Wednesday 23 January 2013

advantages of forest fires

Te sounds and smells of fre bring diferent images to diferent people.
Tat is surprising since fre is one of our greatest tools and one of our
most destructive forces. So what is fre? Is it enemy or friend? Fire in
the wildlands does not have to be a villain. Fire that is low in intensity
and does not grow out of control benefts our wildlands and is actu-
ally vital to the survival of several species.
Cleaning the Forest Floor
Fire removes  low-growing underbrush, cleans  the  forest foor of debris, opens  it up
to  sunlight,  and nourishes  the  soil. Reducing  this  competition  for nutrients  allows
established trees to grow stronger and healthier. History teaches us that hundreds of
years ago  forests had  fewer, yet  larger, healthier  trees. Forests  today have more  trees
than in the past, but they are not as large or healthy. Established trees have to compete
with undergrowth for nutrients and space. Fire clears the weaker trees and debris and
returns health  to  the  forest. Clearing brush  from  the  forest foor with  low  intensity
fames can help prevent large damaging wildfres that spread out of control and com-
pletely destroy forests. Under optimum conditions, when wildfres do start, the result
is a low intensity fre that remains on the ground burning grasses and vegetation, but
causing less damage to trees.

Providing Habitat
Wildlands provide habitat and shelter to forest animals and birds. Fire clears wildlands
of heavy brush, leaving room for new grasses, herbs and regenerated shrubs that pro-
vide food and habitat for many wildlife species. When fre removes a thick stand of
shrubs, the water supply is increased. With fewer plants absorbing water, streams are
fuller, benefting other types of plants and animals.
Killing Disease

Fire kills diseases and  insects that prey on trees and provides valuable nutrients that
enrich the soil. More trees die each year from insect infestation and disease than from
fre. Many forests struggle against diseases such as pitch canker and bark beetle infesta-
tions – pests that destroy the part of the tree that delivers nutrients to the roots, leaves
and needles. Fire kills pests and keeps the forest healthy. Vegetation that is burned by
fre provides a rich source of nutrients that nourish remaining trees.
New Generations

Change is important to a healthy forest. Some species of trees and plants are actually
fre dependent. Tey must have fre every 3-25 years  in order  for  life  to continue.
Some  trees have fre  resistant bark and cones  that  require heat  to open and  release
seeds  for  regeneration. Chaparral  plants,  including manzanita,  chamise  and  scrub
oak, also require intense heat for seed germination. Tese plants actually encourage
fre by having leaves that are covered with fammable resins. Without fre, these trees
and plants would eventually succumb to old age with no new generations to carry on
their legacy.

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