Biomass Production and Carbon Stock in a Silvi-Horti Based Agroforestry System in Arid Region of Rajasthan

Bilas Singh; G. Singh

doi:10.36808/if/2015/v141i12/85544

Biomass Production and Carbon Stock in a Silvi-Horti Based Agroforestry System in Arid Region of Rajasthan

Authors

Bilas Singh Arid Forest Research Institute, New Pali Road, Jodhpur
G. Singh Arid Forest Research Institute, New Pali Road, Jodhpur

DOI:

https://doi.org/10.36808/if/2015/v141i12/85544

Keywords:

Agroforestry, Arid Region, Soil Carbon Stock, Tree Carbon Content.

Abstract

A study was conducted to compare carbon accumulation in both tree biomass and soil (0-30 cm in depth) in a six year old agri-silvi-horti system grown on a farmer field in arid region of Rajasthan. Silvicultural species were Prosopis cineraria (PC), Ailanthus excelsa (AE) and Colophospermum mopane (CM) along with Zizyphus mauritiana (ZM), Cordia myxa (COM) and Emblica officinalis (EO) horticultural species planted alternate plant to each other. These were intercropped with wheat (Triticum aestivum). In addition, there were controls for each tree species as well as crop alone. Biomass production of horticultural and silvicultural species was higher in agroforestry plots as compared to respective control plot. P. cineraria showed the highest biomass (14.02 kg per tree) and Z. mauritiana tree (2.07 kg per tree) lowest biomass in agroforestry system, whereas biomass was one and half time low in sole tree plot (control). Maximum reduction was in A. excelsa tree. Carbon content (%) was highest in leaf and lowest in roots. The highest carbon content was 45.84% in C. mopane and lowest was 43.61% in A. excelsa trees. Both biomass and soil carbon stock varied (P<0.05) among the horti-silvi combinations. Average carbon stock was highest in P. cineraria based agroforestry than other two silviculture species. It was more in agroforestry than in sole horti- and silvi-species as well as agriculture plots. Our results show that the main carbon sink in horti-silvi is the wooden parts of trees which increased with stand age, whereas the soil carbon pool remained stable.

References

Bambrick A.D., Whalen J.K., Bradley R.L., Cogliastro A., Gordon A.M., Olivier A. and Thevathasan N.V. (2010). Spatial heterogeneity of soil organic carbon in tree-based intercropping systems in Quebec and Ontario, Canada. Agroforest Syst., 79: 343â€“353.

Batjes N.H. (1996). Total carbon and nitrogen in the soils of the world. Eur. J. Soil Sci., 47: 151-163.

Canadell J.G., and Raupach M.R. (2008). Managing forests for climate change mitigation. Science, 320: 1456-1457.

Chauhan S.K., Gupta N., Ritu, Yadav S. and Chauhan R. (2009). Biomass and Carbon allocation in different parts agroforestry tree species. Indian Forester, 135: 981-993.

Chhabra A. and Dadhwal V.K. (2004). Assessment of major pools and fluxes of carbon in Indian forests. Climate Change, 64: 341-360.

Faroda A.S., Joshi D.C. and Balak Ram. (1999). Agro-ecological zones of North-Western hot arid region of India. Central Arid Zone Research Institute, Jodhpur, Rajasthan, India, pp.7.

Goswami S., Verma K.S. and Kaushal R. (2014). Biomass and carbon sequestration in different agroforestry systems of a Western Himalayan watershed. Biological Agriculture & Horticulture, 30: 88-96.

Gupta N., Kukal S.S., Bawa S.S. and Dhaliwal G.S. (2009). Soil organic carbon and aggregation under poplar based agroforestry system in relation to tree age and soil type. Agroforestry Syst., 76: 27â€“35.