摘要
【目的】生物质炭因其碳封存与土壤改良功能,被认为是一种可行的保产减排措施。对生物质炭的环境与经济效益进行研究,为实现农业绿色转型、促进农田可持续发展和温室气体减排提供科学依据。【方法】整合中国稻田系统的多源数据,构建混合效应模型,结合Meta分析评估生物质炭对温室气体排放、作物产量和固碳能力的影响,并且开展亚组分析,展示了其他变量对生物质炭效应的影响。同时,基于净环境经济效益,纳入了作物产量收益、环境效益、农业成本和环境损耗,系统量化了生物质炭投入的环境经济效益。【结果】生物质炭施用可提高12.8%的作物产量与30.5%的土壤固碳速率,并提升净环境经济效益值,但对甲烷和氧化亚氮排放的影响不显著。进一步分析表明:不同生物质炭种类和施肥管理对其效应具有重要调控作用。【结论】在稻田种植中添加生物质炭不仅能通过改善土壤固碳能力间接促进温室气体减排,而且也显著提高了净环境经济效益。
[Objective]Biochar is considered a feasible measure for maintaining production and reducing emissions due to its carbon sequestration and soil improvement functions.Research on the environmental and economic benefits of biochar,providing scientific basis for achieving green transformation of agriculture,promoting sustainable development of farmland,and reducing greenhouse gas emissions.[Method]Integrating multi-source data from China’s rice paddy system,constructing a mixed-effects model,and combining meta-analysis to evaluate the impact of biochar on greenhouse gas emissions,crop yield,and carbon sequestration capacity.Subgroup analysis was also conducted to demonstrate the influence of other variables on the biochar effect.And based on the net environmental and economic benefits(NEEB),the environmental benefits of biochar input were systematically quantified by incorporating crop yield benefits,environmental benefits,agricultural costs,and environmental losses.[Result]Biochar increased crop yield by 12.8%and soil carbon sequestration by 30.5%,enhancing NEEB.CH4/N2O emissions showed no significant changes.Effects varied with biochar type and fertilization practices.[Conclusion]Biochar application enhances soil carbon sequestration and NEEB,supporting sustainable rice cultivation.
作者
程术希
李文佑嘉
何勇
蒋茜静
CHENG Shuxi;LI Wenyoujia;HE Yong;JIANG Qianjing(Office of Scitech Research,Zhejiang University,Hangzhou 310058,Zhejiang,China;College of Biosystems Engineering and Food Science,Zhejiang University,Hangzhou 310058,Zhejiang,China)
出处
《浙江农林大学学报》
北大核心
2025年第4期745-753,共9页
Journal of Zhejiang A&F University
基金
浙江省尖兵计划重点研发项目(2022C02014)。
关键词
温室气体
净环境经济效益
生物质炭
Meta分析
成本效益
农业绿色转型
greenhouse gases
net environmental and economic benefits(NEEB)
biochar
meta-analysis
cost-benefit analysis
agricultural green transformation
