7Houghton J T, Callander B A, Vareney S K. Climate Change Intergovemmental Meteorological Organization[M]. Cambridge: Cambridge University Press, 1992.
8IPCC (2006). 2006 IPCC Guidelines for National Greenhouse Gas Inventories Volume 4: Agriculture, Forestry and Other Land Use[R]. Geneva, Switzerland.
9IPCC. Greenhouse Gas Inventory Reference Manual. Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories. Vol. 3[R]. 1996.
10Cole V, Cerri C, Minami K, et al. Agricultural Options for mitigation of greenhouse gas emission. Climate Change [M]. Cambridge, U. K Cambridge University Press, 1995: 745- 771.