Fascinating set of maps and diagrams, illustrating the distribution of plants and vegetation around the world.
The map provides a comprehensive representation of the world's vegetation distribution in relation to temperature and geography. The first diagram showcases a side-view representation of different mountain ranges and their respective heights. However, what's unique is that alongside showcasing elevation, this diagram integrates information about how vegetation shifts with altitude. As one moves from the base to the peak, vegetation changes, and this is represented for various ranges. This illustration further divides the altitude range into three distinct climate zones: torrid (hot), temperate (moderate), and frigid (cold), offering insights into how vegetation types transition from the equator to the poles. Additionally, the diagram features markers for the average annual temperature and the temperatures of the warmest and coldest months.
The sheet also contains a global map detailing the distribution of vegetation, titled "Map of Schouw's Phyto-Geographic Regions." Prominent forest trees in various global regions are highlighted with thick black letters, offering a snapshot of which trees are prevalent in different areas. The map's background colors are methodically chosen to depict parallels or distinctions between continents regarding their vegetation. Smaller black lettering pinpoints particularly significant or abundant plant species and genera. In contrast, red lettering emphasizes plants that play a pivotal role in defining the overall look, or "physiognomy," of global vegetation. Red lines, representing isotherms, traverse this map, marking zones of equal temperature. The spaces between these lines demarcate vegetation zones based on temperature, illustrating the habitats of specific plants relative to certain temperature ranges.
Supplementing these main features are detailed images that spotlight the structure and characteristics of some prominent plants. Alongside these visuals, there's a series of charts or diagrams delving into the most essential plant families, highlighting their distinctive traits, distribution, and significance. Lastly, to aid in the interpretation of the map's intricate color scheme, a legend is provided that explains the various hues and what each represents concerning vegetation regions.