Abstract
Abstract Industrialization of bio-energy relies on the supply of resources on a large scale. The theoretical biomass resources could reach 2.61–3.51 billion tce (tons of coal equivalent)/a in China, while the available feedstock is about 440–640 million tce/a, however, among this only 1.5–2.5% has been transferred into energy at present. Marginal land utilization has great prospects of supplying bio-energy resources in China, with co-benefits, such as carbon sequestration, water/soil conservation, and wind erosion protection. There is a large area of marginal land in China, especially in northern China, including about 263 million ha of desertification land, 173 million ha of sand-land, and 17 million ha of salinizatin land. The plant species suitable to be grown in marginal lands, including some species in Salix , Hippophae , Tamarix , Caragana , and Prunus is also abundant Biomass feedstock in marginal lands would be 100 million tce/a in 2020, and 200 million tce/a in 2050. As a result, a win–win situation of eco-society and bio-energy development could be realized, with an expected 4–5% reduction of total CO 2 emission in China in 2020–2050. Although much progress has been made in the field of bio-energy research in China, yet significant efforts should be taken in the future to fulfill large-scale industrialization of bio-energy.
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