Natural Climate Changes In Australia

The records of bushfires in Australia have been recorded all thought history and is associated with the natural climate changes. Records show that there was an increase of frequency around 38,000 years ago, this is believed to be related to human activity but another spike also occurred in 1788 which is associate with the european settlement in Australia according to Kershaw et al published in 2002. At the moment it is estimated 5% of Australia’s surface is burned each year which consumes 10% of “ primary productivity of Australia” says Pittock in the Australian guide to the science and potential impacts. Australian Greenhouse Gas Office, Commonwealth of Australia released in 2003.

This proves natural phenomenon prevalent in Australia but the real …show more content…
When plants absorbs carbon dioxide which is make up of 1 carbon atom covalently double bonded with 2 oxygen atoms it fixated it as carbon in the body of the plant, in tern when plants fixate more carbon especially in woody materials it created more dense fuel for fires. When this occurs the plant use the extra carbon it becomes even more prone to becoming fire fuel once it falls of the tree and collects beneath.
This means basically that when there is increased amount of carbon dioxide when it is absorbed into the biosphere there is an increase in fuel. There is also evidence suggesting that there is many factors of this occurring such as change in annual rainfall, temperatures changing and there is even evidence that planet earth’s biosphere cannot keep up with the human emission but sucking up more carbon dioxide ever before which in tern means plants are absorbing it more than ever. Therefore this proves that the elevated levels of gas can be linked to the increase of dry fuel, this however does not directly lead to more fires occurring in Australia but it does mean when fires occur especially in dry seasons that there is more fuel to