Diurnal and Seasonal Variations of CO2 Concentration and Efflux in Cotton Field of Northwestern China

摘要：

Concentration and efflux of CO2 were measured during cotton growing season in northwestern China. This study showed a modest diurnal cycle in soil surface CO2 efflux, especially during June-July when CO2 efflux rate was relatively high. There was a strong seasonality in both CO2 concentration and CO2 efflux. CO2 efflux showed a peak in mid-July whereas CO2 concentration reached the highest prior to early July in the upper 30 cm. For the whole cotton growing season, accumulated CO2 efflux was 3.94 Mg C ha-1.

作者: Zhiguo Li Xiujun Wang Changyan Tian

作者单位: Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences

会议类型: 国际会议

会议名称: The 2nd International Workshop on Carbon Sequestration and Climate Change Mitigation in Agriculture(第二届农业土壤固碳减排与气候变化国际学术研讨会)

会议地点: 北京

会议语种:英文

页码: 48-50

在线出版日期: 2010-06-27（万方平台首次上网日期，不代表论文的发表时间）