Great information from greenopedia
about why Bamboo is a sustainable option.
From the site:
There are many species of bamboo, and they are among the world’s
fastest-growing plants. If the soil and climate are right, some bamboos
can grow up to 39 inches (100 cm) or more in a single day. Bamboo
reaches its full height and girth within three to four months, and
within three to seven years, the stalk hardens enough for use in
construction. One hectare of land can yield up to 60 tons of bamboo.
Trees, by contrast, can take decades to reach their full size, and yield
only 20 tons per hectare.
Bamboo grows in many climates and is native to Asia, sub-Saharan
Africa, Australia, and the Americas. Because it is a grass, its
regeneration does not require replanting.
Bamboo requires no pesticides, irrigation, or fertilizers, so organic
bamboo is easy to find. Bamboo also absorbs more than twice the carbon dioxide
than trees do and generates up to 35 percent more oxygen, making bamboo
cultivation increasingly important due to global deforestation. Bamboo
is effective in preventing soil erosion, uses less water than trees,
keeps water in watersheds, and helps lower water pollution due to its high consumption of nitrogen and tendency to absorb pollutants like heavy metals.
Bamboo plants are hypoallergenic, and naturally kill germs and bacteria.