Importance of soil cover box area for the determination of N2O emissions from arable soils
Importance of soil cover box area for the determination of N2O emissions from arable soils
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DOI：
10.1007/bf00012052
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发表时间：
1996-04-01
期刊：
影响因子：
4.9
通讯作者：
Heinemeyer, O
中科院分区：
文献类型：
--
作者：
Kaiser, EA;Munch, JC;Heinemeyer, O
采用5种不同面积的土壤覆盖箱系统，对4种耕地土壤的N2 O排放进行了测定。系统的覆盖面积范围为78至576000 cm（2）。观测到的N2 O排放速率近似对数正态分布。N2 O排放速率变化的最大影响可以归因于因子采样日期/时间。不同的土壤覆盖箱系统进行了评估，通过比较测量的平均N2 O释放，其时间过程和空间变化。随着土壤覆盖箱半径的增大，N2 O排放速率的空间变异系数呈递减趋势。
Five soil cover box systems varying in area were used to measure the N2O emissions from four arable soils. The covered area of the systems ranged from 78 to 576000 cm(2). The observed N2O emission rates were approximately log-normal distributed. The greatest influence of variation of N2O emission rates could be attributed to the factor sampling date/time.The different soil cover box systems were assessed by comparing measured mean N2O releases, their time courses and spatial variation. The spatial coefficient of variation of N2O emission rates decreased logarithmically with an increasing radius of the soil cover box system used.