Figure 23.1 Ecological Climatology © 2008 G. Bonan.

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Presentation transcript:

Figure 23.1 Ecological Climatology © 2008 G. Bonan

Biomass (g m -2 ) Figure 23.2 Years Biomass (g m -2 ) Years Ecological Climatology © 2008 G. Bonan

Beech seed origin Beech sprout origin Yellow Birch Sugar Maple Canopy Gap Old-Growth Forest Large-Scale Disturbance Successional Communities Succession Figure 23.3 Ecological Climatology © 2008 G. Bonan

MatureDyingRegeneratingMatureDyingYoung Wind Figure 23.4 Ecological Climatology © 2008 G. Bonan

2 km Figure 23.5 Ecological Climatology © 2008 G. Bonan

1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s Boreal forest 1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s Temperate grassland 1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s Tropical forest 1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s Savanna/grassland 1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s Temperate forest Boreal forest Temperate forest Temperate grassland Tropical forest Savanna/ grassland Area Burned (  10 3 km 2 yr -1 ) Area Burned (  10 3 km 2 yr -1 ) Area Burned (  10 3 km 2 yr -1 ) Area Burned (  10 3 km 2 yr -1 ) Area Burned (  10 3 km 2 yr -1 ) Area (  10 3 km 2 ) Figure 23.6 Ecological Climatology © 2008 G. Bonan

Figure 23.7 Ecological Climatology © 2008 G. Bonan

Forested Area (hectares) Figure 23.8 Ecological Climatology © 2008 G. Bonan

Area (hectares) Forest Arable Land Grassland cleared for agriculture Figure 23.9 Ecological Climatology © 2008 G. Bonan

Figure Ecological Climatology © 2008 G. Bonan

Figure Ecological Climatology © 2008 G. Bonan

Area (million acres) Mountain States Area (million acres) Lake States Area (million acres) New England Forest Farm Urban Forest Farm Urban Forest Farm Urban Figure Ecological Climatology © 2008 G. Bonan

Forest Area (%) Forest Area (%) Prospect Hill Massachusetts Petersham Figure Ecological Climatology © 2008 G. Bonan

Pine forest Boreal forest Mesic forest Aspen- birch forest Oak forest Wet forest Non-forest Area (hectares) Mid-1800sPresent-day Figure Ecological Climatology © 2008 G. Bonan

Area (km 2 ) Figure Ecological Climatology © 2008 G. Bonan

Figure Forest site Prevailing wind Pasture site Ecological Climatology © 2008 G. Bonan