Well, maybe not. Or at least, maybe not enough. According to Bamboo Living, some bamboo species sequester up to 12 tons of carbon dioxide per hectare per year. I dropped that number down to 5 because I figured we wouldn't be lucky enough to have the species all the builders want to use absorb that much. Then I pulled in some numbers from the CIA World Factbook to see how much land would be available for this project. Here's what I wound up with:
annual tons CO2 per hectare that bamboo absorbs: 5So we need 2,200,000 square kilometers of bamboo. Where shall we put it? How about the U.S., since it's the world's largest producer of carbon dioxide?
convert to annual metric tonnes CO2/hectare: 4.55
target metric tonnes CO2 per year: 1,000,000,000 tonnes/yr
hectares necessary: 220,000,000 hectares
square km per hectare: 0.01
square km necessary: 2,200,000 km^2
total land area of U.S.: 9,161,923 km^2Oops, looks like it won't fit. Just for comparison, let's look at the total arable land in the world:
total arable land in U.S.: 1,650,062 km^2
total land area of world: 148,940,000 km^2So we'd be looking at a sizable chunk of the world's cropland.
total arable land: 19,823,914 km^2
total permanent cropland: 7,015,074 km^2
That's a lot of carbon dioxide.