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The BIG picture…
….. our BIOSPHERE
REDUCE, REUSE, RECYCLE
PRECYCLING
GIVING THOUGHT to what you NEED
Making CHOICES with the LEAST IMPACT
If buying NEW is the best choice… CONSIDER PACKAGING and it’s IMPACT
USE it up… WEAR it out… MAKE it do… …or DO WITHOUT !
WHY REDUCE our IMPACT on the EARTH?
The United States is 5% of the WORLD’S POPULATION, but…
… the United States PRODUCES 25% of the WORLD’S WASTE!!!
This is our BASIS for SUSTAINABILITY
The IMPORTANCE of SOILS
“SOIL is the most COMPLEX ECOLOGICAL SYSTEM on the PLANET”
IMPORTANT to CIVILIZATIONS http://www.youtube.com/watch?v=NmA6sw5ZSyk
GROWING POPULATIONS, but LIMITED LANDS
SOIL is an INTERFACE between CRUST and ATMOSPHERE
The SOIL's CRUST If you have a GIGANTIC APPLE - 200’ in
diameter …. the SKIN would represent the CRUST of the earth…and the SOIL:EARTH ratio
INTERFACE between CRUST and ATMOSPHERE TEMPERATURE
INTERFACE between CRUST and ATMOSPHERE CARBON CYCLE through gas exchange
INTERFACE between CRUST and ATMOSPHERE NITROGEN CYCLE
INTERFACE between CRUST and ATMOSPHERE MINERAL CYCLES - Phosphorus
INTERFACE between CRUST and ATMOSPHERE WATER CYCLE
The IMPORTANCE of SOILS
IMPORTANT to CIVILIZATIONS GROWING POPULATIONS, but LIMITED
LANDS SOIL is an INTERFACE between CRUST and
ATMOSPHERE SOIL is a MEDIUM for PLANT GROWTH
SOIL is a MEDIUM for PLANT GROWTH
Anchorage Water – H2O Oxygen – O2
14 Essential Nutrients N, P, K, Ca, Mg, S B, Cl, Cu, Fe, Ni, Mn, Mo, Zn
SOIL MATRIX 3 PHASE SYSTEM – The arrangement of
SOLID, LIQUID and GAS in SOILS The IDEAL soil …
ROOTS grow in PORE SPACES
ROOTS grow in OPTIMAL CONDITIONS Best Pore Spaces Best Water Best Oxygen Best Nutrients
ROOTS also grow …
…in the PATH of LEAST RESISTANCE
AGRICULTURAL USES of SOILS
CROPLAND
AGRICULTURAL USES of SOILS
GRAZING LAND
AGRICULTURAL USES of SOILS
FOREST LAND
AGRICULTURAL USES of SOILS
ORNAMENTAL LANDSCAPES
NON-AGRICULTURAL USES of SOILS
RECREATIONAL
NON-AGRICULTURAL USES of SOILS
BUILDING FOUNDATIONS Shrink-swell
NON-AGRICULTURAL USES of SOILS
BUILDING FOUNDATIONS Load Bearing Capacity
NON-AGRICULTURAL USES of SOILS
WASTE DISPOSAL
NON-AGRICULTURAL USES of SOILS
BUILDING MATERIALS Traditional Sod and Adobe
NON-AGRICULTURAL USES of SOILS
BUILDING MATERIALS Newer Rammed Earth and Cobb techniques
NON-AGRICULTURAL USES of SOILS
LANDSCAPE BUILDING MATERIALS Engineered Soils
LAND USE in the United States
Most land is in AGRICULTURAL (25%), RANGELAND (27%) and FOREST LAND (27%)
Much is being LOST to URBAN DEVELOPMENT (7% and growing) …
LAND USE in the WORLD
… and SOIL DEGRADATION
Erosion Pollution Loss of
Organic Matter Desertification Changes in Chemistry Salination – Saltiness
LAND USE in the WORLD
SOILS are NON-RENEWABLE in our lifetimes
BMP’s – Best Management Practices are important to understand and implement to MAINTAIN SOIL QUALITY
http://www.youtube.com/watch?v=5M3QT0CI9wA
What Can You Do? VALUE: Reduce Material Consumption
I value longevity, quality over quantity, sharing and spacious simplicity
VALUE: Conserve Energy and Natural Resources I value the limited gifts and life forms of the natural world
and will not waste them thoughtlessly From BE the CHANGE - ACTION GUIDE
ACTIONS and IMPACT What actions do I do, daily or regularly, to lessen my impact
on the earth? (Big or small, it doesn’t matter…. baby steps count!)
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