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Globally
The unique nature of forest eco-systems has long
been acknowledged. Forest eco-systems play multiple roles
at global as well
as local levels: as providers of environmental services
to nature in general - and humans in particular - and
as sources of economically valued products. Deforestation
over the past 30 years has been the continuation of a process
with a long history. Major direct causes of forest clearance
and degradation include expansion of agricultural land,
over-harvesting of industrial wood, fuel wood and other
forest products, and overgrazing. Underlying drivers include
poverty, population growth, markets and trade in forest
products, as well as macroeconomic policies. Forests are
also damaged by natural factors such as insect pests, diseases,
fire and extreme climatic events.
The net loss in global
forest area during the 1990s was about 94 million ha (equivalent
to 2.4 per cent of total
forests).
This was the combined effect of a deforestation rate of 14.6
million ha annually and a rate of reforestation of 5.2 million
ha annually. Deforestation of tropical forests is almost
1 per cent annually. In the 1990s, almost 70 per cent of
deforested areas were changed to agricultural land, predominantly
under permanent rather than shifting systems. A recent study
using globally comprehensive and consistent satellite data
estimated that the extent of the world’s remaining
closed natural forests (where crown cover is more than 40
per cent) in 1995 was 2 870 million ha, about 21.4 per cent
of the land area of the world.
Locally – Australia
Since European settlement half
Australia's forests have been cleared, so that now only five
percent of the country has
any forest cover at all. Only ten percent of the pre-settlement
old growth forest remains. The loss of southern temperate
woodlands has been extreme. Over 85 percent have been completely
cleared. Between 12 and 15 billion trees have been lost from
the Murray-Darling basin alone. Old growth woodlands are
now extremely rare - less than 100 hectares are left in Victoria,
for example - and the condition of the remaining woodlands
in southern Australia is poor. Unsustainable logging, firewood
removal and over-grazing threaten much of what is left.
Australia's
woodlands are being cleared at the rate of five thousand
square kilometers per year, and our forests logged
at the rate of two thousand square kilometers per year. The
year 2000 saw exports of woodchips from native forests reach
seven million tonnes.
The passage of the Commonwealth Renewable
Energy (Electricity) Act 2000 obliges electricity companies
to produce two percent
of their energy from renewable sources and contains penalties
for failure to comply. Wood will be a less expensive option
than solar or wind-powered generation. In NSW alone, the
Government estimates that up to two million tonnes of wood
could be burned each year. (NSW currently exports around
500,000 tonnes of native forest woodchips per year.)
| Short term steps towards a sustainable
future for our forests and woodlands include: |
- Enacting strict land clearing control legislation
in all states and territories as well as at the commonwealth
level.
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- Implementing a forest industry restructuring
package containing the following elements:
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an accelerated transition towards ecologically sustainable
farm forestry and mixed species plantation production
of timber; |
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the removal of inappropriate subsidies and perverse
incentives for native forest and woodland logging; |
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an ecologically sustainable wood and paper purchasing
policy to be implemented by governments and industry; |
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codes and accreditation
procedures for sustainable plantation production; |
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a forest industry structural
adjustment package to manage industry readjustment and
social change |
- Protecting forest and woodland ecosystems
and species through:
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education and incentives
to protect woodlands on private land; |
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a secure and adequate national
forests and woodlands reserve system; |
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recovery plans for threatened
species in forests and woodlands. |
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| Medium term actions, beyond the next three
years include: |
- Raising landholder and consumer awareness
of the values of forests and woodlands through an ongoing
education program.
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