This book presents a unique and up-to-date summary of what is known
about groundwater on our planet, from a global perspective and in
terms of area-specific factual information. Unlike most textbooks
on groundwater, it does not deal with theoretical principles, but
rather with the overall picture that emerges as a result of
countless observations, studies and other activities related to
groundwater in all parts of the world. The focus is on showing the
role and geographical diversity of groundwater-a natural resource
of great importance in daily life, but poorly understood by the
general public and even by many water sector professionals. The
book starts by analysing groundwater in the context of the
hydrological cycle. Subsequently, groundwater systems as physical
units, with their boundaries mainly defined by geological
conditions, are reviewed. The next chapter looks at groundwater as
a resource, paying attention, among others, to its quantity and
quality, to the differentiation between renewable and non-renewable
resources, and to the techniques for withdrawing groundwater. This
is followed by a systematic documentation of the quantities of
groundwater withdrawn and used around the world, and of the
corresponding shares of groundwater in each of the main water use
sectors. After that, steadily growing needs for groundwater
management interventions are identified, resulting from local human
activities and global change (including demography, economic
development and climate change). Finally, groundwater resources
management is addressed and real-life cases are described that
illustrate actions taken and experiences with different issues in
different parts of the world. The authors attempted to write this
book in such a way that it is accessible to a wider readership than
just groundwater professionals. It will also benefit
non-groundwater specialists who work in groundwater-related fields
(water managers, land use planners, environmentalists, agronomists,
engineers, economists, lawyers, and journalists), by broadening
their understanding of groundwater and making them aware of the
huge variety of groundwater settings. Groundwater specialists will
use the book as a convenient reference on the geographical
diversity of groundwater. Part of the contents or interpretations
offered may even be new to them or enhance their knowledge of some
aspects. The many maps, tables, and references will save much time
for those who would otherwise have to search elsewhere for basic
information on the globe's groundwater.
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