The kindest cut
Cutting down trees could be the best way to
preserve tropical forests
DEPRESSING
reports about how quickly the world's tropical forests are being felled are
commonplace. But depressing reports about the state of the trees that are still
standing are much rarer. In fact, a new study from the International Tropical
Timber Organisation (ITTO), an offshoot of the United Nations, claims to be the
first exhaustive survey of tropical-forest management ever undertaken. Its
findings, although grim, do contain a kernel of hope.
The
ITTO examined “permanent forest estate”, meaning land that the governments of
its 33 members have formally set aside for forests, and is therefore subject to
some form of regulation or protection. The category includes both national
parks and timber concessions, in both public and private hands. It covers 814m
hectares, and accounts for roughly two-thirds of the world's tropical forests.
The
concept is important, explains Duncan Poore, one of the authors of the report,
because it is not always possible, or desirable, to protect every last grove
against encroaching farms or homes. Instead, governments should concentrate on
maintaining the forests that are the most commercially and scientifically
valuable. Yet the ITTO's researchers found that only 15% of the permanent
forest estate has a management plan, and less than 5% of it is sustainably
managed. That still amounts to an area the size of Germany, the report notes,
and represents a dramatic improvement since 1988, when an earlier and less
extensive survey found that only one country in the tropics—Trinidad and
Tobago—had any well-run forests at all. But relative to the area of forest that
has
disappeared over the same period, the
well-managed area is negligible.
The
crux is bad government. Poor countries do not always have good forestry laws.
Even when they do, they rarely have the capacity to enforce them. It is no
coincidence that Malaysia, the country with the highest proportion of prudently
managed forest in the study, is also one of the richest. Countries with the
worst run forests, meanwhile, are war-torn places such as Congo and Cambodia.
More surprising,
perhaps, is the difference the report found between forests where logging is
allowed, and those that have been earmarked for conservation. Some 7% of
“production” forests, it turns out, are in good shape, compared with just 2.4%
of “protection” forests. As Dr Poore points out, it is easy to undertake to
preserve a forest, but difficult to do so in practice. Timber concessionaires
at least have an incentive (and probably the wherewithal) to look after their
property, while ill-paid and ill-equipped forestry officials often have
neither. Exploiting forests may prove the best way to preserve them
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链接http://zhidao.baidu.com/question/552012660574114092.html?quesup2&oldq=1
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