Bioenergy is an important energy source for Tibetans. To compensate for the lack of a comparative study on household bioenergy consumption and CO2 emissions among farming region, farming-pastoral region, pastoral region, and forest edge zones in Tibetan area, the authors conducted the comparative study through field investigation, literature review and data analysis. The study results reveal that: (1)Bioenergy consumption show regularity from high to low in forest edge zones, pastoral region, farming-pastoral region and farming region, respectively, but the CO2 emissions change from high to low in forest edge zones, pastoral region, farming region, and farming-pastoral region, respectively in Tibetan area; (2)Remote geographic locations and traditional nomadic system restricts Tibetan pastoral region from use of diversified energy, resulting in higher bioenergy consumption and CO2 emissions; (3)The energy efficiency could be potentially increased by improving energy structures and by using durable, low cost and easy to carry clean energy facilities. (C) 2014 Elsevier Ltd. All rights reserved.