1. Berger, T.W., Neubauer, C., Glatzel, G.(2002). Factors controlling soil carbon and nitrogen stores in pure stands of Norway spruce (Picea abies) and mixed species stands in Austria.For.Ecol.Manage.159; 3-14. https://doi.org/10.1016/S0378-1127(01)00705-8
2. Bouwman A. F. and leemans, R.(1995). The role of forest soils in the global carbon cycle. In: Mc Fee, W., Kelly, J. M.(eds). Carbon forms and functions in forest soils. Soil science society American, Medison, WI, 503-525. https://doi.org/10.2136/1995.carbonforms.c23
3. Detwiler, R. P.and Hall, C. A. S. (1988). Tropical forests and the global carbon cycle. Science. 239, 42-47 https://doi.org/10.1126/science.239.4835.42
4. Dixon, R. K. and Wisniewski, J. (1995). Global forest system: an uncertain response to atmospheric pollutant and global climate change, water soil pollut. 58 101-110 https://doi.org/10.1007/BF00483692
5. Eswaran, H., Evert Van Den Berg and Paul R. (1993). Organic carbon in soils of the world Soil Sci. Soc. AM. J. 57: 192-194 https://doi.org/10.2136/sssaj1993.03615995005700010034x
6. FAO, (2006). Global Forest Resources Assessment 2005: progress towards sustainable forest management (FRA 2005). FAO Forestry Paper 147. Rome
7. Hui Wang, Shirong Liu , Jingxin Wang , Zuomin Shi, Lihua Lu, Ji Zeng, Angang Ming, Jixin Tang , Haolong Yu (2013). Effects of tree species mixture on soil organic carbon stocks and greenhouse gas fluxes in subtropical plantations in China. Forest Ecology and Management 300 (2013) 4-13 https://doi.org/10.1016/j.foreco.2012.04.005
8. Lal, R. (2005). Forest soil and carbon sequestration. Forest ecology and management. Vol.220, issue 1-3, 242-258 https://doi.org/10.1016/j.foreco.2005.08.015
9. Masson-Delmotte,V. Zhai, P. Pörtner, H.O., Roberts, D., J. Skea, J., Shukla, P.R.. ,Pirani, A W. Moufouma-Okia, Péan, C., Pidcock, R., Connors, S. Matthews, J.B.R., Chen, Y.,. Zhou, X,. Gomis, M. I, Lonnoy, E. T. Maycock, M. Tignor, T. Waterfield (eds.), IPCC (2018): Summary for Policymakers. In: Global warming of 1.5°C. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty ,World Meteorological Organization, Geneva, Switzerland, 32
10. Ravindranath, N.H., Somasshekhar, B.S. and Gadgil, M. (1997). Carbon flow in Indian Forests. Climate change. 35: 297-320 https://doi.org/10.1023/A:1005303405404
11. Schimel, D.S. (1995). Terrestrial ecosystem and carbon cycle. Global change biology 3, 1, 77-91 https://doi.org/10.1111/j.1365-2486.1995.tb00008.x
12. Scott, M. and Lindsey R. (2018). 2017 State of the climate: Atmospheric carbon dioxide, Climate.gov (NOAA)
13. Sundermeier, A. Randall, R. and Lal, (2005). R. Soil carbon sequestration fundamentals Extension fast fact sheet. AEX-510-05
14. Walkley, A. and Black, I. A. (1934). An examination of the Degtijareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil Sci. 34: 29-38 https://doi.org/10.1097/00010694-193401000-00003