1、JALLOW B. P. Emissions of greenhouse gases from agriculture, land-use change, and forestry in the Gambia Affiliation(s) du ou des auteurs / Author(s) Affiliation(s) Dep. water resources, 7, Marina Parade, Banjul, GAMBIE 2、Burton DL Beauchamp EG 1994 profile nitrous oxide and carbon dioxide concentration in a soil subject to freezing soil sci soc ame j 58:115-122 http://soil.scijournals.org/cgi/reprint/58/1/115 3、Sotomayor D Rice C W 1999 Soil air carbon dioxide and nitrous oxide concentration in profile under tallgrass prairie and cultivation J Enviom qual 28:784-793 http://jeq.scijournals.org/cgi/reprint/28/3/784