http://news.mongabay.com/2012/0514-h...a-borneo.html#

Indigenous people of the Amazon produced rich agricultural soil by adding charcoal, manure, and animal bones to the otherwise nutrient-poor dirt of the world's greatest rainforest. The inputs allowed early indigenous people to farm their terra preta, or dark earth, sustainably in the Amazon. To date such practices are only known from the the Amazon and parts of Africa. But in a recent paper in the open access journal Forests scientists in Indonesian Borneo report on the first evidence of terra preta in Asia.

Read more: http://news.mongabay.com/2012/0514-h...#ixzz200qALWcQ

Charred lands: fertile grounds for sustainable agriculture in Kalimantan?
http://blog.cifor.org/8929/charred-l.../#.T_fYQvVmPPp