东南亚的生物燃料潜力（英文版）_82页_6mb

Summary of Biofuel Potential in Southeast Asia

Core Content

This document explores the potential for bioenergy in Southeast Asia through various approaches, including the sustainable collection of agricultural residues, sustainable intensification of agriculture, reduction of food waste and losses, and the utilization of productive forests. The focus is on lignocellulosic feedstocks, which are considered environmentally, socially, and economically sustainable and do not conflict with food supplies or cause carbon emissions from land use change.

Main Points

1. Biofuel Potential from Agricultural Residues

• Residue Collection: For every tonne of crop produced, a quarter to half of the residue can be sustainably collected, leaving enough to regenerate the soil.
• Global Residue Potential: In 2010, global agricultural residues had an energy content of about 161 EJ. With projected growth in food supply and assuming a 40% conversion efficiency, this could increase to 79-128 EJ by 2050.
• Southeast Asian Countries: Detailed estimates show that the biofuel potential from residues in 2050 would be:
  • Indonesia: 1.43-2.50 EJ (or 570-1002 PJ)
  • Malaysia: 0.08-0.18 EJ (or 30-72 PJ)
  • Philippines: 0.38-0.77 EJ (or 151-308 PJ)
  • Thailand: 0.99-1.63 EJ (or 397-654 PJ)
  • Viet Nam: 0.43-0.94 EJ (or 174-377 PJ)
• Conversion to Biofuel: Assuming 40% efficiency, residues could yield 18-38 EJ of biofuel globally, equivalent to one-fifth to two-fifths of current transport fuel use.
• Southeast Asia Biofuel Displacement: Advanced biofuel from residues could displace the bulk of transport fuel in the Philippines, Thailand, and Vietnam, and about half in Indonesia.

2. Biofuel Potential through Sustainable Intensification of Agriculture

• Yield Growth: Yield per hectare is responsible for 80% of increased food production. Closing the yield gap could free up land for biofuel crops.
• Land Freed: Closing the yield gap could free up 552 Mha globally for biofuel crops, and in Southeast Asia:
  • Indonesia: 4.26 Mha
  • Malaysia: 1.27 Mha
  • Philippines: 6.87 Mha
  • Thailand: 3.45 Mha
  • Viet Nam: 2.91 Mha
• Biomass and Biofuel Potential: If planted with bioenergy crops yielding 150 GJ/ha, the potential for biofuel from this land would be:
  • Indonesia: 255 PJ
  • Malaysia: 76 PJ
  • Philippines: 412 PJ
  • Thailand: 207 PJ
  • Viet Nam: 174 PJ
• Biofuel Share of Transport Fuel: These amounts could displace 14-122% of current transport fuel use in Southeast Asian countries.

3. Biofuel Potential from Land Freed by Reducing Food Waste

• Global Food Waste: One-third of all food is lost or wasted globally, amounting to 1.3 billion tonnes per year.
• Land Freed by Waste Reduction:
  • Indonesia: 13,792 kha
  • Malaysia: 3,608 kha
  • Philippines: 9,944 kha
  • Thailand: 8,306 kha
  • Viet Nam: 8,420 kha
• Biomass and Biofuel Potential:
  • Indonesia: 2,069 PJ
  • Malaysia: 541 PJ
  • Philippines: 1,492 PJ
  • Thailand: 1,246 PJ
  • Viet Nam: 1,263 PJ
• Biofuel Share of Transport Fuel:
  • Indonesia: 114%
  • Malaysia: 91%
  • Philippines: 440%
  • Thailand: 160%
  • Viet Nam: 266%
• Best Practice Reduction: If food waste and losses are reduced to global best practice levels, biofuel potential could be significantly lower, but still substantial:
  • Indonesia: 774 PJ (42% of 2012 transport fuel use)
  • Malaysia: 189 PJ (32%)
  • Philippines: 441 PJ (130%)
  • Thailand: 382 PJ (49%)
  • Viet Nam: 383 PJ (81%)

4. Biofuel Potential from Productive Forests

• Forest Species: Southeast Asia has a variety of productive forest species, including rubber, coconut palm, bamboo, acacia, eucalyptus, pine, and teak.
• Energy Wood Potential:
  • Table S-12: The yearly bioenergy potential from these species is estimated using a standard calculation method.
  • Table S-13: Country-specific energy potential from productive forests is calculated.
  • Table S-14: The share of biofuel from productive forests relative to liquid fuel use in 2012 is also presented.
• Land Use: Forests can be used for both lumber and energy wood. The energy wood share varies by species:
  • Process woods: ~40% of content can be used for energy.
  • Fibrous woods: ~20% of content can be used for energy.
  • Grasses like bamboo: ~15% of content can be used for energy.

5. Energy Security and Policy Options

• Energy Security: Southeast Asia has considerable potential to meet its transport fuel needs with advanced biofuels, particularly if sustainable practices are adopted.
• Policy Recommendations:
  • Residue Collection: Improve logistics and share best practices for cost-effective residue collection.
  • Agricultural Yields: Enhance extension services, adopt agroforestry, and secure land tenure to boost yields.
  • Food Waste Reduction: Improve harvesting, storage, packaging, and transportation infrastructure, along with better labeling and flexible regulations.
  • Forest Utilization: Promote sustainable forestry practices and use of energy wood in biorefineries.

Key Information

• Total Biofuel Potential: If all sustainable feedstocks are utilized, they could supply up to two-fifths of the region's projected fuel needs for transport in 2050.
• Conversion Efficiency: Assuming 40% conversion efficiency for advanced biofuels, the biofuel potential is calculated.
• Regional Focus: The report focuses on Indonesia, Malaysia, the Philippines, Thailand, and Viet Nam, all ASEAN and APEC members.
• Challenges: Biofuel potential is reduced if significant amounts of solid biomass continue to be used for non-transport applications.
• Data Sources: The analysis is based on data from FAO and IRENA, including tables that break down residue, yield, and waste reduction potential by country.

Conclusion

Southeast Asia has substantial potential for advanced biofuels through sustainable collection of agricultural residues, sustainable intensification of agriculture, and reduction of food waste and losses. Productive forests also offer significant energy wood potential. With appropriate policies and technologies, these resources could play a vital role in enhancing energy security and reducing reliance on fossil fuels.