!

Soil is an important natural resource to life on earth!

Formation of Soil Pg. 73.

The Ground Beneath Our Feet. What Makes Up Healthy Soil? Mineral fragments, humus, air, water, and living things – Plant roots, Insects, Worms Humus –

SOIL. What is soil? The loose covering of broken rock particles and decaying organic matter (humus) covering bedrock.

Biomes. Major Biomes Tropical rain forest Tropical rain forest Tropical dry forest Tropical dry forest Savanna Savanna Grassland Grassland Desert Desert.

WHAT’S IN THE SOIL? And why is it important?. Sand  Drains well but can not hold onto nutrients. Sand is a large particle.  Form lightweight, free-draining.

Climate Zones Please Follow Along on Your Ipad. Tropical Climates  Tropical Rain Forest  Year-round rainfall  Lush vegetation  Millions of species.

6-2 Forest Biomes.

The Tropical Rainforest IB SL. Location Introduction... They are the world's most productive ecosystems in terms of NPP and biomass. They are complex.

Its a dirty job, but someone has to do it! Canada's Soil and Natural Vegetation Connections Chapter 14 pg

By: Christin Conkwright (:.  Soil is the unconsolidated mineral or organic material on the surface of the earth.  Soil serves as a medium for the growth.

Nutrient cycles The nitrogen cycle Inputs of nutrients : 1.Precipitation & dry deposition 2.Weathering of bedrock 3.[Artificial supplements]

What do plants need to survive? What is soil made of? Organic matter Sand, silt, clay Weathered rocks None of the above All of the above.

Biodiversity and Change.  responsibility/how-brazil-cut-deforestation- rates-to-record-lows.html

SOIL FERTILITY Which soil profile is likely to be more fertile?AB.

Understanding Soil Formation Mr. Pullom Fall 2011.

How Soil Forms.

From Bedrock to Soil.

Soil. Soil Formation Over many years, weathering and erosion will cause the formation of soil. Soil is the loose, weathered material on the Earth’s surface.

How Much Fertile Soil Does Earth Have?

Soil Composition Fertilizer. Soil  Loose covering on the ground containing a mixture of organic matter, minerals and moisture.

Soil Chapter 7, Section 3 & 4. Soil  A loose mixture of rock fragments, organic material, water, and air that can support the growth of vegetation.

BIOZONE: None Textbook: None

ECOLOGY The study of living things and how they interact with each other and the environment.

Biomes. Outline Tundra Taiga Temperate Deciduous Forest Grassland Desert Mountain and Coastal Forest Tropical Rain Forest.

The Fabulous World of Soil Soil What is it? What is it made of?

Biomes What do you need to know? -soil types of different biomes differ - filtration rates, rate of water flow through the soil, of the different soils.

Weathering  It is surface processes that break down rock  Breaks rocks into smaller and smaller pieces  Ex.) Sand, silt, clay  The formation of soil.

Chapter 18 section 2 Climate Regions What factors are used to classify climates? What are the six main climate regions? rainforest, savanna, desert, steppe,

SOIL AS AN ECOSYSTEM INTRODUCTION TO SOILS FIELD STUDY What do we know about soil now? What makes up soil? What lives there? Where does soil come from?

The biosphere is divided into major areas called biomes.

NASA BIOSPHERE and BIOMES © 2016 Paul Billiet ODWS.

Soil and Vegetation.

The Ground Beneath Our Feet

Don’t SOIL yourself….

Gersmehl Diagrams.

Soil Formation Soil – The loose, weathered material on Earth’s surface in which plants can grow. How is soil formed? Mechanical and chemical weathering.

The Ground Beneath Our Feet

Soil Profiles for Dummies (not you guys) By R. Earl

Presentation transcript:

Model of the Mineral Nutrient Cycle developed by P.F. Gersmehl in 1976 Soil is the top layer of the earth that is composed of disintegrated rock particles, humus, water and air. Litter is organic matter in and on the soil, it includes humus and leaf litter. Biomass is the total mass of living organisms, mainly plant tissue, per unit area. It is a store of energy and is also known as standing crop. It can be measured in 3 ways: - dry weight (kg/metre squared) - ash weight - calorific value per unit area biomass litter soil Store of nutrients Transfer of nutrients The size of the circles and arrows is proportional to the amount of nutrients

Taiga (northern coniferous forest) Relatively low as conifers form only one layer, little under growth, limited species, small needles Little ppt. Continual supply of litter biomass Trees take up nutrients Large store because of low rate of decomposition due to cold temp. litter Small store of nutrients due to poor drainage and soil formed from glacial deposits which have low fertility Slow decomposition due to cold & thick cuticles High runoff after snowmelt when ground still frozen soil Some leaching due to ppt. Slow chemical weathering of parent rock due to cold

b) Steppe & Prairie (mid-latitude continental grassland) Small store due to climate, insufficient moisture to support trees & growing season reduced to 6 months by cold temps. Much of biomass beneath surface as rhizomes & roots High supply of litter, grasses die back in winter Little ppt. biomass Litter store small as no trees, grasses die back quickly into soil Some plants store their own nutrients in rhizomes & roots so not as many nutrients taken up from soil litter High runoff as soils saturated High decomposition due to wet & dry seasons & bacteria soil Large store of nutrients due to good drainage Weather encourages chemical & physical weathering releasing nutrients to soil Low ppt means less loss of nutrients from leaching

c) Selvas (tropical rainforest) Tall, dense & rapid growth of vegetation. Several layers & countless species. High ppt. all year Continual supply of litter biomass Small store because of high rate of decomposition The many plant roots take up vast amounts of nutrients L High runoff because of lots of rain, soil cannot absorb it all Rapid decay due to heat & moisture, ideal for bacterial action Small store due to leaching and soils inherent infertility soil Rapid chemical weathering due to heat & humidity Rapid leaching due to ppt