Global estimates of potential mitigation of greenhouse gas emissions by agriculture
Global estimates of potential mitigation of greenhouse gas emissions by agriculture
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DOI：
10.1023/a:1009731711346
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发表时间：
1997-01-01
影响因子：
3.1
通讯作者：
Zhao, Q
中科院分区：
文献类型：
--
作者：
Cole, CV;Duxbury, J;Zhao, Q
审查了减少农业部门二氧化碳、甲烷和一氧化二氮净排放量的技术，以估计全球减少这些具有辐射活性的温室气体的潜力。我们估计，农业部门的潜在减少辐射强迫的范围从1.15-3.3千兆吨碳当量每年。在总的潜在减排量中，约32%可能来自二氧化碳排放量的减少，42%的碳抵消来自15%的现有农田上的生物燃料生产，16%来自甲烷排放量的减少，10%来自一氧化二氮排放量的减少。农业在管理做法和可能采用缓解做法的比率方面存在很大的区域差异。缓解备选办法的可接受性将取决于可持续生产将在多大程度上实现或维持，以及农民将在多大程度上获得利益。现在采用诸如免耕耕作和战略性施肥和施肥时机等技术，并非出于对气候变化问题的关切。
Technologies to reduce net emissions of carbon dioxide, methane and nitrous oxide within the agriculture sector were reviewed to estimate the global potential for mitigation of these radiatively active greenhouse gases. Our estimates of the potential reduction of radiative forcing by the agricultural sector range from 1.15-3.3 Gt C equivalents per year. Of the total potential reduction, approximately 32% could result from reduction in CO2 emissions, 42% of carbon offsets by biofuel production on 15% of existing croplands, 16% from reduced CH4 emissions and 10% from reduced emissions of N2O. Agriculture encompasses large regional differences in management practices and rates of potential adoption of mitigation practices. Acceptability of mitigation options will depend on the extent to which sustainable production will be achieved or maintained and benefits will accrue to farmers. Technologies such as no-till farming and strategic fertilizer placement and timing are now being adopted for reasons other than concern for climate change issues.