6LASHOF D A, AHUJA D. Relative Contributions of Greenhouse Gas Emissions to the Global Warming [J]. Nature, 1990, 344: 529-531.
7ZHENG X, HAN S, HUANG Y, et al. Re Quantifying the Emission Factors Based on Field Measurements and Estima ring the Direct N20 Emission from Chinese Croplands [J]. Global Biogeochemical Cycles, 2004, 18(2), GB2018, doi 10. 1029/2003GB002167.
8IPCC. Climate Change 2007: Changes in Atmospheric Constituents and in Radiative Forcing [R/OL] [2009 -11-11]. http: //www. ipcc. ch/pdf/assessment-report/ar4/wgl/ar4-wgl-ehapter2, pdf.
9LEE J, HOPMANS J W, VAN KESSEL C, et al. Tillage and Seasonal Emissions of CO2 , N20 and NO Across a Seed Bed and at the Field Scale in a Mediterranean Climate[J]. Agriculture, Ecosystems Environment, 2009, 129 (4): 378-390.
10JANTALIA C P, DOS SANTOS H P, URQUIAGA S, et al. Fluxes of Nitrous Oxide from Soil Under Different Crop Rotations and Tillage Systems in the South of Brazil[J]. Nutrient Cycling in Agro-Ecosystems, 2008, 82 (2): 161-173.
