Allison LE. 1975. Organic carbon. In: BlackCA, Evans DD, White JL, Ensminger LE and Clark FE. (eds.). Methods of soil analysis, part 2, chemical and microbiological properties. American Society of Agronomy, Madison, Pp. 1367-1411.
Angers DA. 1992. Changes in soil aggregation and organic carbon under corn and alfalfa. American Journal of Soil Science, 56: 1244-1249.
Barrios E, Buresh RJ and Sprent JI. 1996. Nitrogen mineralization in density fractions of soil organic matter from maize and legume cropping systems. Soil Bio. Biochem. 28: 1459-1465.
Bremner JM and Mulvaney CS. 1982. Nitrogen-total. In: Page AL, Miller RH and Keeney RR. (eds.). methods of soil analysis, Part 2. 2nd Ed. American Society of Agronomy, Madison, WI, Pp. 595–624.
Cambardella CA and Elliott ET. 1992. Particulate soil organic matter changes across a grassland cultivation sequence. American Journal of Soil Science, 56: 777-783.
Canqui HB, Lal R and Lemus R. 2005. Soil aggregate properties and organic carbon for switch grass and traditional agricultural systems in the Southeastern United States. Journal of Soil Science, 12: 998- 1012.
Caravaca F, Figueroa D, Barea JM, Azcon- Aguilar C, Palenzuela J and Roldan A. 2010. The role of relict vegetation in maintaining physical, chemical, and biological properties in an abandoned stipa-grass agroecosystem. Arid Land Res. Manag. 17(2): 103-111.
Carter MR, Angers DA, Gregorich EG and Bolinder MA. 2003. Characterizing organic matter retention for surface soils in Eastern Canada using density and particle size fraction. Canadian Journal of Soil Science, 83: 11-23.
Chaney K and Swift RS. 1984. The influence of organic matter on aggregate stability in some british soils. Journal of Soil Science, 35: 223-230.
Clement CR and Williams TE. 1967. Leys and soil organic matter II. The accumulation of nitrogen in soils under different leys. Journal of Agricultural Science, 69: 133-138.
Dormaar IF. 1984. Monosacharides in hydrolysates of water-stable aggregate after 67 years of Cropping to Spring Wheat. Plant and Soil, 75: 51-61.
Elliot ET and Cambardella CA. 1991. Physical separation of organic matter. Agriculture, Ecosystems and Environment, 34: 407-419.
Feller C, Albrecht A and Tessier D. 1997. Aggregation and organic matter storage in kaolinitic and smesitic tropical soils, In: stucture and organic matter storage in agricultural soils, Carter MR and Stewart BA. (Eds), CRC press, ISBN: 1-56670-033-7, Boca Raton, fl.
Franzluebbers AJ and SttuedemannGA. 2002. Particulate and nonparticulate farticulate of soil organic carbon under pastures in the Sounthern Piedmont USA. Enviro. Pollut. 116:53-62.
Franzluebbers AJ, Haney RL and Hones FM. 1999. Relationship of chloroform fumigation-incubation to soil organic matter pools. Soil Biol Biochem. 31: 395-405.
Garwood EA, Clement CR and Williams TE. 1972. Leys and soil organic matter III. The accumulation of macro-organic matter in the soil under different swards. Journal of Agricultural Science, 78: 333-341.
Gregorich EG, Carter MR, Angers DA, Moneral CM and Ellert BH. 1994. Towards a minimum data set to assess soil organic matter quality in agricultural soils. Canadian Journal of Soil Science, 74: 367-385.
Handayani IP, Coyne MS and Tokosh RS. 2010. Soil organic matter fractions and aggregate distribution in response to tall fescue stands. Journal of Soil Science, 5: 1-10.
Handayani IP, Coyne MS, Barton C and Workman S. 2008. Soil carbon pools and aggregation following land restoration: Bernheim Forest, Kentucky. Journal of Environ. Monitor. Restoration, 4: 11-28.
Handayani IP, Prawito P and Muktamur Z. 2002. The role of natural-bush fallow in abandoned land during shifting cultivation in Bengkulu II. The role of follow vegetation. Journal of Agricultural Science, 4: 10-17.
Handayani IP. 2004. Soil quality changes following forest clearance in Bengkulu, Sumatra, Indonesia, Biotropia, 22: 1-15.
Hu SDC, Coleman CR, Carroll PF, Hendrix F and Beare MH. 1997. Labile soil carbon pools in subtropical forest and agricultural Ecosystem as influenced by management practices and vegetation types. Agriculture, Ecosys. and Environ. 65: 69-78.
Koutika LS, Hauser S and Henrot J. 2001. Soil organic matter assessment in natural regroeth pueraria phaseoloides and mucuna pruriens fallow. Soil Bio. Biochem. 33: 1095-1101.
Liang BC, McKonkey BG, Schoenau J, Curtin D and Campell CA. 2003. Effects of tillage and crop rotation on the light fraction of organic carbon and carbon mineralization in chermozemic soilsd of Saskatchewan. Canadian J. Soil Sci. 83: 65-72.
Moghimi J. 2005. Introduction some of important range species, suitable for range improvement in Iran, Arvan Press, 669p.
Motamedi J. 2006. The report on rangeland and vegetation cover feasibility studies in the Khanghah-e-Sorkh basin. Faculty of Natural Resources, Iran. UrmiaUniversity.
Oades JM. 1984. Soil organic matter and structural stability mechanisms and implications for management . Plant and Soil, 76: 319-337.
Oedraogo EA, Mando R and Stroosnijder L. 2006. Effect of tillage, organic resources and nitrogen fertilizer on soil carbon dynamics and crop nitrogen uptake in semi-arid West Africa. Soil Tillage Res. 91: 57-67.
Sparling GP. 1992. Ratio of microbial biomass to soil organic carbon as a sensitive indicator of changes in soil organic matter. Aus. J. Soil Res. 30 (2): 195-207.
Tisdall J. 1991. Fungal hyphae and structural stability of soil. Aus. J. of Soil Rese. 29: 729-743.
Tisdall JM and Oades JM. 1982. Organic matter and water-stable aggregates in soils. J. Soil Sci. 33 (2): 141-163.
Tisdall JM and Oades JM. 1980. The management of ryegrass to stabilize aggregates of a red-brown earth. Aus. J. Soil Res. 18 (4): 415-422.