How much of the worlds forests can be destroyed before a serious impact on air quality can be observed?

Question

I was wondering what percentage of the worlds forests can be destroyed before it has a serious impact on global air quality(a significant decrease in oxygen levels and a significant increase in carbon dioxide levels)? Obviously algae produces most of the worlds oxygen and absorbs the most carbon dioxide but would this be enough to keep global air quality at present levels without any remaining forests?

P.S if you have a source include that too.

Answer 1

YOU DON'T THINK IT'S ALREADY BEEN IMPACTED?

Answer 2

99% of the world's forests are already gone.  Of course there's been an imapct.  And we are cutting down the rest at an alarming rate.  What a sad, short-sighted species we are.

Answer 3

Unfortunately it is all ready a reality with so much of the forests all ready being gone and with all the pollutions that is being caused by humanity, however I do still have hope for the future.

I have lots of info that I think you will find quite helpful and enlightening:

http://ecowellness.multiply.com/  for excellent inspirational info within my blog to help not only our world and its creatures, but to also open peoples hearts and minds to many amazing wonders that life has to offer.  I also have lots of info in my blog to help fuel peoples imaginations to many possibilities that can be found only in the minds eye.

Along with lots of environmental info, amazing environmental pictures and videos (These videos show the beauty of this world and what life can be like if people take the time to appreciate life’s true beauty).

Let us all strive for a greener/brighter future by helping to create a solid foundation for future generations to build upon, so we can hand them a beautiful world, filled with never ending awe and wonders!!

Where peoples differences and uniqueness are accepted, where we all live as one, helping one another so that we can all play our own mysteriously beautiful melodies in the never ending, awe inspiring, song of life :-)

I truly have faith in humanity and believe that someday our lives and the world in which we live will truly be transformed for the better.