This book provides information on the importance of the atmosphere, natural vegetation, soils and the surface of the earth to human society and discusses some of the ways in which the natural order has already been modified by human action. Details are provided through the use of specific examples chosen particularly from Britain and New Zealand. Environmental Systems and Human Impact is part of the Update series which brings together all the important aspects of recent research and up-to-date information for advanced students of geography and related subjects.This book presents important background material for developing the discussion of 'green' issues and is suitable for A-level students and undergraduates.