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Professional Paper 1650-E

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Atlas of Relations Between Climatic Parameters and Distributions of Important Trees and Shrubs in North America— Ecoregions of North America

Bailey Ecoregions
(Click on an ecoregion name to view the graphical display for that ecoregion.)
Domain Division Province
POLAR DOMAIN Icecap Division Glacial ice

Tundra Division Ice and stoney deserts


Arctic tundras


Tundras

Tundra Mountains Polar desert


Tundra - polar desert


Tundra - meadow


Oceanic meadow - heath

Subarctic Division Forest-tundras and open woodlands


Tayga (boreal forests)

Subarctic Mountains Open woodland - tundra


Tayga - tundra, medium


Tayga - tundra, high
HUMID TEMPERATE DOMAIN Warm Continental Division Mixed deciduous-coniferous forests

Warm Continental Mountains Mixed forest - coniferous forest - tundra, medium


Mixed forest - coniferous forest - tundra, high

Hot Continental Division Broadleaved forests, oceanic


Broadleaved forests, continental

Hot Continental Mountains Deciduous or mixed forest - coniferous forest - meadow


Broadleaf forest - meadow

Subtropical Division Broadleaved-coniferous evergreen forests


Coniferous-broadleaved semi-evergreen forests


Riverine forest

Subtropical Mountains Mixed forest - meadow

Marine Division Mixed forests

Marine Mountains Deciduous or mixed forest - coniferous forest - meadow


Forest - meadow, medium


Forest - meadow, high

Prairie Division Forest-steppes and prairies


Prairies and savannas

Mediterranean Division Dry steppe


Mediterranean hardleaved evergreen forests, open woodlands and shrub


Redwood forests

Mediterranean Mountains Mixed forest - coniferous forest - alpine meadow


Mediterranean woodland or shrub - mixed or coniferous forest - steppe or meadow


Shrub or woodland - steppe - meadow
DRY DOMAIN Tropical/Subtropical Steppe Division Coniferous open woodland and semideserts


Steppes


Steppes and shrubs


Shortgrass steppes

Tropical/Subtropical Steppe Mountains Steppe or semidesert - mixed forest - alpine meadow or steppe

Tropical/Subtropical Desert Division Semideserts


Oceanic semideserts


Deserts on sand

Tropical/Subtropical Desert Mountains Semidesert - shrub - open woodland - steppe or alpine meadow


Desert or semidesert - open woodland or shrub - desert or steppe

Temperate Steppe Division Steppes


Dry steppes

Temperate Steppe Mountains Forest-steppe - coniferous forest - meadow - tundra


Steppe - coniferous forest - tundra


Steppe - coniferous forest


Steppe - open woodland - coniferous forest - alpine meadow

Temperate Desert Division Semideserts


Semideserts and deserts

Temperate Desert Mountains Semidesert - open woodland - coniferous forest - alpine meadow
HUMID TROPICAL DOMAIN Savanna Division Open woodlands, shrubs, and savannas


Semi-evergreen forests


Deciduous forests

Savanna Mountains Open woodland - deciduous forest - coniferous forest - steppe or meadow


Forest - steppe

Rainforest Division Semi-evergreen and evergreen forests


Evergreen forests

Rainforest Mountains Evergreen forest - meadow or paramos

The figures included in the Graphical Displays and Histograms sections of this volume are in Adobe Acrobat format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

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