Review:
There is a need for texts which seek to bring together the practical
and the theoretical especially in something as fundamental as
soil. What we have here is a significant re-working of an original
text which brings a lot of new information to light as well
as reinforcing key ideas. Despite the title there is one caveat
which remains - this is essentially a New South Wales, Australia
soil manual and although there is much to be commended, it's
focus is essentially this state.
However,
this is not always the main focus and there is still a great
deal to use. We start with a brief overview of soil formation
and the factors behind it acting to set the scene and provide
some key terms for the work coming afterwards. The practical
focus now becomes evident with four chapter focussed roughly
on soil loss and erosion. Whilst it is true that chapter three
does mention soil formation it soon continues to look at how,
and at what speed, soil is lost. Chapter five marks a change
in discussion as we move towards describing soil based on a
series of properties. The first aspect then is to describe the
soil profile (using the older A,B,C horizon approach rather
than the more familiar A,E,B,C seen elsewhere. This is followed
by two chapters looking at classification (with a very good
section detailing the most common systems and their equivalents
- a sort of translation service) and mapping. This leads naturally
to a description of a soil system which , as noted earlier,
is New South Wales. This is vital for Australia but there are
also lessons to be learned elsewhere especially in the area
of soil degradation (a major problem in Australia in terms of,
for example, acid sulphate soils). Chapter 9 links with this
to an analysis of soil landscape regions. Chapter 20 marks another
change of focus towards the physical properties of soils. This
starts with a look at basic physical properties which is followed
by another practical case in terms of soil engineering - the
ability of soil to deal with building demands but also a chapter
with practical measurement information in it. Chapter 12 marks
the return to an earlier theme of soil loss whilst 13 and 14
focus on chemical properties and interactions. From this point,
the reader is taken through a series of examples and issues
from key soil-land use scenarios. Starting with capability surveys,
the contributors move through farming, rangeland and coastal
systems which could be considered semi-natural systems. More
artificial aspects are then dealt with in studies of revegetation,
earthworks, urban land and rehabilitation. A final chapter rounds
up key points and examines the way in which we can promote sustainable
use.
There
is much of interest in this text. It is clearly written and
very well illustrated. most of the text is fairly accessible
although this is not aimed a beginners in soil studies. There
are numerous references for those wishing to get further information.
Overall, one of the better books in soil studies with much to
commend it. For the UK, its one downside is its state-specific
tone however, get beyond this and there is a great deal of information
available.