Humboldt was able to make some generalizations about geography in general, and Mexican geography in particular, that have stood the test of time remarkably well. For example, he was the first to describe the vertical differentiation of climatic and vegetation zones in Mexico. Writing in 1811,...
Floristic regions reflect the geographic organization of floras and provide essential tools for biological studies. Previous global floristic regions are generally based on floristic endemism, lacking a phylogenetic consideration that captures floristic
These models allow showing the spatial pattern of a natural phenomenon, environmental elements, or some human activities, and provide information on the spatial distribution of natural hazards such as flood, landslides, and erosion and they are important tools for planners and environmental managers to...
AsiaMap showing the countries and national capitals of Asia. continent Written by Clifton W. Pannell Associate Dean, College of Arts and Sciences; Professor of Geography, University of Georgia, Athens. Coauthor ofChina: Geography of Development and Modernization;editor ofEast Asia: Historical... ...
Though Laurussia was essentially tropical or subtropical, its climatic zones changed somewhat through the course of the Devonian as this landmass migrated northward during Late Devonian and Early Carboniferous times. Evidence for this movement includes the reduction in evaporitic environments in western ...
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Acacia is the most popular plantation tree in Vietnam with over 1.1 million ha (as of 2014 [42]) and it has been showing a substantial expansion in southeast Asia during the last three decades [43]. Besides, Vietnam has nearly 1 million ha of rubber and about 500 thousand ha of ...
afghanistan/pakistan and the middle east. includes updated place names and the addition of significant locations currently in the news, such as marjah, afghanistan. this wall map covers a broad geographic area ranging from northern africa through the middle east to the western edge of china and...
Europe benefits by having only a small proportion of its surface either too cold or too hot and dry for effective settlement and use. Regional climatic contrasts nevertheless exist: oceanic, Mediterranean, and continental types occur widely, as do gradations from one to the other. Associated veget...
Africa is the second largest continent, covering about one-fifth of the total land surface of Earth. Africa’s total land area is approximately 11,724,000 square miles (30,365,000 square km), and the continent measures about 5,000 miles (8,000 km) from n