Thread
1/n

Australia ranks 6th in the world in the amount of forest area, with about 134 Mha (FAO 2020), after Russia, Brazil, Canada…, the countries where you might think forests really are, not in the dry Australian continent.

Keep reading if interested Image
2/n

Although Australia does have extensive, diverse and beautiful forests, the very large area claimed is because of the decision by the Government to report forest extent based on forests equal or taller than 2 m, while the rest of the countries report on taller than 5 m. Image
3/n

@qinyw_OU @XiangmingXiao @matin_brandt @ciais @pepcanadell ++ have produced a forest map based on radar (PALSAR) and optical (MODIS) data using 5 m height to have an extent more comparable with other countries. Image
4/n

That gives an area of 32 Mha of forests for the year 2010, compared with 149 Mha reported by the Government.

See paper and data links:
bit.ly/3t6vbNv
5/n

There are reasons for the choice of 2 m over 5 m, including perhaps that the FAO forest definition is a Northern Hemisphere view of what a forest should look like. Image
6/6

In the end, definitions need to serve their purpose in the first place (structure, function, biodiversity, resources).

And regardless of the forest definition, even single trees outside of forests play an important role.

Paper:
nature.com/articles/s4159…
And speaking of beautiful forests in Australia, the photo in the first tweet in this thread, here repeated, is from the Atherton Tablelands in Queensland. Image

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Pep Canadell

Pep Canadell Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @pepcanadell

12 Nov 20
THREAD

The Australia State of the Climate 2020 is out, by @CSIRO and @BOM_au

Australia, more than ever before, ground zero on climate change and impacts.

Need to step up on mitigation and adapt to the extent is possible.

bit.ly/32Ejod4
Number of extreme hot days
Increase in the number of days with dangerous fire weather
Read 7 tweets
5 Jul 19
I am disappointed that Science has allowed an abstract of a, otherwise good, paper to say that planting trees is "our most effective climate change solution to date". This is factually wrong and certainly a distraction. 1/2
bit.ly/2LBUbID
Planting trees is certainly an important part of the climate change mitigation portfolio, but are neither cheaper nor easier to implement than other options. Most importantly, it won't fix the climate problem, albeit it should be part of the solution. 2/2
it is also important to recognise that trees come with litter and soils, so a tree-only focus will always report a partial carbon balance of the true effect on climate, eg, more trees in a future warmer Russia and Canada can also have higher emissions from C-rich soils.
Read 6 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!

:(