IMPORTANCE OF SOIL COVER BOX AREA FOR THE DETERMINATION OF N2O EMISSIONS FROM ARABLE SOILS

摘要

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.