Terrestrial biomes & ecosystem types hub

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     Terrestrial biome & ecosystem classification systems

     Wetlands

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               Forest types & forest biomes

               Forest institutions

                    UN forest agreements & organizations

               Forests & climate change (including REDD+)*

               Forest fire & wildfires

     Mountains

     Subterranean environment & caves

EarthWeb.info's

Relative Area Context & Comparison Chart

"Yellowstone National Park is 2.2 million acres."  

OK, but what does that mean?

To get a sense of relative geographic scale, see the:

Context & comparison chart