Killing trees takes CO2 out of the atmosphere? I think you've got this backwards.
77% of tree usage in the US is for timber and pulpwood. Fast-growing species are planted and harvested over a 10-20 year cycle so that as each section is cut down and replanted, another section is maturing. It's both sustainable business and an effective CO2 sink.
If you want a citation for growing trees for timber and pulp as an effective CO2 sink, the citation is right in the grandfather post (an international climate change study by the IPCC including researchers from over a dozen countries, how much more authoritative can we get?), or just look up the paper and timber industries on wikipedia.