| DNDC模型在长江三角洲农田生态系统的CH4和N2O排放量估算中的应用 |
| 摘要点击 2545 全文点击 2153 投稿时间：2000-04-15 |
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| 中文关键词 长江三角洲 生物地球化学模型 CH4 N2O |
| 英文关键词 Yangtze River Delta biogeochemical model methane nitrous oxide |
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| 中文摘要 |
| 长江三角洲是我国农业发达地区之一,其农业生产所排放的CH4和N2O,早已引起了研究者的重视.本研究在分析总结现有的野外观测结果的基础上,验证了估算区域痕量气体排放量的生物地球化学模型DNDC,估算出长江三角洲地区的CH4和N2O排放量分别为1.69(1.29～2.09)Tg·a-1和0.019(0.014～0.024)Tg·a-1,分别占全国农田CH4和N2O排放量的16.7%和6.1%. |
| 英文摘要 |
| It was paid attention that CH4 and N2O emission from agricultural soil in Yangtze River Delta where there is most advanced agricultural region in China. In this paper, a regional-scale biogeochemical model DNDC was validated on available field measurement. Then it was used to estimate CH4 and N2O emission in Yangtze River Delta to be 1.69 (1.29～2.09) Tg·a-1 and 0.019 ( 0.014～0.024) Tg·a-1 , repectively. They are about 16.7% and 6.1% of the national total CH44 and N2O emissions from agricultural ecosystems, respectively. |
