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cje ›› 2012, Vol. 31 ›› Issue (11): 2859-2864.

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Potential of bioenergy production from garden wastes in West Lake scenic spots of Hangzhou, China.

SHI Yan1, ZHENG Nan1, TANG Yu-li2, FAN Li-kun2, GUO Ke-jian1, FAN Xing1, GE Ying1, CHANG Jie1**   

  1. (1College of Life Sciences, Zhejiang University, Hangzhou 310058, China; 2 Qianjiang Administration Division, West Lake Cultural Relic Bureau, Hangzhou 310008, China)
  • Online:2012-11-10 Published:2012-11-10

Abstract: The development of bioenergy may provide a solution to achieve the reduction targets for scenic spot emissions. This paper provides a synthesis of questionnaire survey and experimental data to assess the potential of garden waste biomass for renewable energy production in West Lake of Hangzhou. Our results showed that the waste dry biomass from greenspace reaches 4.60±3.12 t·hm-2·a-1. The garden waste dry biomass from greenspace in the road area was 5.96 t·hm-2·a-1 which was higher than the other area. The main species of the garden wastes were Cinnamomum camphora, Osmanthus fragrans and Rhododendron simsii. The total amount of dry biomass from scenic wastes was estimated at 3402 t·a-1. The total potential biofuel produced as scenic waste biomass was estimated at 6.3×1010 kJ·a-1, which accounts for 40% of the energy consumption for the West Lake. The wood pellets production bioenergy system was the best way for the garden waste biofinery. The emission reduction of using garden waste for energy production to alternative fossil fuels would be 4177 t CO2 per year. The use of garden wastes in scenic area for energy production could be a winwin approach for the reduction of environment stress and the increase in the energy supply.  

Key words: footprint family, ecological footprint, carbon footprint, water footprint, resource and environment pressure.