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Avudainayagam, S.
- Organic Carbon Storage by Ailanthus excelsa Plantations
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Indian Forester, Vol 138, No 11 (2012), Pagination: 1041-1046Abstract
This study is related to working out the carbon storage potential of the fast growing species like the Ailanthus excelsa. It is seen that the carbon storage in different tree components, litter and soil increases with the increase in age of the plantation. The carbon concentration in different parts of the tree for all aged plantation followed the decreasing order as stem > ischolar_main > branch > leaf. The carbon content of litter is estimated and it is found that the lowest return is from the youngest and highest return is from the oldest stand and it indicated a direct relationship with age. The carbon content is estimated using two methods, one is by calculating the biomass and carbon content per cent (formula method) and the other by assumption method. The results show that the assumption method leads to an over-estimation of carbon content for the total organic carbon of the same age when compared to the formula method (especially for younger aged plantations). Therefore, it could be suggested that the assumption method should be avoided for younger age plantations and its use must be restricted only to the older plantations.Keywords
Ailanthus, Carbon Sequestration, Above Ground Biomass, Below Ground Biomass
- Carbon Storage Potential of Eucalyptus Tereticornis Plantations
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Affiliations
1 Department of Environmental Sciences, Agriculture College and Research Institute, T. N. A. U., Coimbatore, Tamil Nadu, IN
2 Department of Environmental Sciences, Agriculture College and Research Institute, T. N. A. U., Coimbatore, Tamil Nadu, IN
1 Department of Environmental Sciences, Agriculture College and Research Institute, T. N. A. U., Coimbatore, Tamil Nadu, IN
2 Department of Environmental Sciences, Agriculture College and Research Institute, T. N. A. U., Coimbatore, Tamil Nadu, IN
Source
Indian Forester, Vol 140, No 1 (2014), Pagination: 53-58Abstract
The carbon storage potential of Eucalyptus tereticornis plantations (one to four years old) was estimated using two different methods. The carbon concentration in different parts of the tree for all aged plantation was found in decreasing order: stem > ischolar_main > branch > leaf. Carbon content of litter showed that the lowest return was from the -1 youngest and highest return was from the oldest stand. The carbon content was found to be 38.10 t ha (one year -1 plantation) and 115.88 t ha (four year plantation) when estimated by biomass and carbon content per cent (formula -1 -1 method) and it was found to be 42.66 t ha (one year plantation)and 129.04 t ha (four year plantation)when estimated by the assumption that carbon fractions is fifty per cent of biomass (assumption method). The results showed that the assumption method leads to an over-estimation of carbon content for the total organic carbon of the same age when compared to the formula method (especially for younger aged plantations).Keywords
Eucalyptus, Carbon Storage, Above Ground Biomass, Below Ground Biomass.References
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- Bouwman, A.F. (1990). Exchange of green house gases between terrestrial ecosystems and the atmosphere. In: Soils and the Greenhouse Effect (Bouwman, A.F. Ed.) John Willey and sons, New York, USA, 575 pp.
- Chauhan, S.K., Gupta, N., Ritu, S., Yadav and Chauhan, R. (2009). Biomass and carbon allocation in different parts of agroforestry tree species. Indian Forester,135 (7): 981-993.
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- Eswaran, H., Berg, E.V.D. and Reich, P. (1993). Organic carbon in soils of the world. Soil Science Society of America Journal, 57: 192-194.
- Gifford, R.M. (2000). Carbon content of wood ischolar_mains. Revised analysis and a comparison with woody shoot components. Australian Greenhouse Office, National Carbon Accounting System Technical Report, 7:18
- Gupta, M.K. and Pandey, R. (2008). Soil organic carbon pool under different plantations in some districts of Uttarakhand and Haryana. Ind. J. Forestry, 31 (3): 369-374.
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- Kumar, R., Pandey S. and Pandey, A. (2006). Plant ischolar_mains and carbon sequestration. Current Science,91 (7): 885-890.
- Myers, N. (1990). Tropical forests. In: Global warming, the Greenpeace Report (Leggett, J. Ed.) Oxford: OUP. Pp 372-399.
- Pal, R., Melkania, U. and Dhiman, R.C. (2009). Inter-Clonal variation in carbon pool of Populus deltoides Bartr. Indian Forester, 135 (9): 1209-1216.
