The Earth as Modified by Human ActionMarsh, George P. (George Perkins)
History
The Earth as Modified by Human Action
Marsh, George P. (George Perkins)
Conservation of natural resources; Human geography; Nature -- Effect of human beings on; Physical geography
Although no country has produced more able writers on the value of the
forest and the general consequences of its destruction than Italy, yet
the specific geographical importance of the woods, except as a
protection against inundations, has not been so clearly recognized in
that country as in the States bordering it on the north and west. It is
true that the face of nature has been as completely revolutionized by
man, and that the action of torrents has created almost as wide and as
hopeless devastation in Italy as in France; but in the French Empire the
recent desolation produced by clearing the forests is more extensive,
has been more suddenly effected, has occurred in less remote and obscure
localities, and therefore, excites a livelier and more general interest
than in Italy, where public opinion does not so readily connect the
effect with its true cause. Italy, too, from ancient habit, employs
little wood in architectural construction; for generations she has
maintained no military or commercial marine large enough to require
exhaustive quantities of timber, [Footnote: The great naval and
commercial marines of Venice and of Genoa must have occasioned an
immense consumption of lumber in the Middle Ages, and the centuries
immediately succeeding those commonly embraced in that designation. The
marine construction of that period employed larger timbers than the
modern naval architecture of most commercial countries, but apparently
without a proportional increase of strength. The old modes of
ship-building have been, to a considerable extent, handed down to very
recent times in the Mediterranean, and though better models and modes of
construction are now employed in Italian shipyards, an American or an
Englishman looks with astonishment at the huge beams and thick planks so
often employed in the construction of very small vessels navigating that
sea, and not yet old enough to be broken up as unseaworthy.] and the
mildness of her climate makes small demands on the woods for fuel.
Besides these circumstances, it must be remembered that the sciences of
observation did not become knowledges of practical application till
after the mischief was already mainly done and even forgotten in Alpine
Italy, while its evils were just beginning to be sensibly felt in France
when the claims of natural philosophy as a liberal study were first
acknowledged in modern Europe. The former political condition of the
Italian Peninsula would have effectually prevented the adoption of a
general system of forest economy, however clearly the importance of a
wise administration of this great public interest might have been
understood. The woods which controlled and regulated the flow of the
river-sources were very often in one jurisdiction, the plains to be
irrigated, or to be inundated by floods and desolated by torrents, in
another. Concert of action, on such a subject, between a multitude of
jealous petty sovereignties, was obviously impossible, and nothing but
Public-domain text, read in full here on John Shaqi.
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