PDF(Pubmed)
Abstract：
Bioenergy development is critical for achieving carbon neutrality. Biomass residues from agriculture, forest, and livestock manure provide substantial bioenergy resources in China, but their availability, climate, and economic impacts have not been evaluated systematically. Here we assess biomass sustainability, bioenergy potential, greenhouse gas emissions (GHG) reduction, and cost-effectiveness using an integrated data-modeling approach. Nationally, only 27% of biomass can be used for sustainable bioenergy production, but can contribute to significant climate change mitigation with optimized regional utilization. The annual GHG reduction can reach 1.0 Gt CO2e for bioenergy, or 1.4 Gt CO2e for bioenergy with carbon capture and storage (BECCS), which is comparable to total terrestrial ecosystem carbon sinks in China. The abatement cost varies regionally but is lower than many other carbon removal technologies. Our findings reveal region-specific bioenergy pathways that contribute to carbon neutrality, and encourage future assessments to explore factors including technological advances and carbon markets.
摘要：
生物能源开发对于实现碳中和至关重要。来自农业的生物质残留物，森林,和牲畜粪便在中国提供了大量的生物能源资源，但是他们的可用性，气候,经济影响尚未得到系统评估。在这里，我们评估生物质的可持续性，生物能源潜力，减少温室气体排放（GHG），和使用集成数据建模方法的成本效益。在全国范围内,只有27%的生物质可以用于可持续的生物能源生产，但可以通过优化区域利用来显著缓解气候变化。生物能源的年度温室气体减排量可达到1.0GtCO2e，或1.4GtCO2e用于具有碳捕获和储存的生物能源(BECCS)，与中国陆地生态系统碳汇总量相当。减排成本因地区而异，但低于许多其他碳去除技术。我们的发现揭示了有助于碳中和的特定区域生物能源途径，并鼓励未来评估，以探索包括技术进步和碳市场在内的因素。