- Parthiban, K.T. (1991). Effect of few tree species on soil fertility, microflora, microfauna and enzymes. M.Sc. Thesis, Forest College and Research Institute, Tamil Nadu Agricultural University, Mettupalayam, India.
- Soni, P. (2003). Climate Change and restoration of Tropical Forests. Indian Forester, 129 (7): 865-873.
- Upadhyaya, A.K. and Soni, R.G. (1997). Growth, Biomass production and dry matter distribution of pattern of Eucalyptus camaldulensis grown under irrigated conditions in IGNP area of Rajasthan. Indian Forester,123 (3): 190-195.
- Walkley, A. and Black, T.A. (1934). An examination of the Degtjareff method for determining soil organic matter and proposed modification of the chromic acid titration method. Soil Science, 37: 29-38.
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- Immobilization of Pb and Reduce Uptake in Edible and Non Edible Crops Under Long Term Sewage Irrigated Soil
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1 Department of Soil Sciences and Agriculture Chemistry, Tamil Nadu Agriculture University, Coimbatore (T.N.), IN
1 Department of Soil Sciences and Agriculture Chemistry, Tamil Nadu Agriculture University, Coimbatore (T.N.), IN
Source
An Asian Journal of Soil Science, Vol 5, No 1 (2010), Pagination: 49-54Abstract
To check the transfer of metals in the food chain FeSO4.7H2O and CaSO4 were used to rapidly immobilize the metals in a larger area. In batch experiment, application of FeSO4 @ 5% showed greater decrease in soil pH from 7.54 to 5.55 in half an hour shaking period and consequently water soluble and exchangeable Pb concentrations decreased by 100%. Pot experiment was carried out with two flowers and two leafy vegetables as test crops with FeSO4 @ 1% and 2.5%. The application FeSO4 @ 2.5% decreased the bioavailability of Pb and the performance of Tagetes erecta was superior among the four crops.Keywords
Sewage Irrigation, Chemical Amendments, Immobilization, FeFO4, Pb Accumulations.- Bioavailability of Heavy Metals and Polycyclic Aromatic Hydrocarbon in Long-Term Sewage-Drained Soils of Tamil Nadu
Abstract Views :216 |
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Authors
Veeramani Kathavarayan
1,
S. Avudainayagam
1,
K. Sara Parwin Banu
1,
N. Chandrasekharan
2,
S. Karthikeyan
3,
K. Bhuvaneswari
4,
P. T. Ramesh
1
Affiliations
1 Department of Environmental Science, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
2 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
3 Department of Bioenergy, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
4 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
1 Department of Environmental Science, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
2 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
3 Department of Bioenergy, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
4 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
Source
Current Science, Vol 117, No 3 (2019), Pagination: 448-459Abstract
Heavy metals and organic contaminants are reported in sewage discharged sites. Screening and assessment of their toxic concentration in soils of the discharged sites of major cities in Tamil Nadu, India have been carried out in the present study. The major cities included Coimbatore (Ukkadam; U), Madurai (Avanaiyapuram; A), Tiruchirappalli (Rettamalai; R), Nesapakkam (N) and Koyambedu (K) Chennai Corporation. The total aquaregia-extractable concentrations of cadmium, chromium, lead and nickel were measured and found to be highest in U, followed by A, R, N and K. Their potential bioavailabilities were quantified in the following order: Cd – N > U > K > R > A; Cr – N > A > K > R > U; Pb – N > K > R; U > A; Ni – N > K > R > U > A. Bioavailable Factor was found to be highest for Cd in U (2.9%–83%) followed by Cr in N (1.1%–62.3%) and Ni in (1.70%– 52.7%) N. With regard to organic contamination, the major pesticides belonged to 13 organochlorine, 10 organophosphate and 8 synthetic pyrethroids reported below detectable concentration. Among the 16 US EPA priority poly aromatic hydrocarbon (PAHs) only 15 were detected. However, PAHs were found to be less than the permissible concentration for soils (0.3 mg kg–1) in sewage-contaminated sites. The results show that there is potential risk of transfer of heavy metals to higher trophic level of the food chain.Keywords
Heavy Metals, Health Risk, Polycyclic Aromatic Hydrocarbon, Sewage Contamination.Full Text
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