This text investigates the complex spatial variations in plant distribution and function across the Earth's biosphere at both regional and global scales. Joy Tivy, a respected academic in the field of geography, utilizes a synthesis of ecological data and physical geography to construct a framework for understanding how environmental factors dictate the patterns of life. The book argues that plant distribution is not random but is the result of long-term interactions between climatic, geological, and biological variables.

Experts and academics frequently cite this work as a foundational text for students of biogeography and physical geography. Readers often note the academic density of the prose, which serves as a comprehensive reference for understanding large-scale ecological systems.